!Comment the following out to turn off aerosol-radiation !feedback between MOSAIC and GSFCSW. wig, 21-Feb-2005 MODULE module_ra_gsfcsw REAL, PARAMETER, PRIVATE :: thresh=1.e-9 REAL, SAVE :: center_lat ! Assign co2 and trace gases amount (units are parts/part by volumn) REAL, PARAMETER, PRIVATE :: co2 = 300.e-6 CONTAINS SUBROUTINE GSFCSWRAD(rthraten,gsw,xlat,xlong & ,dz8w,rho_phy & ,alb,t3d,qv3d,qc3d,qr3d & ,qi3d,qs3d,qg3d,qndrop3d & ,p3d,p8w3d,pi3d,cldfra3d,rswtoa & ,gmt,cp,g,julday,xtime,declin,solcon & ,radfrq,degrad,taucldi,taucldc,warm_rain & ,tauaer300,tauaer400,tauaer600,tauaer999 & ! jcb ,gaer300,gaer400,gaer600,gaer999 & ! jcb ,waer300,waer400,waer600,waer999 & ! jcb ,aer_ra_feedback & ,f_qv,f_qc,f_qr,f_qi,f_qs,f_qg,f_qndrop & ,ids,ide, jds,jde, kds,kde & ,ims,ime, jms,jme, kms,kme & ,its,ite, jts,jte, kts,kte ) !------------------------------------------------------------------ IMPLICIT NONE !------------------------------------------------------------------ INTEGER, PARAMETER :: np = 75 INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte LOGICAL, INTENT(IN ) :: warm_rain INTEGER, INTENT(IN ) :: JULDAY REAL, INTENT(IN ) :: RADFRQ,DEGRAD, & XTIME,DECLIN,SOLCON ! REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), & INTENT(IN ) :: P3D, & P8W3D, & pi3D, & T3D, & dz8w, & rho_phy, & CLDFRA3D REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), & INTENT(INOUT) :: RTHRATEN REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), & OPTIONAL, & INTENT(INOUT) :: taucldi, & taucldc ! REAL, DIMENSION( ims:ime, jms:jme ), & INTENT(IN ) :: XLAT, & XLONG, & ALB ! REAL, DIMENSION( ims:ime, jms:jme ), & INTENT(INOUT) :: GSW, & RSWTOA ! REAL, INTENT(IN ) :: GMT,CP,G ! ! ! Optional ! REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), OPTIONAL , & INTENT(IN ) :: tauaer300,tauaer400,tauaer600,tauaer999, & ! jcb gaer300,gaer400,gaer600,gaer999, & ! jcb waer300,waer400,waer600,waer999 ! jcb INTEGER, INTENT(IN ), OPTIONAL :: aer_ra_feedback REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), & OPTIONAL, & INTENT(IN ) :: & QV3D, & QC3D, & QR3D, & QI3D, & QS3D, & QG3D, & QNDROP3D LOGICAL, OPTIONAL, INTENT(IN ) :: & F_QV,F_QC,F_QR,F_QI,F_QS,F_QG, & F_QNDROP ! LOCAL VARS REAL, DIMENSION( its:ite ) :: & ts, & cosz, & fp, & rsuvbm, & rsuvdf, & rsirbm, & rsirdf, & p400, & p700 INTEGER, DIMENSION( its:ite ) :: & ict, & icb REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: taucld REAL, DIMENSION( its:ite, kts-1:kte+1 ) :: flx, & flxd ! REAL, DIMENSION( its:ite, kts-1:kte ) :: O3 ! REAL, DIMENSION( its:ite, kts-1:kte, 11 ) :: & taual, & ssaal, & asyal REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: & reff, & cwc REAL, DIMENSION( its: ite, kts-1:kte+1 ) :: & P8W2D REAL, DIMENSION( its: ite, kts-1:kte ) :: & TTEN2D, & qndrop2d, & SH2D, & P2D, & T2D, & fcld2D REAL, DIMENSION( np, 5 ) :: pres, & ozone REAL, DIMENSION( np ) :: p LOGICAL :: cldwater,overcast, predicate ! INTEGER :: i,j,K,NK,ib,kk,mix,mkx ! iprof = 1 : mid-latitude summer profile ! = 2 : mid-latitude winter profile ! = 3 : sub-arctic summer profile ! = 4 : sub-arctic winter profile ! = 5 : tropical profile ! INTEGER :: iprof, & is_summer, & ie_summer, & lattmp ! REAL :: XLAT0,XLONG0 REAL :: fac,latrmp REAL :: xt24,tloctm,hrang,xxlat real, dimension(11) :: midbands ! jcb data midbands/.2,.235,.27,.2875,.3025,.305,.3625,.55,1.92,1.745,6.135/ ! jcb real :: ang,slope ! jcb character(len=200) :: msg !wig real pi, third, relconst, lwpmin, rhoh2o ! !-------------------------------------------------------------------------------- ! data set 1 ! mid-latitude summer (75 levels) : p(mb) o3(g/g) ! surface temp = 294.0 ! data (pres(i,1),i=1,np)/ & 0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, & 0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, & 0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, & 0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, & 0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, & 4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, & 31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, & 157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, & 299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, & 442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, & 585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, & 727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, & 870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, & 1013.0000/ ! data (ozone(i,1),i=1,np)/ & 0.1793E-06, 0.2228E-06, 0.2665E-06, 0.3104E-06, 0.3545E-06, & 0.3989E-06, 0.4435E-06, 0.4883E-06, 0.5333E-06, 0.5786E-06, & 0.6241E-06, 0.6698E-06, 0.7157E-06, 0.7622E-06, 0.8557E-06, & 0.1150E-05, 0.1462E-05, 0.1793E-05, 0.2143E-05, 0.2512E-05, & 0.2902E-05, 0.3313E-05, 0.4016E-05, 0.5193E-05, 0.6698E-05, & 0.8483E-05, 0.9378E-05, 0.9792E-05, 0.1002E-04, 0.1014E-04, & 0.9312E-05, 0.7834E-05, 0.6448E-05, 0.5159E-05, 0.3390E-05, & 0.1937E-05, 0.1205E-05, 0.8778E-06, 0.6935E-06, 0.5112E-06, & 0.3877E-06, 0.3262E-06, 0.2770E-06, 0.2266E-06, 0.2020E-06, & 0.1845E-06, 0.1679E-06, 0.1519E-06, 0.1415E-06, 0.1317E-06, & 0.1225E-06, 0.1137E-06, 0.1055E-06, 0.1001E-06, 0.9487E-07, & 0.9016E-07, 0.8641E-07, 0.8276E-07, 0.7930E-07, 0.7635E-07, & 0.7347E-07, 0.7065E-07, 0.6821E-07, 0.6593E-07, 0.6368E-07, & 0.6148E-07, 0.5998E-07, 0.5859E-07, 0.5720E-07, 0.5582E-07, & 0.5457E-07, 0.5339E-07, 0.5224E-07, 0.5110E-07, 0.4999E-07/ !-------------------------------------------------------------------------------- ! data set 2 ! mid-latitude winter (75 levels) : p(mb) o3(g/g) ! surface temp = 272.2 ! data (pres(i,2),i=1,np)/ & 0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, & 0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, & 0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, & 0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, & 0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, & 4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, & 31.5105, 44.2001, 62.0000, 85.9000, 109.8000, 133.7000, & 157.6000, 181.5000, 205.4000, 229.3000, 253.2000, 277.1000, & 301.0000, 324.9000, 348.8000, 372.7000, 396.6000, 420.5000, & 444.4000, 468.3000, 492.2000, 516.1000, 540.0000, 563.9000, & 587.8000, 611.7000, 635.6000, 659.5000, 683.4000, 707.3000, & 731.2000, 755.1000, 779.0000, 802.9000, 826.8000, 850.7000, & 874.6000, 898.5000, 922.4000, 946.3000, 970.2000, 994.1000, & 1018.0000/ ! data (ozone(i,2),i=1,np)/ & 0.2353E-06, 0.3054E-06, 0.3771E-06, 0.4498E-06, 0.5236E-06, & 0.5984E-06, 0.6742E-06, 0.7511E-06, 0.8290E-06, 0.9080E-06, & 0.9881E-06, 0.1069E-05, 0.1152E-05, 0.1319E-05, 0.1725E-05, & 0.2145E-05, 0.2581E-05, 0.3031E-05, 0.3497E-05, 0.3980E-05, & 0.4478E-05, 0.5300E-05, 0.6725E-05, 0.8415E-05, 0.1035E-04, & 0.1141E-04, 0.1155E-04, 0.1143E-04, 0.1093E-04, 0.1060E-04, & 0.9720E-05, 0.8849E-05, 0.7424E-05, 0.6023E-05, 0.4310E-05, & 0.2820E-05, 0.1990E-05, 0.1518E-05, 0.1206E-05, 0.9370E-06, & 0.7177E-06, 0.5450E-06, 0.4131E-06, 0.3277E-06, 0.2563E-06, & 0.2120E-06, 0.1711E-06, 0.1524E-06, 0.1344E-06, 0.1199E-06, & 0.1066E-06, 0.9516E-07, 0.8858E-07, 0.8219E-07, 0.7598E-07, & 0.6992E-07, 0.6403E-07, 0.5887E-07, 0.5712E-07, 0.5540E-07, & 0.5370E-07, 0.5214E-07, 0.5069E-07, 0.4926E-07, 0.4785E-07, & 0.4713E-07, 0.4694E-07, 0.4676E-07, 0.4658E-07, 0.4641E-07, & 0.4634E-07, 0.4627E-07, 0.4619E-07, 0.4612E-07, 0.4605E-07/ !-------------------------------------------------------------------------------- ! data set 3 ! sub-arctic summer (75 levels) : p(mb) o3(g/g) ! surface temp = 287.0 ! data (pres(i,3),i=1,np)/ & 0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, & 0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, & 0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, & 0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, & 0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, & 4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, & 31.5105, 44.2001, 62.0000, 85.7000, 109.4000, 133.1000, & 156.8000, 180.5000, 204.2000, 227.9000, 251.6000, 275.3000, & 299.0000, 322.7000, 346.4000, 370.1000, 393.8000, 417.5000, & 441.2000, 464.9000, 488.6000, 512.3000, 536.0000, 559.7000, & 583.4000, 607.1000, 630.8000, 654.5000, 678.2000, 701.9000, & 725.6000, 749.3000, 773.0000, 796.7000, 820.4000, 844.1000, & 867.8000, 891.5000, 915.2000, 938.9000, 962.6000, 986.3000, & 1010.0000/ ! data (ozone(i,3),i=1,np)/ & 0.1728E-06, 0.2131E-06, 0.2537E-06, 0.2944E-06, 0.3353E-06, & 0.3764E-06, 0.4176E-06, 0.4590E-06, 0.5006E-06, 0.5423E-06, & 0.5842E-06, 0.6263E-06, 0.6685E-06, 0.7112E-06, 0.7631E-06, & 0.1040E-05, 0.1340E-05, 0.1660E-05, 0.2001E-05, 0.2362E-05, & 0.2746E-05, 0.3153E-05, 0.3762E-05, 0.4988E-05, 0.6518E-05, & 0.8352E-05, 0.9328E-05, 0.9731E-05, 0.8985E-05, 0.7632E-05, & 0.6814E-05, 0.6384E-05, 0.5718E-05, 0.4728E-05, 0.4136E-05, & 0.3033E-05, 0.2000E-05, 0.1486E-05, 0.1121E-05, 0.8680E-06, & 0.6474E-06, 0.5164E-06, 0.3921E-06, 0.2996E-06, 0.2562E-06, & 0.2139E-06, 0.1723E-06, 0.1460E-06, 0.1360E-06, 0.1267E-06, & 0.1189E-06, 0.1114E-06, 0.1040E-06, 0.9678E-07, 0.8969E-07, & 0.8468E-07, 0.8025E-07, 0.7590E-07, 0.7250E-07, 0.6969E-07, & 0.6694E-07, 0.6429E-07, 0.6208E-07, 0.5991E-07, 0.5778E-07, & 0.5575E-07, 0.5403E-07, 0.5233E-07, 0.5067E-07, 0.4904E-07, & 0.4721E-07, 0.4535E-07, 0.4353E-07, 0.4173E-07, 0.3997E-07/ !-------------------------------------------------------------------------------- ! data set 3 ! sub-arctic winter (75 levels) : p(mb) o3(g/g) ! surface temp = 257.1 ! data (pres(i,4),i=1,np)/ & 0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, & 0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, & 0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, & 0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, & 0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, & 4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, & 31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, & 157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, & 299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, & 442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, & 585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, & 727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, & 870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, & 1013.0000/ ! data (ozone(i,4),i=1,np)/ & 0.2683E-06, 0.3562E-06, 0.4464E-06, 0.5387E-06, 0.6333E-06, & 0.7301E-06, 0.8291E-06, 0.9306E-06, 0.1034E-05, 0.1140E-05, & 0.1249E-05, 0.1360E-05, 0.1474E-05, 0.1855E-05, 0.2357E-05, & 0.2866E-05, 0.3383E-05, 0.3906E-05, 0.4437E-05, 0.4975E-05, & 0.5513E-05, 0.6815E-05, 0.8157E-05, 0.1008E-04, 0.1200E-04, & 0.1242E-04, 0.1250E-04, 0.1157E-04, 0.1010E-04, 0.9063E-05, & 0.8836E-05, 0.8632E-05, 0.8391E-05, 0.7224E-05, 0.6054E-05, & 0.4503E-05, 0.3204E-05, 0.2278E-05, 0.1833E-05, 0.1433E-05, & 0.9996E-06, 0.7440E-06, 0.5471E-06, 0.3944E-06, 0.2852E-06, & 0.1977E-06, 0.1559E-06, 0.1333E-06, 0.1126E-06, 0.9441E-07, & 0.7678E-07, 0.7054E-07, 0.6684E-07, 0.6323E-07, 0.6028E-07, & 0.5746E-07, 0.5468E-07, 0.5227E-07, 0.5006E-07, 0.4789E-07, & 0.4576E-07, 0.4402E-07, 0.4230E-07, 0.4062E-07, 0.3897E-07, & 0.3793E-07, 0.3697E-07, 0.3602E-07, 0.3506E-07, 0.3413E-07, & 0.3326E-07, 0.3239E-07, 0.3153E-07, 0.3069E-07, 0.2987E-07/ !-------------------------------------------------------------------------------- ! data set 4 ! tropical (75 levels) : p(mb) o3(g/g) ! surface temp = 300.0 ! data (pres(i,5),i=1,np)/ & 0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, & 0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, & 0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, & 0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, & 0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, & 4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, & 31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, & 157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, & 299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, & 442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, & 585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, & 727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, & 870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, & 1013.0000/ ! data (ozone(i,5),i=1,np)/ & 0.1993E-06, 0.2521E-06, 0.3051E-06, 0.3585E-06, 0.4121E-06, & 0.4661E-06, 0.5203E-06, 0.5748E-06, 0.6296E-06, 0.6847E-06, & 0.7402E-06, 0.7959E-06, 0.8519E-06, 0.9096E-06, 0.1125E-05, & 0.1450E-05, 0.1794E-05, 0.2156E-05, 0.2538E-05, 0.2939E-05, & 0.3362E-05, 0.3785E-05, 0.4753E-05, 0.6005E-05, 0.7804E-05, & 0.9635E-05, 0.1023E-04, 0.1067E-04, 0.1177E-04, 0.1290E-04, & 0.1134E-04, 0.9223E-05, 0.6667E-05, 0.3644E-05, 0.1545E-05, & 0.5355E-06, 0.2523E-06, 0.2062E-06, 0.1734E-06, 0.1548E-06, & 0.1360E-06, 0.1204E-06, 0.1074E-06, 0.9707E-07, 0.8960E-07, & 0.8419E-07, 0.7962E-07, 0.7542E-07, 0.7290E-07, 0.7109E-07, & 0.6940E-07, 0.6786E-07, 0.6635E-07, 0.6500E-07, 0.6370E-07, & 0.6244E-07, 0.6132E-07, 0.6022E-07, 0.5914E-07, 0.5884E-07, & 0.5855E-07, 0.5823E-07, 0.5772E-07, 0.5703E-07, 0.5635E-07, & 0.5570E-07, 0.5492E-07, 0.5412E-07, 0.5335E-07, 0.5260E-07, & 0.5167E-07, 0.5063E-07, 0.4961E-07, 0.4860E-07, 0.4761E-07/ !-------------------------------------------------------------------------------- #ifdef WRF_CHEM IF ( aer_ra_feedback == 1) then IF ( .NOT. & ( PRESENT(tauaer300) .AND. & PRESENT(tauaer400) .AND. & PRESENT(tauaer600) .AND. & PRESENT(tauaer999) .AND. & PRESENT(gaer300) .AND. & PRESENT(gaer400) .AND. & PRESENT(gaer600) .AND. & PRESENT(gaer999) .AND. & PRESENT(waer300) .AND. & PRESENT(waer400) .AND. & PRESENT(waer600) .AND. & PRESENT(waer999) ) ) THEN CALL wrf_error_fatal ( 'Warning: missing fields required for aerosol radiation' ) ENDIF ENDIF #endif cldwater = .true. overcast = .false. mix=ite-its+1 mkx=kte-kts+1 is_summer=80 ie_summer=265 ! testing, need to change iprof, which is function of lat and julian day ! iprof = 1 : mid-latitude summer profile ! = 2 : mid-latitude winter profile ! = 3 : sub-arctic summer profile ! = 4 : sub-arctic winter profile ! = 5 : tropical profile IF (abs(center_lat) .le. 30. ) THEN ! tropic iprof = 5 ELSE IF (center_lat .gt. 0.) THEN IF (center_lat .gt. 60. ) THEN ! arctic IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN ! arctic summer iprof = 3 ELSE ! arctic winter iprof = 4 ENDIF ELSE ! midlatitude IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN ! north midlatitude summer iprof = 1 ELSE ! north midlatitude winter iprof = 2 ENDIF ENDIF ELSE IF (center_lat .lt. -60. ) THEN ! antarctic IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN ! antarctic summer iprof = 3 ELSE ! antarctic winter iprof = 4 ENDIF ELSE ! midlatitude IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN ! south midlatitude summer iprof = 1 ELSE ! south midlatitude winter iprof = 2 ENDIF ENDIF ENDIF ENDIF j_loop: DO J=jts,jte DO K=kts,kte DO I=its,ite cwc(i,k,1) = 0. cwc(i,k,2) = 0. ENDDO ENDDO DO K=1,np p(k)=pres(k,iprof) ENDDO ! reverse vars ! DO K=kts,kte+1 DO I=its,ite NK=kme-K+kms P8W2D(I,K)=p8w3d(i,nk,j)*0.01 ! P8w2D is in mb ENDDO ENDDO DO I=its,ite P8W2D(I,0)=.0 ENDDO ! DO K=kts,kte DO I=its,ite NK=kme-1-K+kms TTEN2D(I,K)=0. T2D(I,K)=T3D(I,NK,J) ! SH2D specific humidity SH2D(I,K)=QV3D(I,NK,J)/(1.+QV3D(I,NK,J)) SH2D(I,K)=max(0.,SH2D(I,K)) cwc(I,K,2)=QC3D(I,NK,J) cwc(I,K,2)=max(0.,cwc(I,K,2)) P2D(I,K)=p3d(i,nk,j)*0.01 ! P2D is in mb fcld2D(I,K)=CLDFRA3D(I,NK,J) ENDDO ENDDO ! This logic is tortured because cannot test F_QI unless ! it is present, and order of evaluation of expressions ! is not specified in Fortran IF ( PRESENT ( F_QI ) ) THEN predicate = F_QI ELSE predicate = .FALSE. ENDIF IF (.NOT. warm_rain .AND. .NOT. predicate ) THEN DO K=kts,kte DO I=its,ite IF (T2D(I,K) .lt. 273.15) THEN cwc(I,K,1)=cwc(I,K,2) cwc(I,K,2)=0. ENDIF ENDDO ENDDO ENDIF IF ( PRESENT( F_QNDROP ) ) THEN IF ( F_QNDROP ) THEN DO K=kts,kte DO I=its,ite NK=kme-1-K+kms qndrop2d(I,K)=qndrop3d(I,NK,j) ENDDO ENDDO qndrop2d(:,kts-1)=0. END IF END IF DO I=its,ite TTEN2D(I,0)=0. T2D(I,0)=T2D(I,1) ! SH2D specific humidity SH2D(I,0)=0.5*SH2D(i,1) cwc(I,0,2)=0. cwc(I,0,1)=0. P2D(I,0)=0.5*(P8W2D(I,0)+P8W2D(I,1)) fcld2D(I,0)=0. ENDDO ! IF ( PRESENT( F_QI ) .AND. PRESENT( qi3d) ) THEN IF ( (F_QI) ) THEN DO K=kts,kte DO I=its,ite NK=kme-1-K+kms cwc(I,K,1)=QI3D(I,NK,J) cwc(I,K,1)=max(0.,cwc(I,K,1)) ENDDO ENDDO ENDIF ENDIF ! ! ... Vertical profiles for ozone ! call o3prof (np, p, ozone(1,iprof), its, ite, kts-1, kte, P2D, O3) ! ... Vertical profiles for effective particle size ! pi = 4.*atan(1.0) third=1./3. rhoh2o=1.e3 relconst=3/(4.*pi*rhoh2o) ! minimun liquid water path to calculate rel ! corresponds to optical depth of 1.e-3 for radius 4 microns. lwpmin=3.e-5 do k = kts-1, kte do i = its, ite reff(i,k,2) = 10. if( PRESENT( F_QNDROP ) ) then if( F_QNDROP ) then if ( cwc(i,k,2)*(P8W2D(I,K+1)-P8W2D(I,K)).gt.lwpmin.and. & qndrop2d(i,k).gt.1000. ) then reff(i,k,2)=(relconst*cwc(i,k,2)/qndrop2d(i,k))**third ! effective radius in m ! apply scaling from Martin et al., JAS 51, 1830. reff(i,k,2)=1.1*reff(i,k,2) reff(i,k,2)=reff(i,k,2)*1.e6 ! convert from m to microns reff(i,k,2)=max(reff(i,k,2),4.) reff(i,k,2)=min(reff(i,k,2),20.) end if end if end if reff(i,k,1) = 80. end do end do ! ! ... Level indices separating high, middle and low clouds ! do i = its, ite p400(i) = 1.e5 p700(i) = 1.e5 enddo do k = kts-1,kte+1 do i = its, ite if (abs(P8W2D(i,k) - 400.) .lt. p400(i)) then p400(i) = abs(P8W2D(i,k) - 400.) ict(i) = k endif if (abs(P8W2D(i,k) - 700.) .lt. p700(i)) then p700(i) = abs(P8W2D(i,k) - 700.) icb(i) = k endif end do end do !wig beg ! ... Aerosol effects. Added aerosol feedbacks with MOSAIC, Dec. 2005. ! do ib = 1, 11 do k = kts-1,kte do i = its,ite taual(i,k,ib) = 0. ssaal(i,k,ib) = 0. asyal(i,k,ib) = 0. end do end do end do #ifdef WRF_CHEM IF ( AER_RA_FEEDBACK == 1) then !wig end do ib = 1, 11 do k = kts-1,kte-1 !wig do i = its,ite ! taual(i,kte-k,ib) = 0. ! ssaal(i,kte-k,ib) = 0. ! asyal(i,kte-k,ib) = 0. !jcb beg ! convert optical properties at 300,400,600, and 999 to conform to the band wavelengths ! these are: 200,235,270,287.5,302.5,305,362.5,550,1920,1745,6135; why the emphasis on the UV? ! taual - use angstrom exponent if(tauaer300(i,k+1,j).gt.thresh .and. tauaer999(i,k+1,j).gt.thresh) then ang=log(tauaer300(i,k+1,j)/tauaer999(i,k+1,j))/log(999./300.) ! write(6,*)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j) taual(i,kte-k,ib)=tauaer400(i,k+1,j)*(0.4/midbands(ib))**ang ! notice reserved variable ! write(6,10001)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j),midbands(ib),taual(i,k,ib) !10001 format(i3,i3,5f12.6) ! ssa - linear interpolation; extrapolation slope=(waer600(i,k+1,j)-waer400(i,k+1,j))/.2 ssaal(i,kte-k,ib) = slope*(midbands(ib)-.6)+waer600(i,k+1,j) ! notice reversed variables if(ssaal(i,kte-k,ib).lt.0.4) ssaal(i,kte-k,ib)=0.4 if(ssaal(i,kte-k,ib).ge.1.0) ssaal(i,kte-k,ib)=1.0 ! g - linear interpolation;extrapolation slope=(gaer600(i,k+1,j)-gaer400(i,k+1,j))/.2 asyal(i,kte-k,ib) = slope*(midbands(ib)-.6)+gaer600(i,k+1,j) ! notice reversed varaibles if(asyal(i,kte-k,ib).lt.0.5) asyal(i,kte-k,ib)=0.5 if(asyal(i,kte-k,ib).ge.1.0) asyal(i,kte-k,ib)=1.0 endif !jcb end end do end do end do !wig beg do ib = 1, 11 do i = its,ite slope = 0. !use slope as a sum holder do k = kts-1,kte slope = slope + taual(i,k,ib) end do if( slope < 0. ) then write(msg,'("ERROR: Negative total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib call wrf_error_fatal(msg) else if( slope > 5. ) then call wrf_message("-------------------------") write(msg,'("WARNING: Large total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib call wrf_message(msg) call wrf_message("Diagnostics 1: k, tauaer300, tauaer400, tauaer600, tauaer999") do k=kts,kte write(msg,'(i4,4f8.2)') k, tauaer300(i,k,j), tauaer400(i,k,j), & tauaer600(i,k,j), tauaer999(i,k,j) call wrf_message(msg) end do call wrf_message("Diagnostics 2: k, gaer300, gaer400, gaer600, gaer999") do k=kts,kte write(msg,'(i4,4f8.2)') k, gaer300(i,k,j), gaer400(i,k,j), & gaer600(i,k,j), gaer999(i,k,j) call wrf_message(msg) end do call wrf_message("Diagnostics 3: k, waer300, waer400, waer600, waer999") do k=kts,kte write(msg,'(i4,4f8.2)') k, waer300(i,k,j), waer400(i,k,j), & waer600(i,k,j), waer999(i,k,j) call wrf_message(msg) end do call wrf_message("Diagnostics 4: k, ssaal, asyal, taual") do k=kts-1,kte write(msg,'(i4,3f8.2)') k, ssaal(i,k,ib), asyal(i,k,ib), taual(i,k,ib) call wrf_message(msg) end do call wrf_message("-------------------------") end if end do end do !wig end endif #endif ! ! ... Initialize output arrays ! do ib = 1, 2 do k = kts-1, kte do i = its, ite taucld(i,k,ib) = 0. end do end do end do ! do k = kts-1,kte+1 do i = its,ite flx(i,k) = 0. flxd(i,k) = 0. end do end do ! ! ... Solar zenith angle ! do i = its,ite xt24 = mod(xtime + radfrq * 0.5, 1440.) tloctm = GMT + xt24 / 60. + XLONG(i,j) / 15. hrang = 15. * (tloctm - 12.) * degrad xxlat = XLAT(i,j) * degrad cosz(i) = sin(xxlat) * sin(declin) + & cos(xxlat) * cos(declin) * cos(hrang) rsuvbm(i) = ALB(i,j) rsuvdf(i) = ALB(i,j) rsirbm(i) = ALB(i,j) rsirdf(i) = ALB(i,j) end do call sorad (mix,1,1,mkx+1,p8w2D,t2D,sh2D,o3, & overcast,cldwater,cwc,taucld,reff,fcld2D,ict,icb,& taual,ssaal,asyal, & cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, & flx,flxd) ! ! ... Convert the units of flx and flc from fraction to w/m^2 ! do k = kts, kte do i = its, ite nk=kme-1-k+kms if(present(taucldc)) taucldc(i,nk,j)=taucld(i,k,2) if(present(taucldi)) taucldi(i,nk,j)=taucld(i,k,1) enddo enddo do k = kts, kte+1 do i = its, ite if (cosz(i) .lt. thresh) then flx(i,k) = 0. else flx(i,k) = flx(i,k) * SOLCON * cosz(i) endif end do end do ! ! ... Calculate heating rate (deg/sec) ! fac = .01 * g / Cp do k = kts, kte do i = its, ite if (cosz(i) .gt. thresh) then TTEN2D(i,k) = - fac * (flx(i,k) - flx(i,k+1))/ & (p8w2d(i,k)-p8w2d(i,k+1)) endif end do end do ! upward top of atmosphere do i = its, ite if (cosz(i) .le. thresh) then RSWTOA(i,j) = 0. else RSWTOA(i,j) = (flx(i,kts) - flxd(i,kts)) * SOLCON * cosz(i) endif end do ! ! ... Absorbed part in surface energy budget ! do i = its, ite if (cosz(i) .le. thresh) then GSW(i,j) = 0. else GSW(i,j) = (1. - rsuvbm(i)) * flxd(i,kte+1) * SOLCON * cosz(i) endif end do DO K=kts,kte NK=kme-1-K+kms DO I=its,ite ! FIX FROM GODDARD FOR NEGATIVE VALUES TTEN2D(I,NK)=MAX(TTEN2D(I,NK),0.) RTHRATEN(I,K,J)=RTHRATEN(I,K,J)+TTEN2D(I,NK)/pi3D(I,K,J) ENDDO ENDDO ! ENDDO j_loop END SUBROUTINE GSFCSWRAD !********************* Version Solar-6 (May 8, 1997) ***************** subroutine sorad (m,n,ndim,np,pl,ta,wa,oa, & overcast,cldwater,cwc,taucld,reff,fcld,ict,icb, & taual,ssaal,asyal, & cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, & flx,flxd) !************************************************************************ ! ! Version Solar-6 (May 8, 1997) ! ! New feature of this version is: ! (1) An option is added for scaling the cloud optical thickness. If ! the fractional cloud cover, fcld, in an atmospheric model is alway ! either 1 or 0 (i.e. partly cloudy sky is not allowed), it does ! not require the scaling of cloud optical thickness, and the ! option "overcast" can be set to .true. Computation is faster ! with this option than with overcast=.false. ! !********************************************************************** ! ! Version Solar-5 (April 1997) ! ! New features of this version are: ! (1) Cloud optical properties can be computed from cloud water/ice ! amount and the effective particle size. ! (2) Aerosol optical properties are functions of height and band. ! (3) A maximum-random cloud overlapping approximation is applied. ! !********************************************************************* ! ! This routine computes solar fluxes due to the absoption by water ! vapor, ozone, co2, o2, clouds, and aerosols and due to the ! scattering by clouds, aerosols, and gases. ! ! The solar spectrum is divided into one UV+visible band and three IR ! bands separated by the wavelength 0.7 micron. The UV+visible band ! is further divided into eight sub-bands. ! ! This is a vectorized code. It computes fluxes simultaneously for ! (m x n) soundings, which is a subset of (m x ndim) soundings. ! In a global climate model, m and ndim correspond to the numbers of ! grid boxes in the zonal and meridional directions, respectively. ! ! Ice and liquid cloud particles are allowed to co-exist in a layer. ! ! There is an option of providing either cloud ice/water mixing ratio ! (cwc) or thickness (taucld). If the former is provided, set ! cldwater=.true., and taucld will be computed from cwc and reff as a ! function of spectra band. Otherwise, set cldwater=.false., and ! specify taucld, independent of spectral band. ! ! If no information is available for reff, a default value of ! 10 micron for liquid water and 75 micron for ice can be used. ! For a clear layer, reff can be set to any values except zero. ! ! The maximum-random assumption is applied for treating cloud ! overlapping. ! Clouds are grouped into high, middle, and low clouds separated by ! the level indices ict and icb. For detail, see subroutine cldscale. ! ! In a high spatial-resolution atmospheric model, fractional cloud cover ! might be computed to be either 0 or 1. In such a case, scaling of the ! cloud optical thickness is not necessary, and the computation can be ! made faster by setting overcast=.true. The option overcast=.false. ! can be applied to any values of the fractional cloud cover, but the ! computation is slower. ! ! Aerosol optical thickness, single-scattering albaedo, and asymmtry ! factor can be specified as functions of height and spectral band. ! !----- Input parameters: ! units size ! number of soundings in zonal direction (m) n/d 1 ! number of soundings in meridional direction (n) n/d 1 ! maximum number of soundings in n/d 1 ! meridional direction (ndim>=n) ! number of atmospheric layers (np) n/d 1 ! level pressure (pl) mb m*ndim*(np+1) ! layer temperature (ta) k m*ndim*np ! layer specific humidity (wa) gm/gm m*ndim*np ! layer ozone concentration (oa) gm/gm m*ndim*np ! co2 mixing ratio by volumn (co2) pppv 1 ! option for scaling cloud optical thickness n/d 1 ! overcast="true" if scaling is NOT required ! overcast="fasle" if scaling is required ! option for cloud optical thickness n/d 1 ! cldwater="true" if cwc is provided ! cldwater="false" if taucld is provided ! cloud water mixing ratio (cwc) gm/gm m*ndim*np*2 ! index 1 for ice particles ! index 2 for liquid drops ! cloud optical thickness (taucld) n/d m*ndim*np*2 ! index 1 for ice particles ! index 2 for liquid drops ! effective cloud-particle size (reff) micrometer m*ndim*np*2 ! index 1 for ice particles ! index 2 for liquid drops ! cloud amount (fcld) fraction m*ndim*np ! level index separating high and middle n/d 1 ! clouds (ict) ! level index separating middle and low n/d 1 ! clouds (icb) ! aerosol optical thickness (taual) n/d m*ndim*np*11 ! aerosol single-scattering albedo (ssaal) n/d m*ndim*np*11 ! aerosol asymmetry factor (asyal) n/d m*ndim*np*11 ! in the uv region : ! index 1 for the 0.175-0.225 micron band ! index 2 for the 0.225-0.245; 0.260-0.280 micron band ! index 3 for the 0.245-0.260 micron band ! index 4 for the 0.280-0.295 micron band ! index 5 for the 0.295-0.310 micron band ! index 6 for the 0.310-0.320 micron band ! index 7 for the 0.325-0.400 micron band ! in the par region : ! index 8 for the 0.400-0.700 micron band ! in the infrared region : ! index 9 for the 0.700-1.220 micron band ! index 10 for the 1.220-2.270 micron band ! index 11 for the 2.270-10.00 micron band ! cosine of solar zenith angle (cosz) n/d m*ndim ! uv+visible sfc albedo for beam radiation ! for wavelengths<0.7 micron (rsuvbm) fraction m*ndim ! uv+visible sfc albedo for diffuse radiation ! for wavelengths<0.7 micron (rsuvdf) fraction m*ndim ! ir sfc albedo for beam radiation ! for wavelengths>0.7 micron (rsirbm) fraction m*ndim ! ir sfc albedo for diffuse radiation (rsirdf) fraction m*ndim ! !----- Output parameters ! ! all-sky flux (downward minus upward) (flx) fraction m*ndim*(np+1) ! clear-sky flux (downward minus upward) (flc) fraction m*ndim*(np+1) ! all-sky direct downward uv (0.175-0.4 micron) ! flux at the surface (fdiruv) fraction m*ndim ! all-sky diffuse downward uv flux at ! the surface (fdifuv) fraction m*ndim ! all-sky direct downward par (0.4-0.7 micron) ! flux at the surface (fdirpar) fraction m*ndim ! all-sky diffuse downward par flux at ! the surface (fdifpar) fraction m*ndim ! all-sky direct downward ir (0.7-10 micron) ! flux at the surface (fdirir) fraction m*ndim ! all-sky diffuse downward ir flux at ! the surface (fdifir) fraction m*ndim ! !----- Notes: ! ! (1) The unit of "flux" is fraction of the incoming solar radiation ! at the top of the atmosphere. Therefore, fluxes should ! be equal to "flux" multiplied by the extra-terrestrial solar ! flux and the cosine of solar zenith angle. ! (2) pl(i,j,1) is the pressure at the top of the model, and ! pl(i,j,np+1) is the surface pressure. ! (3) the pressure levels ict and icb correspond approximately ! to 400 and 700 mb. ! (4) if overcast='true', the clear-sky flux, flc, is not computed. ! !************************************************************************** implicit none !************************************************************************** !-----input parameters integer m,n,ndim,np integer ict(m,ndim),icb(m,ndim) real pl(m,ndim,np+1),ta(m,ndim,np),wa(m,ndim,np),oa(m,ndim,np) real cwc(m,ndim,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2), & fcld(m,ndim,np) real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11) real cosz(m,ndim),rsuvbm(m,ndim),rsuvdf(m,ndim), & rsirbm(m,ndim),rsirdf(m,ndim) logical overcast,cldwater !-----output parameters real flx(m,ndim,np+1),flc(m,ndim,np+1) real flxu(m,ndim,np+1),flxd(m,ndim,np+1) real fdiruv (m,ndim),fdifuv (m,ndim) real fdirpar(m,ndim),fdifpar(m,ndim) real fdirir (m,ndim),fdifir (m,ndim) !-----temporary array integer i,j,k real cwp(m,n,np,2) real dp(m,n,np),wh(m,n,np),oh(m,n,np),scal(m,n,np) real swh(m,n,np+1),so2(m,n,np+1),df(m,n,np+1) real sdf(m,n),sclr(m,n),csm(m,n),x do j= 1, n do i= 1, m if (pl(i,j,1) .eq. 0.0) then pl(i,j,1)=1.0e-4 endif enddo enddo do j= 1, n do i= 1, m swh(i,j,1)=0. so2(i,j,1)=0. !-----csm is the effective secant of the solar zenith angle ! see equation (12) of Lacis and Hansen (1974, JAS) csm(i,j)=35./sqrt(1224.*cosz(i,j)*cosz(i,j)+1.) enddo enddo do k= 1, np do j= 1, n do i= 1, m !-----compute layer thickness and pressure-scaling function. ! indices for the surface level and surface layer ! are np+1 and np, respectively. dp(i,j,k)=pl(i,j,k+1)-pl(i,j,k) scal(i,j,k)=dp(i,j,k)*(.5*(pl(i,j,k)+pl(i,j,k+1))/300.)**.8 !-----compute scaled water vapor amount, unit is g/cm**2 ! note: the sign prior to the constant 0.00135 was incorrectly ! set to negative in the previous version wh(i,j,k)=1.02*wa(i,j,k)*scal(i,j,k)* & (1.+0.00135*(ta(i,j,k)-240.)) +1.e-11 swh(i,j,k+1)=swh(i,j,k)+wh(i,j,k) !-----compute ozone amount, unit is (cm-atm)stp ! the number 466.7 is a conversion factor from g/cm**2 to (cm-atm)stp oh(i,j,k)=1.02*oa(i,j,k)*dp(i,j,k)*466.7 +1.e-11 !-----compute layer cloud water amount (gm/m**2) ! the index is 1 for ice crystals and 2 for liquid drops cwp(i,j,k,1)=1.02*10000.*cwc(i,j,k,1)*dp(i,j,k) cwp(i,j,k,2)=1.02*10000.*cwc(i,j,k,2)*dp(i,j,k) enddo enddo enddo !-----initialize fluxes for all-sky (flx), clear-sky (flc), and ! flux reduction (df) do k=1, np+1 do j=1, n do i=1, m flx(i,j,k)=0. flc(i,j,k)=0. flxu(i,j,k)=0. flxd(i,j,k)=0. df(i,j,k)=0. enddo enddo enddo !-----compute solar uv and par fluxes call soluv (m,n,ndim,np,oh,dp,overcast,cldwater, & cwp,taucld,reff,ict,icb,fcld,cosz, & taual,ssaal,asyal,csm,rsuvbm,rsuvdf, & flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar) !-----compute and update solar ir fluxes call solir (m,n,ndim,np,wh,overcast,cldwater, & cwp,taucld,reff,ict,icb,fcld,cosz, & taual,ssaal,asyal,csm,rsirbm,rsirdf, & flx,flc,flxu,flxd,fdirir,fdifir) !-----compute scaled o2 amount, unit is (cm-atm)stp. do k= 1, np do j= 1, n do i= 1, m so2(i,j,k+1)=so2(i,j,k)+165.22*scal(i,j,k) enddo enddo enddo !-----compute flux reduction due to oxygen following ! chou (J. climate, 1990). The fraction 0.0287 is the ! extraterrestrial solar flux in the o2 bands. do k= 2, np+1 do j= 1, n do i= 1, m x=so2(i,j,k)*csm(i,j) df(i,j,k)=df(i,j,k)+0.0287*(1.-exp(-0.00027*sqrt(x))) enddo enddo enddo !-----compute scaled co2 amounts. unit is (cm-atm)stp. do k= 1, np do j= 1, n do i= 1, m so2(i,j,k+1)=so2(i,j,k)+co2*789.*scal(i,j,k)+1.e-11 enddo enddo enddo !-----compute and update flux reduction due to co2 following ! chou (J. Climate, 1990) call flxco2(m,n,np,so2,swh,csm,df) !-----adjust for the effect of o2 cnd co2 on clear-sky fluxes. do k= 2, np+1 do j= 1, n do i= 1, m flc(i,j,k)=flc(i,j,k)-df(i,j,k) enddo enddo enddo !-----adjust for the all-sky fluxes due to o2 and co2. It is ! assumed that o2 and co2 have no effects on solar radiation ! below clouds. do j=1,n do i=1,m sdf(i,j)=0.0 sclr(i,j)=1.0 enddo enddo do k=1,np do j=1,n do i=1,m !-----sclr is the fraction of clear sky. ! sdf is the flux reduction below clouds. if(fcld(i,j,k).gt.0.01) then sdf(i,j)=sdf(i,j)+df(i,j,k)*sclr(i,j)*fcld(i,j,k) sclr(i,j)=sclr(i,j)*(1.-fcld(i,j,k)) endif flx(i,j,k+1)=flx(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j) flxu(i,j,k+1)=flxu(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j) flxd(i,j,k+1)=flxd(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j) ! SG: same as flux???? enddo enddo enddo !-----adjustment for the direct downward ir flux. do j= 1, n do i= 1, m flc(i,j,np+1)=flc(i,j,np+1)+df(i,j,np+1)*rsirbm(i,j) flx(i,j,np+1)=flx(i,j,np+1)+(sdf(i,j)+ & df(i,j,np+1)*sclr(i,j))*rsirbm(i,j) flxu(i,j,np+1)=flxu(i,j,np+1)+(sdf(i,j)+ & df(i,j,np+1)*sclr(i,j))*rsirbm(i,j) flxd(i,j,np+1)=flxd(i,j,np+1)+(sdf(i,j)+ & df(i,j,np+1)*sclr(i,j))*rsirbm(i,j) fdirir(i,j)=fdirir(i,j)-(sdf(i,j)+df(i,j,np+1)*sclr(i,j)) enddo enddo end subroutine sorad !************************************************************************ subroutine soluv (m,n,ndim,np,oh,dp,overcast,cldwater, & cwp,taucld,reff,ict,icb,fcld,cosz, & taual,ssaal,asyal,csm,rsuvbm,rsuvdf, & flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar) !************************************************************************ ! compute solar fluxes in the uv+par region. the spectrum is ! grouped into 8 bands: ! ! Band Micrometer ! ! UV-C 1. .175 - .225 ! 2. .225 - .245 ! .260 - .280 ! 3. .245 - .260 ! ! UV-B 4. .280 - .295 ! 5. .295 - .310 ! 6. .310 - .320 ! ! UV-A 7. .320 - .400 ! ! PAR 8. .400 - .700 ! !----- Input parameters: units size ! ! number of soundings in zonal direction (m) n/d 1 ! number of soundings in meridional direction (n) n/d 1 ! maximum number of soundings in n/d 1 ! meridional direction (ndim) ! number of atmospheric layers (np) n/d 1 ! layer ozone content (oh) (cm-atm)stp m*n*np ! layer pressure thickness (dp) mb m*n*np ! option for scaling cloud optical thickness n/d 1 ! overcast="true" if scaling is NOT required ! overcast="fasle" if scaling is required ! input option for cloud optical thickness n/d 1 ! cldwater="true" if taucld is provided ! cldwater="false" if cwp is provided ! cloud water amount (cwp) gm/m**2 m*n*np*2 ! index 1 for ice particles ! index 2 for liquid drops ! cloud optical thickness (taucld) n/d m*ndim*np*2 ! index 1 for ice paticles ! index 2 for liquid particles ! effective cloud-particle size (reff) micrometer m*ndim*np*2 ! index 1 for ice paticles ! index 2 for liquid particles ! level indiex separating high and n/d m*n ! middle clouds (ict) ! level indiex separating middle and n/d m*n ! low clouds (icb) ! cloud amount (fcld) fraction m*ndim*np ! cosine of solar zenith angle (cosz) n/d m*ndim ! aerosol optical thickness (taual) n/d m*ndim*np*11 ! aerosol single-scattering albedo (ssaal) n/d m*ndim*np*11 ! aerosol asymmetry factor (asyal) n/d m*ndim*np*11 ! cosecant of the solar zenith angle (csm) n/d m*n ! uv+par surface albedo for beam fraction m*ndim ! radiation (rsuvbm) ! uv+par surface albedo for diffuse fraction m*ndim ! radiation (rsuvdf) ! !---- temporary array ! ! scaled cloud optical thickness n/d m*n*np ! for beam radiation (tauclb) ! scaled cloud optical thickness n/d m*n*np ! for diffuse radiation (tauclf) ! !----- output (updated) parameters: ! ! all-sky net downward flux (flx) fraction m*ndim*(np+1) ! clear-sky net downward flux (flc) fraction m*ndim*(np+1) ! all-sky direct downward uv flux at ! the surface (fdiruv) fraction m*ndim ! all-sky diffuse downward uv flux at ! the surface (fdifuv) fraction m*ndim ! all-sky direct downward par flux at ! the surface (fdirpar) fraction m*ndim ! all-sky diffuse downward par flux at ! the surface (fdifpar) fraction m*ndim ! !*********************************************************************** implicit none !*********************************************************************** !-----input parameters integer m,n,ndim,np integer ict(m,ndim),icb(m,ndim) real taucld(m,ndim,np,2),reff(m,ndim,np,2),fcld(m,ndim,np) real cc(m,n,3),cosz(m,ndim) real cwp(m,n,np,2),oh(m,n,np),dp(m,n,np) real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11) real rsuvbm(m,ndim),rsuvdf(m,ndim),csm(m,n) logical overcast,cldwater !-----output (updated) parameter real flx(m,ndim,np+1),flc(m,ndim,np+1) real flxu(m,ndim,np+1),flxd(m,ndim,np+1) real fdiruv (m,ndim),fdifuv (m,ndim) real fdirpar(m,ndim),fdifpar(m,ndim) !-----static parameters integer nband parameter (nband=8) real hk(nband),xk(nband),ry(nband) real aig(3),awg(3) !-----temporary array integer i,j,k,ib real tauclb(m,n,np),tauclf(m,n,np),asycl(m,n,np) real taurs,tauoz,tausto,ssatau,asysto,tauto,ssato,asyto real taux,reff1,reff2,g1,g2 real td(m,n,np+1,2),rr(m,n,np+1,2),tt(m,n,np+1,2), & rs(m,n,np+1,2),ts(m,n,np+1,2) real fall(m,n,np+1),fclr(m,n,np+1),fsdir(m,n),fsdif(m,n) real fallu(m,n,np+1),falld(m,n,np+1) real asyclt(m,n) real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n) real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n) !-----hk is the fractional extra-terrestrial solar flux in each ! of the 8 bands. the sum of hk is 0.47074. data hk/.00057, .00367, .00083, .00417, & .00600, .00556, .05913, .39081/ !-----xk is the ozone absorption coefficient. unit: /(cm-atm)stp data xk /30.47, 187.2, 301.9, 42.83, & 7.09, 1.25, 0.0345, 0.0539/ !-----ry is the extinction coefficient for Rayleigh scattering. ! unit: /mb. data ry /.00604, .00170, .00222, .00132, & .00107, .00091, .00055, .00012/ !-----coefficients for computing the asymmetry factor of ice clouds ! from asycl=aig(*,1)+aig(*,2)*reff+aig(*,3)*reff**2, independent ! of spectral band. data aig/.74625000,.00105410,-.00000264/ !-----coefficients for computing the asymmetry factor of liquid ! clouds from asycl=awg(*,1)+awg(*,2)*reff+awg(*,3)*reff**2, ! independent of spectral band. data awg/.82562000,.00529000,-.00014866/ !-----initialize fdiruv, fdifuv, surface reflectances and transmittances. ! cc is the maximum cloud cover in each of the three cloud groups. do j= 1, n do i= 1, m fdiruv(i,j)=0.0 fdifuv(i,j)=0.0 rr(i,j,np+1,1)=rsuvbm(i,j) rr(i,j,np+1,2)=rsuvbm(i,j) rs(i,j,np+1,1)=rsuvdf(i,j) rs(i,j,np+1,2)=rsuvdf(i,j) td(i,j,np+1,1)=0.0 td(i,j,np+1,2)=0.0 tt(i,j,np+1,1)=0.0 tt(i,j,np+1,2)=0.0 ts(i,j,np+1,1)=0.0 ts(i,j,np+1,2)=0.0 cc(i,j,1)=0.0 cc(i,j,2)=0.0 cc(i,j,3)=0.0 enddo enddo !-----compute cloud optical thickness if (cldwater) then do k= 1, np do j= 1, n do i= 1, m taucld(i,j,k,1)=cwp(i,j,k,1)*( 3.33e-4+2.52/reff(i,j,k,1)) taucld(i,j,k,2)=cwp(i,j,k,2)*(-6.59e-3+1.65/reff(i,j,k,2)) enddo enddo enddo endif !-----options for scaling cloud optical thickness if (overcast) then do k= 1, np do j= 1, n do i= 1, m tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2) tauclf(i,j,k)=tauclb(i,j,k) enddo enddo enddo do k= 1, 3 do j= 1, n do i= 1, m cc(i,j,k)=1.0 enddo enddo enddo else !-----scale cloud optical thickness in each layer from taucld (with ! cloud amount fcld) to tauclb and tauclf (with cloud amount cc). ! tauclb is the scaled optical thickness for beam radiation and ! tauclf is for diffuse radiation. call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, & cc,tauclb,tauclf) endif !-----compute cloud asymmetry factor for a mixture of ! liquid and ice particles. unit of reff is micrometers. do k= 1, np do j= 1, n do i= 1, m asyclt(i,j)=1.0 taux=taucld(i,j,k,1)+taucld(i,j,k,2) if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then reff1=min(reff(i,j,k,1),130.) reff2=min(reff(i,j,k,2),20.0) g1=(aig(1)+(aig(2)+aig(3)*reff1)*reff1)*taucld(i,j,k,1) g2=(awg(1)+(awg(2)+awg(3)*reff2)*reff2)*taucld(i,j,k,2) asyclt(i,j)=(g1+g2)/taux endif enddo enddo do j=1,n do i=1,m asycl(i,j,k)=asyclt(i,j) enddo enddo enddo !-----integration over spectral bands do 100 ib=1,nband do 300 k= 1, np do j= 1, n do i= 1, m !-----compute ozone and rayleigh optical thicknesses taurs=ry(ib)*dp(i,j,k) tauoz=xk(ib)*oh(i,j,k) !-----compute clear-sky optical thickness, single scattering albedo, ! and asymmetry factor tausto=taurs+tauoz+taual(i,j,k,ib)+1.0e-8 ssatau=ssaal(i,j,k,ib)*taual(i,j,k,ib)+taurs asysto=asyal(i,j,k,ib)*ssaal(i,j,k,ib)*taual(i,j,k,ib) tauto=tausto ssato=ssatau/tauto+1.0e-8 ssato=min(ssato,0.999999) asyto=asysto/(ssato*tauto) !-----compute reflectance and transmittance for cloudless layers !- for direct incident radiation call deledd (tauto,ssato,asyto,csm(i,j), & rr1t(i,j),tt1t(i,j),td1t(i,j)) !- for diffuse incident radiation call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j)) !-----compute reflectance and transmittance for cloud layers if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then rr2t(i,j)=rr1t(i,j) tt2t(i,j)=tt1t(i,j) td2t(i,j)=td1t(i,j) rs2t(i,j)=rs1t(i,j) ts2t(i,j)=ts1t(i,j) else !-- for direct incident radiation tauto=tausto+tauclb(i,j,k) ssato=(ssatau+tauclb(i,j,k))/tauto+1.0e-8 ssato=min(ssato,0.999999) asyto=(asysto+asycl(i,j,k)*tauclb(i,j,k))/(ssato*tauto) call deledd (tauto,ssato,asyto,csm(i,j), & rr2t(i,j),tt2t(i,j),td2t(i,j)) !-- for diffuse incident radiation tauto=tausto+tauclf(i,j,k) ssato=(ssatau+tauclf(i,j,k))/tauto+1.0e-8 ssato=min(ssato,0.999999) asyto=(asysto+asycl(i,j,k)*tauclf(i,j,k))/(ssato*tauto) call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j)) endif enddo enddo do j=1,n do i=1,m rr(i,j,k,1)=rr1t(i,j) enddo enddo do j=1,n do i=1,m tt(i,j,k,1)=tt1t(i,j) enddo enddo do j=1,n do i=1,m td(i,j,k,1)=td1t(i,j) enddo enddo do j=1,n do i=1,m rs(i,j,k,1)=rs1t(i,j) enddo enddo do j=1,n do i=1,m ts(i,j,k,1)=ts1t(i,j) enddo enddo do j=1,n do i=1,m rr(i,j,k,2)=rr2t(i,j) enddo enddo do j=1,n do i=1,m tt(i,j,k,2)=tt2t(i,j) enddo enddo do j=1,n do i=1,m td(i,j,k,2)=td2t(i,j) enddo enddo do j=1,n do i=1,m rs(i,j,k,2)=rs2t(i,j) enddo enddo do j=1,n do i=1,m ts(i,j,k,2)=ts2t(i,j) enddo enddo 300 continue !-----flux calculations call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, & fclr,fall,fallu,falld,fsdir,fsdif) do k= 1, np+1 do j= 1, n do i= 1, m flx(i,j,k)=flx(i,j,k)+fall(i,j,k)*hk(ib) flxu(i,j,k)=flxu(i,j,k)+fallu(i,j,k)*hk(ib) flxd(i,j,k)=flxd(i,j,k)+falld(i,j,k)*hk(ib) enddo enddo do j= 1, n do i= 1, m flc(i,j,k)=flc(i,j,k)+fclr(i,j,k)*hk(ib) enddo enddo enddo !-----compute downward surface fluxes in the UV and par regions if(ib.lt.8) then do j=1,n do i=1,m fdiruv(i,j)=fdiruv(i,j)+fsdir(i,j)*hk(ib) fdifuv(i,j)=fdifuv(i,j)+fsdif(i,j)*hk(ib) enddo enddo else do j=1,n do i=1,m fdirpar(i,j)=fsdir(i,j)*hk(ib) fdifpar(i,j)=fsdif(i,j)*hk(ib) enddo enddo endif 100 continue end subroutine soluv !************************************************************************ subroutine solir (m,n,ndim,np,wh,overcast,cldwater, & cwp,taucld,reff,ict,icb,fcld,cosz, & taual,ssaal,asyal,csm,rsirbm,rsirdf, & flx,flc,flxu,flxd,fdirir,fdifir) !************************************************************************ ! compute solar flux in the infrared region. The spectrum is divided ! into three bands: ! ! band wavenumber(/cm) wavelength (micron) ! 1( 9) 14300-8200 0.70-1.22 ! 2(10) 8200-4400 1.22-2.27 ! 3(11) 4400-1000 2.27-10.0 ! !----- Input parameters: units size ! ! number of soundings in zonal direction (m) n/d 1 ! number of soundings in meridional direction (n) n/d 1 ! maximum number of soundings in n/d 1 ! meridional direction (ndim) ! number of atmospheric layers (np) n/d 1 ! layer scaled-water vapor content (wh) gm/cm^2 m*n*np ! option for scaling cloud optical thickness n/d 1 ! overcast="true" if scaling is NOT required ! overcast="fasle" if scaling is required ! input option for cloud optical thickness n/d 1 ! cldwater="true" if taucld is provided ! cldwater="false" if cwp is provided ! cloud water concentration (cwp) gm/m**2 m*n*np*2 ! index 1 for ice particles ! index 2 for liquid drops ! cloud optical thickness (taucld) n/d m*ndim*np*2 ! index 1 for ice paticles ! effective cloud-particle size (reff) micrometer m*ndim*np*2 ! index 1 for ice paticles ! index 2 for liquid particles ! level index separating high and n/d m*n ! middle clouds (ict) ! level index separating middle and n/d m*n ! low clouds (icb) ! cloud amount (fcld) fraction m*ndim*np ! aerosol optical thickness (taual) n/d m*ndim*np*11 ! aerosol single-scattering albedo (ssaal) n/d m*ndim*np*11 ! aerosol asymmetry factor (asyal) n/d m*ndim*np*11 ! cosecant of the solar zenith angle (csm) n/d m*n ! near ir surface albedo for beam fraction m*ndim ! radiation (rsirbm) ! near ir surface albedo for diffuse fraction m*ndim ! radiation (rsirdf) ! !---- temporary array ! ! scaled cloud optical thickness n/d m*n*np ! for beam radiation (tauclb) ! scaled cloud optical thickness n/d m*n*np ! for diffuse radiation (tauclf) ! !----- output (updated) parameters: ! ! all-sky flux (downward-upward) (flx) fraction m*ndim*(np+1) ! clear-sky flux (downward-upward) (flc) fraction m*ndim*(np+1) ! all-sky direct downward ir flux at ! the surface (fdirir) fraction m*ndim ! all-sky diffuse downward ir flux at ! the surface (fdifir) fraction m*ndim ! !********************************************************************** implicit none !********************************************************************** !-----input parameters integer m,n,ndim,np integer ict(m,ndim),icb(m,ndim) real cwp(m,n,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2) real fcld(m,ndim,np),cc(m,n,3),cosz(m,ndim) real rsirbm(m,ndim),rsirdf(m,ndim) real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11) real wh(m,n,np),csm(m,n) logical overcast,cldwater !-----output (updated) parameters real flx(m,ndim,np+1),flc(m,ndim,np+1) real flxu(m,ndim,np+1),flxd(m,ndim,np+1) real fdirir(m,ndim),fdifir(m,ndim) !-----static parameters integer nk,nband parameter (nk=10,nband=3) real xk(nk),hk(nband,nk),aib(nband,2),awb(nband,2) real aia(nband,3),awa(nband,3),aig(nband,3),awg(nband,3) !-----temporary array integer ib,iv,ik,i,j,k real tauclb(m,n,np),tauclf(m,n,np) real ssacl(m,n,np),asycl(m,n,np) real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2), & rs(m,n,np+1,2),ts(m,n,np+1,2) real fall(m,n,np+1),fclr(m,n,np+1) real fallu(m,n,np+1),falld(m,n,np+1) real fsdir(m,n),fsdif(m,n) real tauwv,tausto,ssatau,asysto,tauto,ssato,asyto real taux,reff1,reff2,w1,w2,g1,g2 real ssaclt(m,n),asyclt(m,n) real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n) real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n) !-----water vapor absorption coefficient for 10 k-intervals. ! unit: cm^2/gm data xk/ & 0.0010, 0.0133, 0.0422, 0.1334, 0.4217, & 1.334, 5.623, 31.62, 177.8, 1000.0/ !-----water vapor k-distribution function, ! the sum of hk is 0.52926. unit: fraction data hk/ & .20673,.08236,.01074, .03497,.01157,.00360, & .03011,.01133,.00411, .02260,.01143,.00421, & .01336,.01240,.00389, .00696,.01258,.00326, & .00441,.01381,.00499, .00115,.00650,.00465, & .00026,.00244,.00245, .00000,.00094,.00145/ !-----coefficients for computing the extinction coefficient of ! ice clouds from b=aib(*,1)+aib(*,2)/reff data aib/ & .000333, .000333, .000333, & 2.52, 2.52, 2.52/ !-----coefficients for computing the extinction coefficient of ! water clouds from b=awb(*,1)+awb(*,2)/reff data awb/ & -0.0101, -0.0166, -0.0339, & 1.72, 1.85, 2.16/ !-----coefficients for computing the single scattering albedo of ! ice clouds from ssa=1-(aia(*,1)+aia(*,2)*reff+aia(*,3)*reff**2) data aia/ & -.00000260, .00215346, .08938331, & .00000746, .00073709, .00299387, & .00000000,-.00000134,-.00001038/ !-----coefficients for computing the single scattering albedo of ! liquid clouds from ssa=1-(awa(*,1)+awa(*,2)*reff+awa(*,3)*reff**2) data awa/ & .00000007,-.00019934, .01209318, & .00000845, .00088757, .01784739, & -.00000004,-.00000650,-.00036910/ !-----coefficients for computing the asymmetry factor of ice clouds ! from asycl=aig(*,1)+aig(*,2)*reff+aig(*,3)*reff**2 data aig/ & .74935228, .76098937, .84090400, & .00119715, .00141864, .00126222, & -.00000367,-.00000396,-.00000385/ !-----coefficients for computing the asymmetry factor of liquid clouds ! from asycl=awg(*,1)+awg(*,2)*reff+awg(*,3)*reff**2 data awg/ & .79375035, .74513197, .83530748, & .00832441, .01370071, .00257181, & -.00023263,-.00038203, .00005519/ !-----initialize surface fluxes, reflectances, and transmittances. ! cc is the maximum cloud cover in each of the three cloud groups. do j= 1, n do i= 1, m fdirir(i,j)=0.0 fdifir(i,j)=0.0 rr(i,j,np+1,1)=rsirbm(i,j) rr(i,j,np+1,2)=rsirbm(i,j) rs(i,j,np+1,1)=rsirdf(i,j) rs(i,j,np+1,2)=rsirdf(i,j) td(i,j,np+1,1)=0.0 td(i,j,np+1,2)=0.0 tt(i,j,np+1,1)=0.0 tt(i,j,np+1,2)=0.0 ts(i,j,np+1,1)=0.0 ts(i,j,np+1,2)=0.0 cc(i,j,1)=0.0 cc(i,j,2)=0.0 cc(i,j,3)=0.0 enddo enddo !-----integration over spectral bands do 100 ib=1,nband iv=ib+8 !-----compute cloud optical thickness if (cldwater) then do k= 1, np do j= 1, n do i= 1, m taucld(i,j,k,1)=cwp(i,j,k,1)*(aib(ib,1) & +aib(ib,2)/reff(i,j,k,1)) taucld(i,j,k,2)=cwp(i,j,k,2)*(awb(ib,1) & +awb(ib,2)/reff(i,j,k,2)) enddo enddo enddo endif !-----options for scaling cloud optical thickness if (overcast) then do k= 1, np do j= 1, n do i= 1, m tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2) tauclf(i,j,k)=tauclb(i,j,k) enddo enddo enddo do k= 1, 3 do j= 1, n do i= 1, m cc(i,j,k)=1.0 enddo enddo enddo else !-----scale cloud optical thickness in each layer from taucld (with ! cloud amount fcld) to tauclb and tauclf (with cloud amount cc). ! tauclb is the scaled optical thickness for beam radiation and ! tauclf is for diffuse radiation. call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, & cc,tauclb,tauclf) endif !-----compute cloud single scattering albedo and asymmetry factor ! for a mixture of ice and liquid particles. do k= 1, np do j= 1, n do i= 1, m ssaclt(i,j)=1.0 asyclt(i,j)=1.0 taux=taucld(i,j,k,1)+taucld(i,j,k,2) if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then reff1=min(reff(i,j,k,1),130.) reff2=min(reff(i,j,k,2),20.0) w1=(1.-(aia(ib,1)+(aia(ib,2)+ & aia(ib,3)*reff1)*reff1))*taucld(i,j,k,1) w2=(1.-(awa(ib,1)+(awa(ib,2)+ & awa(ib,3)*reff2)*reff2))*taucld(i,j,k,2) ssaclt(i,j)=(w1+w2)/taux g1=(aig(ib,1)+(aig(ib,2)+aig(ib,3)*reff1)*reff1)*w1 g2=(awg(ib,1)+(awg(ib,2)+awg(ib,3)*reff2)*reff2)*w2 asyclt(i,j)=(g1+g2)/(w1+w2) endif enddo enddo do j=1,n do i=1,m ssacl(i,j,k)=ssaclt(i,j) enddo enddo do j=1,n do i=1,m asycl(i,j,k)=asyclt(i,j) enddo enddo enddo !-----integration over the k-distribution function do 200 ik=1,nk do 300 k= 1, np do j= 1, n do i= 1, m tauwv=xk(ik)*wh(i,j,k) !-----compute clear-sky optical thickness, single scattering albedo, ! and asymmetry factor. tausto=tauwv+taual(i,j,k,iv)+1.0e-8 ssatau=ssaal(i,j,k,iv)*taual(i,j,k,iv) asysto=asyal(i,j,k,iv)*ssaal(i,j,k,iv)*taual(i,j,k,iv) !-----compute reflectance and transmittance for cloudless layers tauto=tausto ssato=ssatau/tauto+1.0e-8 if (ssato .gt. 0.001) then ssato=min(ssato,0.999999) asyto=asysto/(ssato*tauto) !- for direct incident radiation call deledd (tauto,ssato,asyto,csm(i,j), & rr1t(i,j),tt1t(i,j),td1t(i,j)) !- for diffuse incident radiation call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j)) else td1t(i,j)=exp(-tauto*csm(i,j)) ts1t(i,j)=exp(-1.66*tauto) tt1t(i,j)=0.0 rr1t(i,j)=0.0 rs1t(i,j)=0.0 endif !-----compute reflectance and transmittance for cloud layers if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then rr2t(i,j)=rr1t(i,j) tt2t(i,j)=tt1t(i,j) td2t(i,j)=td1t(i,j) rs2t(i,j)=rs1t(i,j) ts2t(i,j)=ts1t(i,j) else !- for direct incident radiation tauto=tausto+tauclb(i,j,k) ssato=(ssatau+ssacl(i,j,k)*tauclb(i,j,k))/tauto+1.0e-8 ssato=min(ssato,0.999999) asyto=(asysto+asycl(i,j,k)*ssacl(i,j,k)*tauclb(i,j,k))/ & (ssato*tauto) call deledd (tauto,ssato,asyto,csm(i,j), & rr2t(i,j),tt2t(i,j),td2t(i,j)) !- for diffuse incident radiation tauto=tausto+tauclf(i,j,k) ssato=(ssatau+ssacl(i,j,k)*tauclf(i,j,k))/tauto+1.0e-8 ssato=min(ssato,0.999999) asyto=(asysto+asycl(i,j,k)*ssacl(i,j,k)*tauclf(i,j,k))/ & (ssato*tauto) call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j)) endif enddo enddo do j=1,n do i=1,m rr(i,j,k,1)=rr1t(i,j) enddo enddo do j=1,n do i=1,m tt(i,j,k,1)=tt1t(i,j) enddo enddo do j=1,n do i=1,m td(i,j,k,1)=td1t(i,j) enddo enddo do j=1,n do i=1,m rs(i,j,k,1)=rs1t(i,j) enddo enddo do j=1,n do i=1,m ts(i,j,k,1)=ts1t(i,j) enddo enddo do j=1,n do i=1,m rr(i,j,k,2)=rr2t(i,j) enddo enddo do j=1,n do i=1,m tt(i,j,k,2)=tt2t(i,j) enddo enddo do j=1,n do i=1,m td(i,j,k,2)=td2t(i,j) enddo enddo do j=1,n do i=1,m rs(i,j,k,2)=rs2t(i,j) enddo enddo do j=1,n do i=1,m ts(i,j,k,2)=ts2t(i,j) enddo enddo 300 continue !-----flux calculations call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, & fclr,fall,fallu,falld,fsdir,fsdif) do k= 1, np+1 do j= 1, n do i= 1, m flx(i,j,k) = flx(i,j,k)+fall(i,j,k)*hk(ib,ik) flxu(i,j,k) = flxu(i,j,k)+fallu(i,j,k)*hk(ib,ik) flxd(i,j,k) = flxd(i,j,k)+falld(i,j,k)*hk(ib,ik) enddo enddo do j= 1, n do i= 1, m flc(i,j,k) = flc(i,j,k)+fclr(i,j,k)*hk(ib,ik) enddo enddo enddo !-----compute downward surface fluxes in the ir region do j= 1, n do i= 1, m fdirir(i,j) = fdirir(i,j)+fsdir(i,j)*hk(ib,ik) fdifir(i,j) = fdifir(i,j)+fsdif(i,j)*hk(ib,ik) enddo enddo 200 continue 100 continue end subroutine solir !******************************************************************** subroutine cldscale (m,n,ndim,np,cosz,fcld,taucld,ict,icb, & cc,tauclb,tauclf) !******************************************************************** ! ! This subroutine computes the high, middle, and ! low cloud amounts and scales the cloud optical thickness. ! ! To simplify calculations in a cloudy atmosphere, clouds are ! grouped into high, middle and low clouds separated by the levels ! ict and icb (level 1 is the top of the model atmosphere). ! ! Within each of the three groups, clouds are assumed maximally ! overlapped, and the cloud cover (cc) of a group is the maximum ! cloud cover of all the layers in the group. The optical thickness ! (taucld) of a given layer is then scaled to new values (tauclb and ! tauclf) so that the layer reflectance corresponding to the cloud ! cover cc is the same as the original reflectance with optical ! thickness taucld and cloud cover fcld. ! !---input parameters ! ! number of grid intervals in zonal direction (m) ! number of grid intervals in meridional direction (n) ! maximum number of grid intervals in meridional direction (ndim) ! number of atmospheric layers (np) ! cosine of the solar zenith angle (cosz) ! fractional cloud cover (fcld) ! cloud optical thickness (taucld) ! index separating high and middle clouds (ict) ! index separating middle and low clouds (icb) ! !---output parameters ! ! fractional cover of high, middle, and low clouds (cc) ! scaled cloud optical thickness for beam radiation (tauclb) ! scaled cloud optical thickness for diffuse radiation (tauclf) ! !******************************************************************** implicit none !******************************************************************** !-----input parameters integer m,n,ndim,np integer ict(m,ndim),icb(m,ndim) real cosz(m,ndim),fcld(m,ndim,np),taucld(m,ndim,np,2) !-----output parameters real cc(m,n,3),tauclb(m,n,np),tauclf(m,n,np) !-----temporary variables integer i,j,k,im,it,ia,kk real fm,ft,fa,xai,taux !-----pre-computed table integer nm,nt,na parameter (nm=11,nt=9,na=11) real dm,dt,da,t1,caib(nm,nt,na),caif(nt,na) parameter (dm=0.1,dt=0.30103,da=0.1,t1=-0.9031) !-----include the pre-computed table of mcai for scaling the cloud optical ! thickness under the assumption that clouds are maximally overlapped ! ! caib is for scaling the cloud optical thickness for direct radiation ! caif is for scaling the cloud optical thickness for diffuse radiation data ((caib(1,i,j),j=1,11),i=1,9)/ & .000,0.068,0.140,0.216,0.298,0.385,0.481,0.586,0.705,0.840,1.000, & .000,0.052,0.106,0.166,0.230,0.302,0.383,0.478,0.595,0.752,1.000, & .000,0.038,0.078,0.120,0.166,0.218,0.276,0.346,0.438,0.582,1.000, & .000,0.030,0.060,0.092,0.126,0.164,0.206,0.255,0.322,0.442,1.000, & .000,0.025,0.051,0.078,0.106,0.136,0.170,0.209,0.266,0.462,1.000, & .000,0.023,0.046,0.070,0.095,0.122,0.150,0.187,0.278,0.577,1.000, & .000,0.022,0.043,0.066,0.089,0.114,0.141,0.187,0.354,0.603,1.000, & .000,0.021,0.042,0.063,0.086,0.108,0.135,0.214,0.349,0.565,1.000, & .000,0.021,0.041,0.062,0.083,0.105,0.134,0.202,0.302,0.479,1.000/ data ((caib(2,i,j),j=1,11),i=1,9)/ & .000,0.088,0.179,0.272,0.367,0.465,0.566,0.669,0.776,0.886,1.000, & .000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.749,0.870,1.000, & .000,0.065,0.134,0.207,0.286,0.372,0.466,0.572,0.692,0.831,1.000, & .000,0.049,0.102,0.158,0.221,0.290,0.370,0.465,0.583,0.745,1.000, & .000,0.037,0.076,0.118,0.165,0.217,0.278,0.354,0.459,0.638,1.000, & .000,0.030,0.061,0.094,0.130,0.171,0.221,0.286,0.398,0.631,1.000, & .000,0.026,0.052,0.081,0.111,0.146,0.189,0.259,0.407,0.643,1.000, & .000,0.023,0.047,0.072,0.098,0.129,0.170,0.250,0.387,0.598,1.000, & .000,0.022,0.044,0.066,0.090,0.118,0.156,0.224,0.328,0.508,1.000/ data ((caib(3,i,j),j=1,11),i=1,9)/ & .000,0.094,0.189,0.285,0.383,0.482,0.582,0.685,0.788,0.894,1.000, & .000,0.088,0.178,0.271,0.366,0.465,0.565,0.669,0.776,0.886,1.000, & .000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.750,0.870,1.000, & .000,0.066,0.134,0.209,0.289,0.375,0.470,0.577,0.697,0.835,1.000, & .000,0.050,0.104,0.163,0.227,0.300,0.383,0.483,0.606,0.770,1.000, & .000,0.038,0.080,0.125,0.175,0.233,0.302,0.391,0.518,0.710,1.000, & .000,0.031,0.064,0.100,0.141,0.188,0.249,0.336,0.476,0.689,1.000, & .000,0.026,0.054,0.084,0.118,0.158,0.213,0.298,0.433,0.638,1.000, & .000,0.023,0.048,0.074,0.102,0.136,0.182,0.254,0.360,0.542,1.000/ data ((caib(4,i,j),j=1,11),i=1,9)/ & .000,0.096,0.193,0.290,0.389,0.488,0.589,0.690,0.792,0.896,1.000, & .000,0.092,0.186,0.281,0.378,0.477,0.578,0.680,0.785,0.891,1.000, & .000,0.086,0.174,0.264,0.358,0.455,0.556,0.660,0.769,0.882,1.000, & .000,0.074,0.153,0.235,0.323,0.416,0.514,0.622,0.737,0.862,1.000, & .000,0.061,0.126,0.195,0.271,0.355,0.449,0.555,0.678,0.823,1.000, & .000,0.047,0.098,0.153,0.215,0.286,0.370,0.471,0.600,0.770,1.000, & .000,0.037,0.077,0.120,0.170,0.230,0.303,0.401,0.537,0.729,1.000, & .000,0.030,0.062,0.098,0.138,0.187,0.252,0.343,0.476,0.673,1.000, & .000,0.026,0.053,0.082,0.114,0.154,0.207,0.282,0.391,0.574,1.000/ data ((caib(5,i,j),j=1,11),i=1,9)/ & .000,0.097,0.194,0.293,0.392,0.492,0.592,0.693,0.794,0.897,1.000, & .000,0.094,0.190,0.286,0.384,0.483,0.584,0.686,0.789,0.894,1.000, & .000,0.090,0.181,0.274,0.370,0.468,0.569,0.672,0.778,0.887,1.000, & .000,0.081,0.165,0.252,0.343,0.439,0.539,0.645,0.757,0.874,1.000, & .000,0.069,0.142,0.218,0.302,0.392,0.490,0.598,0.717,0.850,1.000, & .000,0.054,0.114,0.178,0.250,0.330,0.422,0.529,0.656,0.810,1.000, & .000,0.042,0.090,0.141,0.200,0.269,0.351,0.455,0.589,0.764,1.000, & .000,0.034,0.070,0.112,0.159,0.217,0.289,0.384,0.515,0.703,1.000, & .000,0.028,0.058,0.090,0.128,0.174,0.231,0.309,0.420,0.602,1.000/ data ((caib(6,i,j),j=1,11),i=1,9)/ & .000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, & .000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, & .000,0.092,0.186,0.281,0.378,0.477,0.577,0.680,0.784,0.891,1.000, & .000,0.086,0.174,0.264,0.358,0.455,0.556,0.661,0.769,0.882,1.000, & .000,0.075,0.154,0.237,0.325,0.419,0.518,0.626,0.741,0.865,1.000, & .000,0.062,0.129,0.201,0.279,0.366,0.462,0.571,0.694,0.836,1.000, & .000,0.049,0.102,0.162,0.229,0.305,0.394,0.501,0.631,0.793,1.000, & .000,0.038,0.080,0.127,0.182,0.245,0.323,0.422,0.550,0.730,1.000, & .000,0.030,0.064,0.100,0.142,0.192,0.254,0.334,0.448,0.627,1.000/ data ((caib(7,i,j),j=1,11),i=1,9)/ & .000,0.098,0.198,0.296,0.396,0.496,0.596,0.696,0.797,0.898,1.000, & .000,0.097,0.194,0.293,0.392,0.491,0.591,0.693,0.794,0.897,1.000, & .000,0.094,0.190,0.286,0.384,0.483,0.583,0.686,0.789,0.894,1.000, & .000,0.089,0.180,0.274,0.369,0.467,0.568,0.672,0.778,0.887,1.000, & .000,0.081,0.165,0.252,0.344,0.440,0.541,0.646,0.758,0.875,1.000, & .000,0.069,0.142,0.221,0.306,0.397,0.496,0.604,0.722,0.854,1.000, & .000,0.056,0.116,0.182,0.256,0.338,0.432,0.540,0.666,0.816,1.000, & .000,0.043,0.090,0.143,0.203,0.273,0.355,0.455,0.583,0.754,1.000, & .000,0.034,0.070,0.111,0.157,0.210,0.276,0.359,0.474,0.650,1.000/ data ((caib(8,i,j),j=1,11),i=1,9)/ & .000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, & .000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, & .000,0.096,0.193,0.290,0.390,0.489,0.589,0.690,0.793,0.896,1.000, & .000,0.093,0.186,0.282,0.379,0.478,0.578,0.681,0.786,0.892,1.000, & .000,0.086,0.175,0.266,0.361,0.458,0.558,0.663,0.771,0.883,1.000, & .000,0.076,0.156,0.240,0.330,0.423,0.523,0.630,0.744,0.867,1.000, & .000,0.063,0.130,0.203,0.282,0.369,0.465,0.572,0.694,0.834,1.000, & .000,0.049,0.102,0.161,0.226,0.299,0.385,0.486,0.611,0.774,1.000, & .000,0.038,0.078,0.122,0.172,0.229,0.297,0.382,0.498,0.672,1.000/ data ((caib(9,i,j),j=1,11),i=1,9)/ & .000,0.099,0.199,0.298,0.398,0.498,0.598,0.699,0.799,0.899,1.000, & .000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, & .000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, & .000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, & .000,0.092,0.185,0.280,0.376,0.474,0.575,0.678,0.782,0.890,1.000, & .000,0.084,0.170,0.259,0.351,0.447,0.547,0.652,0.762,0.878,1.000, & .000,0.071,0.146,0.224,0.308,0.398,0.494,0.601,0.718,0.850,1.000, & .000,0.056,0.114,0.178,0.248,0.325,0.412,0.514,0.638,0.793,1.000, & .000,0.042,0.086,0.134,0.186,0.246,0.318,0.405,0.521,0.691,1.000/ data ((caib(10,i,j),j=1,11),i=1,9)/ & .000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, & .000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, & .000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, & .000,0.100,0.199,0.298,0.398,0.498,0.598,0.698,0.798,0.899,1.000, & .000,0.098,0.196,0.294,0.392,0.491,0.590,0.691,0.793,0.896,1.000, & .000,0.092,0.185,0.278,0.374,0.470,0.570,0.671,0.777,0.886,1.000, & .000,0.081,0.162,0.246,0.333,0.424,0.521,0.625,0.738,0.862,1.000, & .000,0.063,0.128,0.196,0.270,0.349,0.438,0.540,0.661,0.809,1.000, & .000,0.046,0.094,0.146,0.202,0.264,0.337,0.426,0.542,0.710,1.000/ data ((caib(11,i,j),j=1,11),i=1,9)/ & .000,0.101,0.202,0.302,0.402,0.502,0.602,0.702,0.802,0.901,1.000, & .000,0.102,0.202,0.303,0.404,0.504,0.604,0.703,0.802,0.902,1.000, & .000,0.102,0.205,0.306,0.406,0.506,0.606,0.706,0.804,0.902,1.000, & .000,0.104,0.207,0.309,0.410,0.510,0.609,0.707,0.805,0.902,1.000, & .000,0.106,0.208,0.309,0.409,0.508,0.606,0.705,0.803,0.902,1.000, & .000,0.102,0.202,0.298,0.395,0.493,0.590,0.690,0.790,0.894,1.000, & .000,0.091,0.179,0.267,0.357,0.449,0.545,0.647,0.755,0.872,1.000, & .000,0.073,0.142,0.214,0.290,0.372,0.462,0.563,0.681,0.822,1.000, & .000,0.053,0.104,0.158,0.217,0.281,0.356,0.446,0.562,0.726,1.000/ data ((caif(i,j),j=1,11),i=1,9)/ & .000,0.099,0.198,0.297,0.397,0.496,0.597,0.697,0.798,0.899,1.000, & .000,0.098,0.196,0.294,0.394,0.494,0.594,0.694,0.796,0.898,1.000, & .000,0.096,0.192,0.290,0.388,0.487,0.587,0.689,0.792,0.895,1.000, & .000,0.092,0.185,0.280,0.376,0.476,0.576,0.678,0.783,0.890,1.000, & .000,0.085,0.173,0.263,0.357,0.454,0.555,0.659,0.768,0.881,1.000, & .000,0.076,0.154,0.237,0.324,0.418,0.517,0.624,0.738,0.864,1.000, & .000,0.063,0.131,0.203,0.281,0.366,0.461,0.567,0.688,0.830,1.000, & .000,0.052,0.107,0.166,0.232,0.305,0.389,0.488,0.610,0.770,1.000, & .000,0.043,0.088,0.136,0.189,0.248,0.317,0.400,0.510,0.675,1.000/ !-----clouds within each of the high, middle, and low clouds are assumed ! to be maximally overlapped, and the cloud cover (cc) for a group ! (high, middle, or low) is the maximum cloud cover of all the layers ! within a group do j=1,n do i=1,m cc(i,j,1)=0.0 cc(i,j,2)=0.0 cc(i,j,3)=0.0 enddo enddo do j=1,n do i=1,m do k=1,ict(i,j)-1 cc(i,j,1)=max(cc(i,j,1),fcld(i,j,k)) enddo enddo enddo do j=1,n do i=1,m do k=ict(i,j),icb(i,j)-1 cc(i,j,2)=max(cc(i,j,2),fcld(i,j,k)) enddo enddo enddo do j=1,n do i=1,m do k=icb(i,j),np cc(i,j,3)=max(cc(i,j,3),fcld(i,j,k)) enddo enddo enddo !-----scale the cloud optical thickness. ! taucld(i,j,k,1) is the optical thickness for ice particles, and ! taucld(i,j,k,2) is the optical thickness for liquid particles. do j=1,n do i=1,m do k=1,np if(k.lt.ict(i,j)) then kk=1 elseif(k.ge.ict(i,j) .and. k.lt.icb(i,j)) then kk=2 else kk=3 endif tauclb(i,j,k) = 0.0 tauclf(i,j,k) = 0.0 taux=taucld(i,j,k,1)+taucld(i,j,k,2) if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then !-----normalize cloud cover fa=fcld(i,j,k)/cc(i,j,kk) !-----table look-up taux=min(taux,32.) fm=cosz(i,j)/dm ft=(log10(taux)-t1)/dt fa=fa/da im=int(fm+1.5) it=int(ft+1.5) ia=int(fa+1.5) im=max(im,2) it=max(it,2) ia=max(ia,2) im=min(im,nm-1) it=min(it,nt-1) ia=min(ia,na-1) fm=fm-float(im-1) ft=ft-float(it-1) fa=fa-float(ia-1) !-----scale cloud optical thickness for beam radiation. ! the scaling factor, xai, is a function of the solar zenith ! angle, optical thickness, and cloud cover. xai= (-caib(im-1,it,ia)*(1.-fm)+ & caib(im+1,it,ia)*(1.+fm))*fm*.5+caib(im,it,ia)*(1.-fm*fm) xai=xai+(-caib(im,it-1,ia)*(1.-ft)+ & caib(im,it+1,ia)*(1.+ft))*ft*.5+caib(im,it,ia)*(1.-ft*ft) xai=xai+(-caib(im,it,ia-1)*(1.-fa)+ & caib(im,it,ia+1)*(1.+fa))*fa*.5+caib(im,it,ia)*(1.-fa*fa) xai= xai-2.*caib(im,it,ia) xai=max(xai,0.0) tauclb(i,j,k) = taux*xai !-----scale cloud optical thickness for diffuse radiation. ! the scaling factor, xai, is a function of the cloud optical ! thickness and cover but not the solar zenith angle. xai= (-caif(it-1,ia)*(1.-ft)+ & caif(it+1,ia)*(1.+ft))*ft*.5+caif(it,ia)*(1.-ft*ft) xai=xai+(-caif(it,ia-1)*(1.-fa)+ & caif(it,ia+1)*(1.+fa))*fa*.5+caif(it,ia)*(1.-fa*fa) xai= xai-caif(it,ia) xai=max(xai,0.0) tauclf(i,j,k) = taux*xai endif enddo enddo enddo end subroutine cldscale !********************************************************************* subroutine deledd(tau,ssc,g0,csm,rr,tt,td) !********************************************************************* ! !-----uses the delta-eddington approximation to compute the ! bulk scattering properties of a single layer ! coded following King and Harshvardhan (JAS, 1986) ! ! inputs: ! ! tau: the effective optical thickness ! ssc: the effective single scattering albedo ! g0: the effective asymmetry factor ! csm: the effective secant of the zenith angle ! ! outputs: ! ! rr: the layer reflection of the direct beam ! tt: the layer diffuse transmission of the direct beam ! td: the layer direct transmission of the direct beam ! !********************************************************************* implicit none !********************************************************************* real zero,one,two,three,four,fourth,seven,thresh parameter (one =1., three=3.) parameter (two =2., seven=7.) parameter (four=4., fourth=.25) parameter (zero=0., thresh=1.e-8) !-----input parameters real tau,ssc,g0,csm !-----output parameters real rr,tt,td !-----temporary parameters real zth,ff,xx,taup,sscp,gp,gm1,gm2,gm3,akk,alf1,alf2, & all,bll,st7,st8,cll,dll,fll,ell,st1,st2,st3,st4 !--------------------------------------------------------------------- zth = one / csm ! delta-eddington scaling of single scattering albedo, ! optical thickness, and asymmetry factor, ! K & H eqs(27-29) ff = g0*g0 xx = one-ff*ssc taup= tau*xx sscp= ssc*(one-ff)/xx gp = g0/(one+g0) ! gamma1, gamma2, and gamma3. see table 2 and eq(26) K & H ! ssc and gp are the d-s single scattering ! albedo and asymmetry factor. xx = three*gp gm1 = (seven - sscp*(four+xx))*fourth gm2 = -(one - sscp*(four-xx))*fourth ! akk is k as defined in eq(25) of K & H akk = sqrt((gm1+gm2)*(gm1-gm2)) xx = akk * zth st7 = one - xx st8 = one + xx st3 = st7 * st8 if (abs(st3) .lt. thresh) then zth = zth + 0.001 xx = akk * zth st7 = one - xx st8 = one + xx st3 = st7 * st8 endif ! extinction of the direct beam transmission td = exp(-taup/zth) ! alf1 and alf2 are alpha1 and alpha2 from eqs (23) & (24) of K & H gm3 = (two - zth*three*gp)*fourth xx = gm1 - gm2 alf1 = gm1 - gm3 * xx alf2 = gm2 + gm3 * xx ! all is last term in eq(21) of K & H ! bll is last term in eq(22) of K & H xx = akk * two all = (gm3 - alf2 * zth )*xx*td bll = (one - gm3 + alf1*zth)*xx xx = akk * gm3 cll = (alf2 + xx) * st7 dll = (alf2 - xx) * st8 xx = akk * (one-gm3) fll = (alf1 + xx) * st8 ell = (alf1 - xx) * st7 st2 = exp(-akk*taup) st4 = st2 * st2 st1 = sscp / ((akk+gm1 + (akk-gm1)*st4) * st3) ! rr is r-hat of eq(21) of K & H ! tt is diffuse part of t-hat of eq(22) of K & H rr = ( cll-dll*st4 -all*st2)*st1 tt = - ((fll-ell*st4)*td-bll*st2)*st1 rr = max(rr,zero) tt = max(tt,zero) end subroutine deledd !********************************************************************* subroutine sagpol(tau,ssc,g0,rll,tll) !********************************************************************* !-----transmittance (tll) and reflectance (rll) of diffuse radiation ! follows Sagan and Pollock (JGR, 1967). ! also, eq.(31) of Lacis and Hansen (JAS, 1974). ! !-----input parameters: ! ! tau: the effective optical thickness ! ssc: the effective single scattering albedo ! g0: the effective asymmetry factor ! !-----output parameters: ! ! rll: the layer reflection of diffuse radiation ! tll: the layer transmission of diffuse radiation ! !********************************************************************* implicit none !********************************************************************* real one,three,four parameter (one=1., three=3., four=4.) !-----output parameters: real tau,ssc,g0 !-----output parameters: real rll,tll !-----temporary arrays real xx,uuu,ttt,emt,up1,um1,st1 xx = one-ssc*g0 uuu = sqrt( xx/(one-ssc)) ttt = sqrt( xx*(one-ssc)*three )*tau emt = exp(-ttt) up1 = uuu + one um1 = uuu - one xx = um1*emt st1 = one / ((up1+xx) * (up1-xx)) rll = up1*um1*(one-emt*emt)*st1 tll = uuu*four*emt *st1 end subroutine sagpol !******************************************************************* subroutine cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts,& fclr,fall,fallu,falld,fsdir,fsdif) !******************************************************************* ! compute upward and downward fluxes using a two-stream adding method ! following equations (3)-(5) of Chou (1992, JAS). ! ! clouds are grouped into high, middle, and low clouds which are ! assumed randomly overlapped. It involves eight sets of calculations. ! In each set of calculations, each atmospheric layer is homogeneous, ! either totally filled with clouds or without clouds. ! input parameters: ! ! m: number of soundings in zonal direction ! n: number of soundings in meridional direction ! np: number of atmospheric layers ! ict: the level separating high and middle clouds ! icb: the level separating middle and low clouds ! cc: effective cloud covers for high, middle and low clouds ! tt: diffuse transmission of a layer illuminated by beam radiation ! td: direct beam tranmssion ! ts: transmission of a layer illuminated by diffuse radiation ! rr: reflection of a layer illuminated by beam radiation ! rs: reflection of a layer illuminated by diffuse radiation ! ! output parameters: ! ! fclr: clear-sky flux (downward minus upward) ! fall: all-sky flux (downward minus upward) ! fsdir: surface direct downward flux ! fsdif: surface diffuse downward flux ! !*********************************************************************c implicit none !*********************************************************************c !-----input parameters integer m,n,np integer ict(m,n),icb(m,n) real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2) real rs(m,n,np+1,2),ts(m,n,np+1,2) real cc(m,n,3) logical overcast !-----temporary array integer i,j,k,ih,im,is,itm real rra(m,n,np+1,2,2),tta(m,n,np+1,2,2),tda(m,n,np+1,2,2) real rsa(m,n,np+1,2,2),rxa(m,n,np+1,2,2) real ch(m,n),cm(m,n),ct(m,n),flxdn(m,n,np+1) real flxdnu(m,n,np+1),flxdnd(m,n,np+1) real fdndir(m,n),fdndif(m,n),fupdif real denm,xx !-----output parameters real fclr(m,n,np+1),fall(m,n,np+1) real fallu(m,n,np+1),falld(m,n,np+1) real fsdir(m,n),fsdif(m,n) !-----initialize all-sky flux (fall) and surface downward fluxes do k=1,np+1 do j=1,n do i=1,m fclr(i,j,k)=0.0 fall(i,j,k)=0.0 fallu(i,j,k)=0.0 falld(i,j,k)=0.0 enddo enddo enddo do j=1,n do i=1,m fsdir(i,j)=0.0 fsdif(i,j)=0.0 enddo enddo !-----compute transmittances and reflectances for a composite of ! layers. layers are added one at a time, going down from the top. ! tda is the composite transmittance illuminated by beam radiation ! tta is the composite diffuse transmittance illuminated by ! beam radiation ! rsa is the composite reflectance illuminated from below ! by diffuse radiation ! tta and rsa are computed from eqs. (4b) and (3b) of Chou itm=1 !-----if overcas.=.true., set itm=2, and only one set of fluxes is computed if (overcast) itm=2 !-----for high clouds. indices 1 and 2 denote clear and cloudy ! situations, respectively. do 10 ih=itm,2 do j= 1, n do i= 1, m tda(i,j,1,ih,1)=td(i,j,1,ih) tta(i,j,1,ih,1)=tt(i,j,1,ih) rsa(i,j,1,ih,1)=rs(i,j,1,ih) tda(i,j,1,ih,2)=td(i,j,1,ih) tta(i,j,1,ih,2)=tt(i,j,1,ih) rsa(i,j,1,ih,2)=rs(i,j,1,ih) enddo enddo do j= 1, n do i= 1, m do k= 2, ict(i,j)-1 denm = ts(i,j,k,ih)/( 1.-rsa(i,j,k-1,ih,1)*rs(i,j,k,ih)) tda(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*td(i,j,k,ih) tta(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*tt(i,j,k,ih) & +(tda(i,j,k-1,ih,1)*rr(i,j,k,ih) & *rsa(i,j,k-1,ih,1)+tta(i,j,k-1,ih,1))*denm rsa(i,j,k,ih,1)= rs(i,j,k,ih)+ts(i,j,k,ih) & *rsa(i,j,k-1,ih,1)*denm tda(i,j,k,ih,2)= tda(i,j,k,ih,1) tta(i,j,k,ih,2)= tta(i,j,k,ih,1) rsa(i,j,k,ih,2)= rsa(i,j,k,ih,1) enddo enddo enddo !-----for middle clouds do 10 im=itm,2 do j= 1, n do i= 1, m do k= ict(i,j), icb(i,j)-1 denm = ts(i,j,k,im)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,im)) tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,im) tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,im) & +(tda(i,j,k-1,ih,im)*rr(i,j,k,im) & *rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))*denm rsa(i,j,k,ih,im)= rs(i,j,k,im)+ts(i,j,k,im) & *rsa(i,j,k-1,ih,im)*denm enddo enddo enddo 10 continue !-----layers are added one at a time, going up from the surface. ! rra is the composite reflectance illuminated by beam radiation ! rxa is the composite reflectance illuminated from above ! by diffuse radiation ! rra and rxa are computed from eqs. (4a) and (3a) of Chou !-----for the low clouds do 20 is=itm,2 do j= 1, n do i= 1, m rra(i,j,np+1,1,is)=rr(i,j,np+1,is) rxa(i,j,np+1,1,is)=rs(i,j,np+1,is) rra(i,j,np+1,2,is)=rr(i,j,np+1,is) rxa(i,j,np+1,2,is)=rs(i,j,np+1,is) enddo enddo do j= 1, n do i= 1, m do k=np,icb(i,j),-1 denm=ts(i,j,k,is)/( 1.-rs(i,j,k,is)*rxa(i,j,k+1,1,is) ) rra(i,j,k,1,is)=rr(i,j,k,is)+(td(i,j,k,is) & *rra(i,j,k+1,1,is)+tt(i,j,k,is)*rxa(i,j,k+1,1,is))*denm rxa(i,j,k,1,is)= rs(i,j,k,is)+ts(i,j,k,is) & *rxa(i,j,k+1,1,is)*denm rra(i,j,k,2,is)=rra(i,j,k,1,is) rxa(i,j,k,2,is)=rxa(i,j,k,1,is) enddo enddo enddo !-----for middle clouds do 20 im=itm,2 do j= 1, n do i= 1, m do k= icb(i,j)-1,ict(i,j),-1 denm=ts(i,j,k,im)/( 1.-rs(i,j,k,im)*rxa(i,j,k+1,im,is) ) rra(i,j,k,im,is)= rr(i,j,k,im)+(td(i,j,k,im) & *rra(i,j,k+1,im,is)+tt(i,j,k,im)*rxa(i,j,k+1,im,is))*denm rxa(i,j,k,im,is)= rs(i,j,k,im)+ts(i,j,k,im) & *rxa(i,j,k+1,im,is)*denm enddo enddo enddo 20 continue !-----integration over eight sky situations. ! ih, im, is denotes high, middle and low cloud groups. do 100 ih=itm,2 !-----clear portion if(ih.eq.1) then do j=1,n do i=1,m ch(i,j)=1.0-cc(i,j,1) enddo enddo else !-----cloudy portion do j=1,n do i=1,m ch(i,j)=cc(i,j,1) enddo enddo endif do 100 im=itm,2 !-----clear portion if(im.eq.1) then do j=1,n do i=1,m cm(i,j)=ch(i,j)*(1.0-cc(i,j,2)) enddo enddo else !-----cloudy portion do j=1,n do i=1,m cm(i,j)=ch(i,j)*cc(i,j,2) enddo enddo endif do 100 is=itm,2 !-----clear portion if(is.eq.1) then do j=1,n do i=1,m ct(i,j)=cm(i,j)*(1.0-cc(i,j,3)) enddo enddo else !-----cloudy portion do j=1,n do i=1,m ct(i,j)=cm(i,j)*cc(i,j,3) enddo enddo endif !-----add one layer at a time, going down. do j= 1, n do i= 1, m do k= icb(i,j), np denm = ts(i,j,k,is)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,is) ) tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,is) tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,is) & +(tda(i,j,k-1,ih,im)*rr(i,j,k,is) & *rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))*denm rsa(i,j,k,ih,im)= rs(i,j,k,is)+ts(i,j,k,is) & *rsa(i,j,k-1,ih,im)*denm enddo enddo enddo !-----add one layer at a time, going up. do j= 1, n do i= 1, m do k= ict(i,j)-1,1,-1 denm =ts(i,j,k,ih)/(1.-rs(i,j,k,ih)*rxa(i,j,k+1,im,is)) rra(i,j,k,im,is)= rr(i,j,k,ih)+(td(i,j,k,ih) & *rra(i,j,k+1,im,is)+tt(i,j,k,ih)*rxa(i,j,k+1,im,is))*denm rxa(i,j,k,im,is)= rs(i,j,k,ih)+ts(i,j,k,ih) & *rxa(i,j,k+1,im,is)*denm enddo enddo enddo !-----compute fluxes following eq (5) of Chou (1992) ! fdndir is the direct downward flux ! fdndif is the diffuse downward flux ! fupdif is the diffuse upward flux do k=2,np+1 do j=1, n do i=1, m denm= 1./(1.- rxa(i,j,k,im,is)*rsa(i,j,k-1,ih,im)) fdndir(i,j)= tda(i,j,k-1,ih,im) xx = tda(i,j,k-1,ih,im)*rra(i,j,k,im,is) fdndif(i,j)= (xx*rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))*denm fupdif= (xx+tta(i,j,k-1,ih,im)*rxa(i,j,k,im,is))*denm flxdn(i,j,k)=fdndir(i,j)+fdndif(i,j)-fupdif flxdnu(i,j,k)=-fupdif flxdnd(i,j,k)=fdndir(i,j)+fdndif(i,j) enddo enddo enddo do j=1, n do i=1, m flxdn(i,j,1)=1.0-rra(i,j,1,im,is) flxdnu(i,j,1)=-rra(i,j,1,im,is) flxdnd(i,j,1)=1.0 enddo enddo !-----summation of fluxes over all (eight) sky situations. do k=1,np+1 do j=1,n do i=1,m if(ih.eq.1 .and. im.eq.1 .and. is.eq.1) then fclr(i,j,k)=flxdn(i,j,k) endif fall(i,j,k)=fall(i,j,k)+flxdn(i,j,k)*ct(i,j) fallu(i,j,k)=fallu(i,j,k)+flxdnu(i,j,k)*ct(i,j) falld(i,j,k)=falld(i,j,k)+flxdnd(i,j,k)*ct(i,j) enddo enddo enddo do j=1,n do i=1,m fsdir(i,j)=fsdir(i,j)+fdndir(i,j)*ct(i,j) fsdif(i,j)=fsdif(i,j)+fdndif(i,j)*ct(i,j) enddo enddo 100 continue end subroutine cldflx !***************************************************************** subroutine flxco2(m,n,np,swc,swh,csm,df) !***************************************************************** !-----compute the reduction of clear-sky downward solar flux ! due to co2 absorption. implicit none !-----input parameters integer m,n,np real csm(m,n),swc(m,n,np+1),swh(m,n,np+1),cah(22,19) !-----output (undated) parameter real df(m,n,np+1) !-----temporary array integer i,j,k,ic,iw real xx,clog,wlog,dc,dw,x1,x2,y2 !******************************************************************** !-----include co2 look-up table data ((cah(i,j),i=1,22),j= 1, 5)/ & 0.9923, 0.9922, 0.9921, 0.9920, 0.9916, 0.9910, 0.9899, 0.9882, & 0.9856, 0.9818, 0.9761, 0.9678, 0.9558, 0.9395, 0.9188, 0.8945, & 0.8675, 0.8376, 0.8029, 0.7621, 0.7154, 0.6647, 0.9876, 0.9876, & 0.9875, 0.9873, 0.9870, 0.9864, 0.9854, 0.9837, 0.9811, 0.9773, & 0.9718, 0.9636, 0.9518, 0.9358, 0.9153, 0.8913, 0.8647, 0.8350, & 0.8005, 0.7599, 0.7133, 0.6627, 0.9808, 0.9807, 0.9806, 0.9805, & 0.9802, 0.9796, 0.9786, 0.9769, 0.9744, 0.9707, 0.9653, 0.9573, & 0.9459, 0.9302, 0.9102, 0.8866, 0.8604, 0.8311, 0.7969, 0.7565, & 0.7101, 0.6596, 0.9708, 0.9708, 0.9707, 0.9705, 0.9702, 0.9697, & 0.9687, 0.9671, 0.9647, 0.9612, 0.9560, 0.9483, 0.9372, 0.9221, & 0.9027, 0.8798, 0.8542, 0.8253, 0.7916, 0.7515, 0.7054, 0.6551, & 0.9568, 0.9568, 0.9567, 0.9565, 0.9562, 0.9557, 0.9548, 0.9533, & 0.9510, 0.9477, 0.9428, 0.9355, 0.9250, 0.9106, 0.8921, 0.8700, & 0.8452, 0.8171, 0.7839, 0.7443, 0.6986, 0.6486/ data ((cah(i,j),i=1,22),j= 6,10)/ & 0.9377, 0.9377, 0.9376, 0.9375, 0.9372, 0.9367, 0.9359, 0.9345, & 0.9324, 0.9294, 0.9248, 0.9181, 0.9083, 0.8948, 0.8774, 0.8565, & 0.8328, 0.8055, 0.7731, 0.7342, 0.6890, 0.6395, 0.9126, 0.9126, & 0.9125, 0.9124, 0.9121, 0.9117, 0.9110, 0.9098, 0.9079, 0.9052, & 0.9012, 0.8951, 0.8862, 0.8739, 0.8579, 0.8385, 0.8161, 0.7900, & 0.7585, 0.7205, 0.6760, 0.6270, 0.8809, 0.8809, 0.8808, 0.8807, & 0.8805, 0.8802, 0.8796, 0.8786, 0.8770, 0.8747, 0.8712, 0.8659, & 0.8582, 0.8473, 0.8329, 0.8153, 0.7945, 0.7697, 0.7394, 0.7024, & 0.6588, 0.6105, 0.8427, 0.8427, 0.8427, 0.8426, 0.8424, 0.8422, & 0.8417, 0.8409, 0.8397, 0.8378, 0.8350, 0.8306, 0.8241, 0.8148, & 0.8023, 0.7866, 0.7676, 0.7444, 0.7154, 0.6796, 0.6370, 0.5897, & 0.7990, 0.7990, 0.7990, 0.7989, 0.7988, 0.7987, 0.7983, 0.7978, & 0.7969, 0.7955, 0.7933, 0.7899, 0.7846, 0.7769, 0.7664, 0.7528, & 0.7357, 0.7141, 0.6866, 0.6520, 0.6108, 0.5646/ data ((cah(i,j),i=1,22),j=11,15)/ & 0.7515, 0.7515, 0.7515, 0.7515, 0.7514, 0.7513, 0.7511, 0.7507, & 0.7501, 0.7491, 0.7476, 0.7450, 0.7409, 0.7347, 0.7261, 0.7144, & 0.6992, 0.6793, 0.6533, 0.6203, 0.5805, 0.5357, 0.7020, 0.7020, & 0.7020, 0.7019, 0.7019, 0.7018, 0.7017, 0.7015, 0.7011, 0.7005, & 0.6993, 0.6974, 0.6943, 0.6894, 0.6823, 0.6723, 0.6588, 0.6406, & 0.6161, 0.5847, 0.5466, 0.5034, 0.6518, 0.6518, 0.6518, 0.6518, & 0.6518, 0.6517, 0.6517, 0.6515, 0.6513, 0.6508, 0.6500, 0.6485, & 0.6459, 0.6419, 0.6359, 0.6273, 0.6151, 0.5983, 0.5755, 0.5458, & 0.5095, 0.4681, 0.6017, 0.6017, 0.6017, 0.6017, 0.6016, 0.6016, & 0.6016, 0.6015, 0.6013, 0.6009, 0.6002, 0.5989, 0.5967, 0.5932, & 0.5879, 0.5801, 0.5691, 0.5535, 0.5322, 0.5043, 0.4700, 0.4308, & 0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5517, 0.5516, & 0.5514, 0.5511, 0.5505, 0.5493, 0.5473, 0.5441, 0.5393, 0.5322, & 0.5220, 0.5076, 0.4878, 0.4617, 0.4297, 0.3929/ data ((cah(i,j),i=1,22),j=16,19)/ & 0.5031, 0.5031, 0.5031, 0.5031, 0.5031, 0.5030, 0.5030, 0.5029, & 0.5028, 0.5025, 0.5019, 0.5008, 0.4990, 0.4960, 0.4916, 0.4850, & 0.4757, 0.4624, 0.4441, 0.4201, 0.3904, 0.3564, 0.4565, 0.4565, & 0.4565, 0.4564, 0.4564, 0.4564, 0.4564, 0.4563, 0.4562, 0.4559, & 0.4553, 0.4544, 0.4527, 0.4500, 0.4460, 0.4400, 0.4315, 0.4194, & 0.4028, 0.3809, 0.3538, 0.3227, 0.4122, 0.4122, 0.4122, 0.4122, & 0.4122, 0.4122, 0.4122, 0.4121, 0.4120, 0.4117, 0.4112, 0.4104, & 0.4089, 0.4065, 0.4029, 0.3976, 0.3900, 0.3792, 0.3643, 0.3447, & 0.3203, 0.2923, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, & 0.3695, 0.3695, 0.3694, 0.3691, 0.3687, 0.3680, 0.3667, 0.3647, & 0.3615, 0.3570, 0.3504, 0.3409, 0.3279, 0.3106, 0.2892, 0.2642/ !******************************************************************** !-----table look-up for the reduction of clear-sky solar ! radiation due to co2. The fraction 0.0343 is the ! extraterrestrial solar flux in the co2 bands. do k= 2, np+1 do j= 1, n do i= 1, m xx=1./.3 clog=log10(swc(i,j,k)*csm(i,j)) wlog=log10(swh(i,j,k)*csm(i,j)) ic=int( (clog+3.15)*xx+1.) iw=int( (wlog+4.15)*xx+1.) if(ic.lt.2)ic=2 if(iw.lt.2)iw=2 if(ic.gt.22)ic=22 if(iw.gt.19)iw=19 dc=clog-float(ic-2)*.3+3. dw=wlog-float(iw-2)*.3+4. x1=cah(1,iw-1)+(cah(1,iw)-cah(1,iw-1))*xx*dw x2=cah(ic-1,iw-1)+(cah(ic-1,iw)-cah(ic-1,iw-1))*xx*dw y2=x2+(cah(ic,iw-1)-cah(ic-1,iw-1))*xx*dc if (x1.lt.y2) x1=y2 df(i,j,k)=df(i,j,k)+0.0343*(x1-y2) enddo enddo enddo end subroutine flxco2 !***************************************************************** subroutine o3prof (np, pres, ozone, its, ite, kts, kte, p, o3) !***************************************************************** implicit none !***************************************************************** ! integer iprof,m,np,its,ite,kts,kte integer i,k,ko,kk real pres(np),ozone(np) real p(its:ite,kts:kte),o3(its:ite,kts:kte) ! Statement function real Linear, x1, y1, x2, y2, x Linear(x1, y1, x2, y2, x) = & (y1 * (x2 - x) + y2 * (x - x1)) / (x2 - x1) ! do k = 1,np pres(k) = alog(pres(k)) enddo do k = kts,kte do i = its, ite p(i,k) = alog(p(i,k)) end do end do ! assume the pressure at model top is greater than pres(1) ! if it is not, this part needs to change do i = its, ite ko = 1 do k = kts+1, kte do while (ko .lt. np .and. p(i,k) .gt. pres(ko)) ko = ko + 1 end do o3(i,k) = Linear (pres(ko), ozone(ko), & pres(ko-1), ozone(ko-1), & p(i,k)) ko = ko - 1 end do end do ! calculate top lay O3 do i = its, ite ko = 1 k = kts do while (ko .le. np .and. p(i,k) .gt. pres(ko)) ko = ko + 1 end do IF (ko-1 .le. 1) then O3(i,k)=ozone(k) ELSE O3(i,k)=0. do kk=ko-2,1,-1 O3(i,k)=O3(i,k)+ozone(kk)*(pres(kk+1)-pres(kk)) enddo O3(i,k)=O3(i,k)/(pres(ko-1)-pres(1)) ENDIF ! print*,'O3=',i,k,ko,O3(i,k),p(i,k),ko,pres(ko),pres(ko-1) end do end subroutine o3prof !----------------------------------------- SUBROUTINE gsfc_swinit(cen_lat, allowed_to_read) REAL, INTENT(IN ) :: cen_lat LOGICAL, INTENT(IN ) :: allowed_to_read center_lat=cen_lat END SUBROUTINE gsfc_swinit END MODULE module_ra_gsfcsw