!WRF:MEDIATION_LAYER:IO ! --- ! This obs-nudging FDDA module (RTFDDA) is developed by the ! NCAR/RAL/NSAP (National Security Application Programs), under the ! sponsorship of ATEC (Army Test and Evaluation Commands). ATEC is ! acknowledged for releasing this capability for WRF community ! research applications. ! ! The NCAR/RAL RTFDDA module was adapted, and significantly modified ! from the obs-nudging module in the standard MM5V3.1 which was originally ! developed by PSU (Stauffer and Seaman, 1994). ! ! Yubao Liu (NCAR/RAL): lead developer of the RTFDDA module ! Al Bourgeois (NCAR/RAL): lead engineer implementing RTFDDA into WRF-ARW ! Nov. 2006 ! ! References: ! ! Liu, Y., A. Bourgeois, T. Warner, S. Swerdlin and J. Hacker, 2005: An ! implementation of obs-nudging-based FDDA into WRF for supporting ! ATEC test operations. 2005 WRF user workshop. Paper 10.7. ! ! Liu, Y., A. Bourgeois, T. Warner, S. Swerdlin and W. Yu, 2006: An update ! on "obs-nudging"-based FDDA for WRF-ARW: Verification using OSSE ! and performance of real-time forecasts. 2006 WRF user workshop. Paper 4.7. ! ! Stauffer, D.R., and N.L. Seaman, 1994: Multi-scale four-dimensional data ! assimilation. J. Appl. Meteor., 33, 416-434. ! ! http://www.rap.ucar.edu/projects/armyrange/references.html ! SUBROUTINE wrf_fddaobs_in (grid ,config_flags) USE module_domain USE module_configure USE module_model_constants !rovg IMPLICIT NONE TYPE(domain) :: grid TYPE(grid_config_rec_type), INTENT(IN) :: config_flags #if ( EM_CORE == 1 ) ! Local variables integer :: ktau ! timestep index corresponding to xtime integer :: krest ! restart timestep integer :: inest ! nest level integer :: infreq ! input frequency integer :: nstlev ! nest level real :: dtmin ! dt in minutes real :: xtime ! forecast time in minutes logical :: iprt_in4dob ! print flag INTEGER ids , ide , jds , jde , kds , kde , & ims , ime , jms , jme , kms , kme , & ips , ipe , jps , jpe , kps , kpe INTEGER ij, its, ite, jts, jte ! Modified to also call in4dob intially, since subr in4dob is no ! longer called from subr fddaobs_init. Note that itimestep is now ! the model step BEFORE the model integration step, because this ! routine is now called by med_before_solve_io. ktau = grid%itimestep ! ktau corresponds to xtime krest = grid%fdob%ktaur inest = grid%grid_id nstlev = grid%fdob%levidn(inest) infreq = grid%obs_ionf*(grid%parent_grid_ratio**nstlev) iprt_in4dob = grid%obs_ipf_in4dob IF( (ktau.GT.krest.AND.MOD(ktau,infreq).EQ.0) & .OR.(ktau.EQ.krest) ) then ! Calculate forecast time. dtmin = grid%dt/60. xtime = grid%xtime CALL get_ijk_from_grid ( grid , & ids, ide, jds, jde, kds, kde, & ims, ime, jms, jme, kms, kme, & ips, ipe, jps, jpe, kps, kpe ) !$OMP PARALLEL DO & !$OMP PRIVATE ( ij ) DO ij = 1 , grid%num_tiles its = grid%i_start(ij) ite = min(grid%i_end(ij),ide-1) jts = grid%j_start(ij) jte = min(grid%j_end(ij),jde-1) CALL in4dob(inest, xtime, ktau, krest, dtmin, & grid%julyr, grid%julday, grid%gmt, & !obsnypatch grid%obs_nudge_opt, grid%obs_nudge_wind, grid%obs_nudge_temp, & grid%obs_nudge_mois, grid%obs_nudge_pstr, grid%obs_coef_wind, & grid%obs_coef_temp, grid%obs_coef_mois, grid%obs_coef_pstr, & grid%obs_rinxy, grid%obs_rinsig, grid%fdob%window, & grid%obs_npfi, grid%obs_ionf, & grid%obs_prt_max, grid%obs_prt_freq, & grid%obs_idynin, & grid%obs_dtramp, grid%fdob, grid%fdob%varobs, & grid%fdob%timeob, grid%fdob%nlevs_ob, grid%fdob%lev_in_ob, & grid%fdob%plfo, grid%fdob%elevob, grid%fdob%rio, & grid%fdob%rjo, grid%fdob%rko, & grid%xlat, grid%xlong, & config_flags%cen_lat, & config_flags%cen_lon, & config_flags%stand_lon, & config_flags%truelat1, config_flags%truelat2, & grid%fdob%known_lat, grid%fdob%known_lon, & config_flags%dx, config_flags%dy, rovg, t0, & grid%fdob%obsprt, & grid%fdob%latprt, grid%fdob%lonprt, & grid%fdob%mlatprt, grid%fdob%mlonprt, & grid%fdob%stnidprt, & ide, jde, & ims, ime, jms, jme, & its, ite, jts, jte, & config_flags%map_proj, & model_config_rec%parent_grid_ratio, & model_config_rec%i_parent_start(inest), & model_config_rec%j_parent_start(inest), & model_config_rec%max_dom, & model_config_rec%nobs_ndg_vars, grid%max_obs, iprt_in4dob) ENDDO !$OMP END PARALLEL DO ENDIF RETURN #endif END SUBROUTINE wrf_fddaobs_in #if ( EM_CORE == 1 ) !------------------------------------------------------------------------------ ! Begin subroutine in4dob and its subroutines !------------------------------------------------------------------------------ SUBROUTINE in4dob(inest, xtime, ktau, ktaur, dtmin, & myear, julday, gmt, & !obsnypatch nudge_opt, iswind, istemp, & ismois, ispstr, giv, & git, giq, gip, & rinxy, rinsig, twindo, & npfi, ionf, prt_max, prt_freq, idynin, & dtramp, fdob, varobs, & timeob, nlevs_ob, lev_in_ob, & plfo, elevob, rio, & rjo, rko, & xlat, xlong, & cen_lat, & cen_lon, & stand_lon, & true_lat1, true_lat2, & known_lat, known_lon, & dxm, dym, rovg, t0, & obs_prt, & lat_prt, lon_prt, & mlat_prt, mlon_prt, & stnid_prt, & e_we, e_sn, & ims, ime, jms, jme, & its, ite, jts, jte, & map_proj, & parent_grid_ratio, & i_parent_start, & j_parent_start, & maxdom, & nndgv, niobf, iprt) USE module_domain USE module_model_constants, ONLY : rcp USE module_date_time , ONLY : geth_idts USE module_llxy IMPLICIT NONE ! THIS IS SUBROUTINE READS AN OBSERVATION DATA FILE AND ! SELECTS ONLY THOSE VALUES OBSERVED AT TIMES THAT FALL ! WITHIN A TIME WINDOW (TWINDO) CENTERED ABOUT THE CURRENT ! FORECAST TIME (XTIME). THE INCOMING OBS FILES MUST BE ! IN CHRONOLOGICAL ORDER. ! ! NOTE: This routine was originally designed for MM5, which uses ! a nonstandard (I,J) coordinate system. For WRF, I is the ! east-west running coordinate, and J is the south-north ! running coordinate. So "J-slab" here is west-east in ! extent, not south-north as for MM5. RIO and RJO have ! the opposite orientation here as for MM5. -ajb 06/10/2004 ! NOTE - IN4DOB IS CALLED ONLY FOR THE COARSE MESH TIMES ! - VAROBS(IVAR,N) HOLDS THE OBSERVATIONS. ! IVAR=1 OBS U ! IVAR=2 OBS V ! IVAR=3 OBS T ! IVAR=4 OBS Q ! IVAR=5 OBS Pressure ! IVAR=6 OBS Height INTEGER, intent(in) :: niobf ! maximum number of observations INTEGER, intent(in) :: nndgv ! number of nudge variables INTEGER, intent(in) :: INEST ! nest level REAL, intent(in) :: xtime ! model time in minutes INTEGER, intent(in) :: KTAU ! current timestep INTEGER, intent(in) :: KTAUR ! restart timestep REAL, intent(in) :: dtmin ! dt in minutes INTEGER, intent(in) :: myear ! model year !obsnypatch INTEGER, intent(in) :: julday ! Julian day REAL, intent(in) :: gmt ! Model GMT at start of run INTEGER, intent(in) :: nudge_opt ! obs-nudge flag for this nest INTEGER, intent(in) :: iswind ! nudge flag for wind INTEGER, intent(in) :: istemp ! nudge flag for temperature INTEGER, intent(in) :: ismois ! nudge flag for moisture INTEGER, intent(in) :: ispstr ! nudge flag for pressure (obsolete) REAL, intent(in) :: giv ! coefficient for wind REAL, intent(in) :: git ! coefficient for temperature REAL, intent(in) :: giq ! coefficient for moisture REAL, intent(in) :: gip ! coefficient for pressure REAL, intent(in) :: rinxy ! horizontal radius of influence (km) REAL, intent(in) :: rinsig ! vertical radius of influence (on sigma) REAL, intent(inout) :: twindo ! (time window)/2 (min) for nudging INTEGER, intent(in) :: npfi ! coarse-grid time-step frequency for diagnostics INTEGER, intent(in) :: ionf ! coarse-grid time-step frequency for obs-nudging calcs INTEGER, intent(in) :: prt_max ! max number of entries of obs for diagnostic printout INTEGER, intent(in) :: prt_freq ! frequency (in obs index) for diagnostic printout. INTEGER, intent(in) :: idynin ! for dynamic initialization using a ramp-down function REAL, intent(in) :: dtramp ! time period in minutes for ramping TYPE(fdob_type), intent(inout) :: fdob ! derived data type for obs data REAL, intent(inout) :: varobs(nndgv,niobf) ! observational values in each variable REAL, intent(inout) :: timeob(niobf) ! model times for each observation (hours) REAL, intent(inout) :: nlevs_ob(niobf) ! numbers of levels in sounding obs REAL, intent(inout) :: lev_in_ob(niobf) ! level in sounding-type obs REAL, intent(inout) :: plfo(niobf) ! index for type of obs-platform REAL, intent(inout) :: elevob(niobf) ! elevations of observations (meters) REAL, intent(inout) :: rio(niobf) ! west-east grid coordinate (non-staggered grid) REAL, intent(inout) :: rjo(niobf) ! south-north grid coordinate (non-staggered grid) REAL, intent(inout) :: rko(niobf) ! vertical grid coordinate REAL, DIMENSION( ims:ime, jms:jme ), & INTENT(IN ) :: xlat, xlong ! lat/lon on mass-pt grid (for diagnostics only) REAL, intent(in) :: cen_lat ! center latitude for map projection REAL, intent(in) :: cen_lon ! center longitude for map projection REAL, intent(in) :: stand_lon ! standard longitude for map projection REAL, intent(in) :: true_lat1 ! truelat1 for map projection REAL, intent(in) :: true_lat2 ! truelat2 for map projection REAL, intent(in) :: known_lat ! latitude of domain origin point (i,j)=(1,1) REAL, intent(in) :: known_lon ! longigude of domain origin point (i,j)=(1,1) REAL, intent(in) :: dxm ! grid size in x (meters) REAL, intent(in) :: dym ! grid size in y (meters) REAL, intent(in) :: rovg ! constant rho over g REAL, intent(in) :: t0 ! background temperature INTEGER, intent(inout) :: obs_prt(prt_max) ! For printout of obs index REAL, intent(inout) :: lat_prt(prt_max) ! For printout of obs latitude REAL, intent(inout) :: lon_prt(prt_max) ! For printout of obs longitude REAL, intent(inout) :: mlat_prt(prt_max) ! For printout of model lat at obs (ri,rj) REAL, intent(inout) :: mlon_prt(prt_max) ! For printout of model lon at obs (ri,rj) INTEGER, intent(inout) :: stnid_prt(40,prt_max) ! For printout of model lon at obs (ri,rj) INTEGER, intent(in) :: e_we ! max grid index in south-north coordinate INTEGER, intent(in) :: e_sn ! max grid index in west-east coordinate INTEGER, intent(in) :: ims ! grid memory start index (west-east dim) INTEGER, intent(in) :: ime ! grid memory end index (west-east dim) INTEGER, intent(in) :: jms ! grid memory start index (south-north dim) INTEGER, intent(in) :: jme ! grid memory end index (south-north dim) INTEGER, intent(in) :: its ! grid tile start index (west-east dim) INTEGER, intent(in) :: ite ! grid tile end index (west-east dim) INTEGER, intent(in) :: jts ! grid tile start index (south-north dim) INTEGER, intent(in) :: jte ! grid tile end index (south-north dim) INTEGER, intent(in) :: map_proj ! map projection index INTEGER, intent(in) :: parent_grid_ratio ! parent to nest grid ration INTEGER, intent(in) :: i_parent_start ! starting i coordinate in parent domain INTEGER, intent(in) :: j_parent_start ! starting j coordinate in parent domain INTEGER, intent(in) :: maxdom ! maximum number of domains LOGICAL, intent(in) :: iprt ! print flag !*** DECLARATIONS FOR IMPLICIT NONE integer :: n, ndum, nopen, nvol, idate, imm, iss integer :: nlast ! last obs in list of valid obs from prev window integer :: nsta ! number of stations held in timeobs array integer :: nstaw ! # stations within the actual time window integer :: nprev ! previous n in obs read loop (for printout only) integer :: meas_count, imc, njend, njc, njcc, julob, kn real :: hourob, rjulob real :: xhour, tback, tforwd, rjdate1, timanl1, rtimob real :: rj, ri, elevation, pressure_data real :: pressure_qc, height_data, height_qc, temperature_data real :: temperature_qc, u_met_data, u_met_qc, v_met_data real :: v_met_qc, rh_data, rh_qc, r_data, slp_data, slp_qc real :: ref_pres_data, ref_pres_qc, psfc_data, psfc_qc real :: precip_data, precip_qc, tbar, twdop real*8 :: tempob INTEGER, EXTERNAL :: nvals_le_limit ! for finding #obs with timeobs <= tforwd ! Local variables TYPE (PROJ_INFO) :: obs_proj ! Structure for obs projection information. character*14 date_char character*19 obs_date !obsnypatch integer idts !obsnypatch character*40 platform,source,id,namef character*2 fonc character(len=200) :: msg ! Argument to wrf_message real latitude,longitude logical :: newpass ! New pass flag (used for printout) logical is_sound,bogus LOGICAL OPENED,exist integer :: ieof(5),ifon(5) data ieof/0,0,0,0,0/ data ifon/0,0,0,0,0/ integer :: nmove, nvola integer :: iyear, itimob !obsnypatch integer :: errcnt DATA NMOVE/0/,NVOLA/61/ ! if(ieof(inest).eq.2.and.fdob%nstat.eq.0)then ! IF (iprt) print *,'returning from in4dob' ! return ! endif ! IF (iprt) print *,'start in4dob ',inest,xtime IF(nudge_opt.NE.1)RETURN ! Initialize obs for printout obs_prt = -999 newpass = .true. errcnt = 0 ! if start time, or restart time, set obs array to missing value IF(KTAU.EQ.0.OR.KTAU.EQ.KTAUR) THEN DO N=1,NIOBF TIMEOB(N)=99999. ENDDO fdob%xtime_at_rest = xtime !yliu 20080127 ENDIF ! set number of obs=0 if at start or restart IF(KTAU.EQ.KTAUR)fdob%NSTAT=0 NSTA=fdob%NSTAT XHOUR=XTIME/60. XHOUR=AMAX1(XHOUR,0.0) ! DEFINE THE MAX LIMITS OF THE WINDOW TBACK=XHOUR-TWINDO TFORWD=XHOUR+TWINDO IF (iprt) then write(msg,fmt='(2(a,f8.3),a,i2)') & 'OBS NUDGING: Reading new obs for time window TBACK = ', & tback,' TFORWD = ',tforwd,' for grid = ',inest call wrf_message(msg) ENDIF ! For obs that have become invalid because they are too old for the current time ! window, mark with 99999 to set up for removal from the rolling valid-obs list. IF(NSTA.NE.0) THEN NDUM=0 t_window : DO N=1,NSTA+1 IF((TIMEOB(N)-TBACK).LT.0) THEN TIMEOB(N)=99999. ENDIF IF(TIMEOB(N).LT.9.E4) EXIT t_window NDUM=N ENDDO t_window IF (iprt .and. ndum>0) THEN write(msg,fmt='(a,i5,2a)') 'OBS NUDGING: ',ndum,' previously read obs ', & 'are now too old for the current window and have been removed.' call wrf_message(msg) ENDIF ! REMOVE OLD OBS DENOTED BY 99999. AT THE FRONT OF TIMEOB ARRAY ! IF (iprt) print *,'ndum at 20=',ndum NDUM=ABS(NDUM) NMOVE=NIOBF-NDUM IF(NMOVE.GT.0 .AND. NDUM.NE.0 ) THEN DO N=1,NMOVE do KN = 1,nndgv VAROBS(KN,N)=VAROBS(KN,N+NDUM) enddo ! RIO is the west-east coordinate. RJO is south-north. (ajb) RJO(N)=RJO(N+NDUM) RIO(N)=RIO(N+NDUM) RKO(N)=RKO(N+NDUM) TIMEOB(N)=TIMEOB(N+NDUM) nlevs_ob(n)=nlevs_ob(n+ndum) lev_in_ob(n)=lev_in_ob(n+ndum) plfo(n)=plfo(n+ndum) elevob(n)=elevob(n+ndum) ENDDO ENDIF NOPEN=NMOVE+1 IF(NOPEN.LE.NIOBF) THEN DO N=NOPEN,NIOBF do KN = 1,nndgv VAROBS(KN,N)=99999. enddo RIO(N)=99999. RJO(N)=99999. RKO(N)=99999. TIMEOB(N)=99999. nlevs_ob(n)=99999. lev_in_ob(n)=99999. plfo(n)=99999. elevob(n)=99999. ENDDO ENDIF ENDIF ! Compute map projection info. call set_projection(obs_proj, map_proj, cen_lat, cen_lon, & true_lat1, true_lat2, stand_lon, & known_lat, known_lon, & e_we, e_sn, dxm, dym ) ! FIND THE LAST OBS IN THE LIST NLAST=0 last_ob : DO N=1,NIOBF ! print *,'nlast,n,timeob(n)=',nlast,n,timeob(n) IF(TIMEOB(N).GT.9.E4) EXIT last_ob NLAST=N ENDDO last_ob ! print *,'in4dob, after 90 ',nlast,ktau,ktaur,nsta ! open file if at beginning or restart IF(KTAU.EQ.0.OR.KTAU.EQ.KTAUR) THEN fdob%RTLAST=-999. INQUIRE (NVOLA+INEST-1,OPENED=OPENED) IF (.NOT. OPENED) THEN ifon(inest)=1 write(fonc(1:2),'(i2)')ifon(inest) if(fonc(1:1).eq.' ')fonc(1:1)='0' INQUIRE (file='OBS_DOMAIN'//CHAR(INEST+ICHAR('0'))//fonc(1:2) & ,EXIST=exist) if(exist)then IF (iprt) THEN write(msg,*) 'opening first fdda obs file, fonc=', & fonc,' inest=',inest call wrf_message(msg) write(msg,*) 'ifon=',ifon(inest) call wrf_message(msg) ENDIF OPEN(NVOLA+INEST-1, & FILE='OBS_DOMAIN'//CHAR(INEST+ICHAR('0'))//fonc(1:2), & FORM='FORMATTED',STATUS='OLD') else ! no first file to open IF (iprt) call wrf_message("there are no fdda obs files to open") return endif ENDIF ENDIF !end if(KTAU.EQ.0.OR.KTAU.EQ.KTAUR) ! print *,'at jc check1' !********************************************************************** ! -------------- BIG 100 LOOP OVER N -------------- !********************************************************************** ! NOW CHECK TO SEE IF EXTRA DATA MUST BE READ IN FROM THE ! DATA FILE. CONTINUE READING UNTIL THE REACHING THE EOF ! (DATA TIME IS NEGATIVE) OR FIRST TIME PAST TFORWD. THE ! LAST OBS CURRENTLY AVAILABLE IS IN N=NMOVE. N=NLAST IF(N.EQ.0)GOTO 110 1001 continue ! ieof=2 means no more files IF(IEOF(inest).GT.1) then GOTO 130 endif 100 CONTINUE !ajb 20070116 bugfix for zero array index. N=0 if first obs is not in the domain. IF(N.ne.0) THEN IF(TIMEOB(N).GT.TFORWD.and.timeob(n).lt.99999.) THEN GOTO 130 ENDIF ENDIF ! OBSFILE: no more data in the obsfile ! AJB note: This is where we would implement multi-file reading. if(ieof(inest).eq.1 )then ieof(inest)=2 goto 130 endif !********************************************************************** ! -------------- 110 SUBLOOP OVER N -------------- !********************************************************************** 110 continue ! THE TIME OF THE MOST RECENTLY ACQUIRED OBS IS .LE. TFORWD, ! SO CONTINUE READING IF(N.GT.NIOBF-1)GOTO 120 ! REPLACE NVOLA WITH LUN 70, AND USE NVOLA AS A FILE COUNTER NVOL=NVOLA+INEST-1 IF(fdob%IEODI.EQ.1)GOTO 111 read(nvol,101,end=111,err=111)date_char 101 FORMAT(1x,a14) n=n+1 ! Convert the form of the observation date for geth_idts. call fmt_date(date_char, obs_date) ! Compute the time period in seconds from the model reference ! date (fdob%sdate) until the observation date. call geth_idts(obs_date, fdob%sdate(1:19), idts) ! Convert time in seconds to hours. ! In case of restart, correct for new sdate. idts = idts + nint(fdob%xtime_at_rest*60.) ! yliu 20080127 rtimob =float(idts)/3600. timeob(n)=rtimob ! print *,'read in ob ',n,timeob(n),rtimob IF(IDYNIN.EQ.1.AND.TIMEOB(N)*60..GT.fdob%DATEND) THEN IF (iprt) THEN write(msg,*) ' IN4DOB: FOR INEST = ',INEST,' AT XTIME = ',XTIME, & ' TIMEOB = ',TIMEOB(N)*60.,' AND DATEND = ',fdob%DATEND,' :' call wrf_message(msg) write(msg,*) ' END-OF-DATA FLAG SET FOR OBS-NUDGING', & ' DYNAMIC INITIALIZATION' call wrf_message(msg) ENDIF fdob%IEODI=1 TIMEOB(N)=99999. rtimob=timeob(n) ENDIF read(nvol,102)latitude,longitude 102 FORMAT(2x,2(f9.4,1x)) ! if(ifon.eq.4)print *,'ifon=4',latitude,longitude ! this works only for lc projection ! yliu: add llxy for all 3 projection !ajb Arguments ri and rj have been switched from MM5 orientation. CALL latlon_to_ij(obs_proj, latitude, longitude, ri, rj) !ajb ri and rj are referenced to the non-staggered grid (not mass-pt!). ! (For MM5, they were referenced to the dot grid.) ri = ri + .5 !ajb Adjust from mass-pt to non-staggered grid. rj = rj + .5 !ajb Adjust from mass-pt to non-staggered grid. rio(n)=ri rjo(n)=rj read(nvol,1021)id,namef 1021 FORMAT(2x,2(a40,3x)) read(nvol,103)platform,source,elevation,is_sound,bogus,meas_count 103 FORMAT( 2x,2(a16,2x),f8.0,2x,2(l4,2x),i5) ! write(6,*) '----- OBS description ----- ' ! write(6,*) 'platform,source,elevation,is_sound,bogus,meas_count:' ! write(6,*) platform,source,elevation,is_sound,bogus,meas_count ! yliu elevob(n)=elevation ! jc ! change platform from synop to profiler when needed if(namef(2:9).eq.'PROFILER')platform(7:14)='PROFILER' ! yliu if(namef(2:6).eq.'ACARS')platform(7:11)='ACARS' if(namef(1:7).eq.'SATWNDS') platform(1:11)='SATWNDS ' if(namef(1:8).eq.'CLASS DA')platform(7:10)='TEMP' ! yliu end rko(n)=-99. !yliu 20050706 ! if((platform(7:11).eq.'METAR').or.(platform(7:11).eq.'SPECI').or. ! 1 (platform(7:10).eq.'SHIP').or.(platform(7:11).eq.'SYNOP').or. ! 1 (platform(1:4).eq.'SAMS')) ! 1 rko(n)=1.0 if(.NOT. is_sound) rko(n)=1.0 !yliu 20050706 end ! plfo is inFORMATion on what platform. May use this later in adjusting weights plfo(n)=99. if(platform(7:11).eq.'METAR')plfo(n)=1. if(platform(7:11).eq.'SPECI')plfo(n)=2. if(platform(7:10).eq.'SHIP')plfo(n)=3. if(platform(7:11).eq.'SYNOP')plfo(n)=4. if(platform(7:10).eq.'TEMP')plfo(n)=5. if(platform(7:11).eq.'PILOT')plfo(n)=6. if(platform(1:7).eq.'SATWNDS')plfo(n)=7. if(platform(7:11).eq.'SATWI')plfo(n)=7. if(platform(1:4).eq.'SAMS')plfo(n)=8. if(platform(7:14).eq.'PROFILER')plfo(n)=9. ! yliu: ACARS->SATWINDS if(platform(7:11).eq.'ACARS')plfo(n)=7. ! yliu: end if(plfo(n).eq.99.) then IF (iprt) then write(msg,*) 'n=',n,' unknown ob of type ',platform call wrf_message(msg) ENDIF endif !====================================================================== !====================================================================== ! THIS PART READS SOUNDING INFO IF(is_sound)THEN nlevs_ob(n)=real(meas_count) lev_in_ob(n)=1. do imc=1,meas_count ! write(6,*) '0 inest = ',inest,' n = ',n ! the sounding has one header, many levels. This part puts it into ! "individual" observations. There's no other way for nudob to deal ! with it. if(imc.gt.1)then ! sub-loop over N n=n+1 if(n.gt.niobf)goto 120 nlevs_ob(n)=real(meas_count) lev_in_ob(n)=real(imc) timeob(n)=rtimob rio(n)=ri rjo(n)=rj rko(n)=-99. plfo(n)=plfo(n-imc+1) elevob(n)=elevation endif read(nvol,104)pressure_data,pressure_qc, & height_data,height_qc, & temperature_data,temperature_qc, & u_met_data,u_met_qc, & v_met_data,v_met_qc, & rh_data,rh_qc 104 FORMAT( 1x,6(f11.3,1x,f11.3,1x)) ! yliu: Ensemble - add disturbance to upr obs ! if(plfo(n).eq.5.or.plfo(n).eq.6.or.plfo(n).eq.9) then FORE07E08 ! if(imc.eq.1) then FORE07E08 ! call srand(n) ! t_rand =- (rand(2)-0.5)*6 ! call srand(n+100000) ! u_rand =- (rand(2)-0.5)*6 ! call srand(n+200000) ! v_rand =- (rand(2)-0.5)*6 ! endif FORE07E08 ! if(temperature_qc.ge.0..and.temperature_qc.lt.30000..and. ! & temperature_data .gt. -88880.0 ) ! & temperature_data = temperature_data + t_rand ! if((u_met_qc.ge.0..and.u_met_qc.lt.30000.).and. ! & (v_met_qc.ge.0..and.v_met_qc.lt.30000.).and. ! make sure at least 1 of the components is .ne.0 ! & (u_met_data.ne.0..or.v_met_data.ne.0.) .and. ! & (u_met_data.gt.-88880.0 .and. v_met_data.gt.-88880.0) )then ! u_met_data = u_met_data + u_rand ! v_met_data = v_met_data + v_rand ! endif ! endif FORE07E08 ! yliu: Ens test - end ! jc ! hardwire to switch -777777. qc to 0. here temporarily ! -777777. is a sounding level that no qc was done on. if(temperature_qc.eq.-777777.)temperature_qc=0. if(pressure_qc.eq.-777777.)pressure_qc=0. if(height_qc.eq.-777777.)height_qc=0. if(u_met_qc.eq.-777777.)u_met_qc=0. if(v_met_qc.eq.-777777.)v_met_qc=0. if(rh_qc.eq.-777777.)rh_qc=0. if(temperature_data.eq.-888888.)temperature_qc=-888888. if(pressure_data.eq.-888888.)pressure_qc=-888888. if(height_data.eq.-888888.)height_qc=-888888. if(u_met_data.eq.-888888.)u_met_qc=-888888. if(v_met_data.eq.-888888.)v_met_qc=-888888. if(rh_data.eq.-888888.)rh_qc=-888888. ! jc ! Hardwire so that only use winds in pilot obs (no winds from temp) and ! only use temperatures and rh in temp obs (no temps from pilot obs) ! Do this because temp and pilot are treated as 2 platforms, but pilot ! has most of the winds, and temp has most of the temps. If use both, ! the second will smooth the effect of the first. Usually temps come in after ! pilots. pilots usually don't have any temps, but temp obs do have some ! winds usually. ! plfo=5 is TEMP ob, range sounding is an exception !yliu start -- comment out to test with merged PILOT and TEMP and ! do not use obs interpolated by little_r ! if(plfo(n).eq.5. .and. namef(1:8).ne.'CLASS DA')then ! u_met_data=-888888. ! v_met_data=-888888. ! u_met_qc=-888888. ! v_met_qc=-888888. ! endif if(plfo(n).eq.5..and.(u_met_qc.eq.256..or.v_met_qc.eq.256.))then u_met_data=-888888. v_met_data=-888888. u_met_qc=-888888. v_met_qc=-888888. endif !yliu end ! plfo=6 is PILOT ob if(plfo(n).eq.6.)then temperature_data=-888888. rh_data=-888888. temperature_qc=-888888. rh_qc=-888888. endif !ajb Store temperature for WRF ! NOTE: The conversion to potential temperature, performed later in subroutine ! errob, requires good pressure data, either directly or via good height data. ! So here, in addition to checking for good temperature data, we must also ! do a check for good pressure or height. if(temperature_qc.ge.0..and.temperature_qc.lt.30000.)then if( (pressure_qc.ge.0..and.pressure_qc.lt.30000.) .or. & (height_qc .ge.0..and.height_qc .lt.30000.) ) then varobs(3,n) = temperature_data else varobs(3,n)=-888888. endif else varobs(3,n)=-888888. endif !ajb Store obs height if(height_qc.ge.0..and.height_qc.lt.30000.)then varobs(6,n)=height_data else varobs(6,n)=-888888. endif if(pressure_qc.ge.0..and.pressure_qc.lt.30000.)then ! if(pressure_qc.ge.0.)then varobs(5,n)=pressure_data else varobs(5,n)=-888888. IF (iprt) THEN if(varobs(6,n).eq.-888888.000) then if (errcnt.le.10) then write(msg,*) '*** PROBLEM: sounding, p and ht undefined',latitude,longitude call wrf_message(msg) errcnt = errcnt + 1 if (errcnt.gt.10) call wrf_message("MAX of 10 warnings issued.") endif endif ENDIF endif if(varobs(5,n).ge.0.)varobs(5,n)=varobs(5,n)*1.e-3 ! don't use data above 80 mb if((varobs(5,n).gt.0.).and.(varobs(5,n).le.8.))then u_met_data=-888888. v_met_data=-888888. u_met_qc=-888888. v_met_qc=-888888. temperature_data=-888888. temperature_qc=-888888. rh_data=-888888. rh_qc=-888888. endif ! Store horizontal wind components for WRF if((u_met_qc.ge.0..and.u_met_qc.lt.30000.).and. & (v_met_qc.ge.0..and.v_met_qc.lt.30000.).and. & ! make sure at least 1 of the components is .ne.0 (u_met_data.ne.0..or.v_met_data.ne.0.))then ! If Earth-relative wind vector, need to rotate it to grid-relative coords if(u_met_qc.eq.129. .and. v_met_qc.eq.129.) then CALL rotate_vector(longitude,u_met_data,v_met_data, & obs_proj,map_proj) endif varobs(1,n)=u_met_data varobs(2,n)=v_met_data else varobs(1,n)=-888888. varobs(2,n)=-888888. endif r_data=-888888. if(rh_qc.ge.0..and.rh_qc.lt.30000.)then if((pressure_qc.ge.0.).and.(temperature_qc.ge.0.).and. & (pressure_qc.lt.30000.).and.(temperature_qc.lt.30000.))then call rh2r(rh_data,temperature_data,pressure_data*.01, & r_data,0) ! yliu, change last arg from 1 to 0 else ! print *,'rh, but no t or p to convert',temperature_qc, & ! pressure_qc,n r_data=-888888. endif endif varobs(4,n)=r_data enddo ! end do imc=1,meas_count ! print *,'--- sdng n=',n,nlevs_ob(n),lev_in_ob(n),timeob(n) ! read in non-sounding obs ELSEIF(.NOT.is_sound)THEN nlevs_ob(n)=1. lev_in_ob(n)=1. read(nvol,105)slp_data,slp_qc, & ref_pres_data,ref_pres_qc, & height_data,height_qc, & temperature_data,temperature_qc, & u_met_data,u_met_qc, & v_met_data,v_met_qc, & rh_data,rh_qc, & psfc_data,psfc_qc, & precip_data,precip_qc 105 FORMAT( 1x,9(f11.3,1x,f11.3,1x)) ! Ensemble: add disturbance to sfc obs ! call srand(n) ! t_rand =+ (rand(2)-0.5)*5 ! call srand(n+100000) ! u_rand =+ (rand(2)-0.5)*5 ! call srand(n+200000) ! v_rand =+ (rand(2)-0.5)*5 ! if(temperature_qc.ge.0..and.temperature_qc.lt.30000. .and. ! & temperature_data .gt. -88880.0 ) ! & temperature_data = temperature_data + t_rand ! if((u_met_qc.ge.0..and.u_met_qc.lt.30000.).and. ! & (v_met_qc.ge.0..and.v_met_qc.lt.30000.).and. ! make sure at least 1 of the components is .ne.0 ! & (u_met_data.ne.0..or.v_met_data.ne.0.) .and. ! & (u_met_data.gt.-88880.0 .and. v_met_data.gt.-88880.0) )then ! u_met_data = u_met_data + u_rand ! v_met_data = v_met_data + v_rand ! endif ! yliu: Ens test - end !Lilis ! calculate psfc if slp is there if((psfc_qc.lt.0.).and.(slp_qc.ge.0..and.slp_qc.lt.30000.).and. & (temperature_qc.ge.0..and.temperature_qc.lt.30000.).and. & (slp_data.gt.90000.))then tbar=temperature_data+0.5*elevation*.0065 psfc_data=slp_data*exp(-elevation/(rovg*tbar)) varobs(5,n)=psfc_data psfc_qc=0. endif !c *No* **Very rough** estimate of psfc from sfc elevation if UUtah ob and elev>1000m ! estimate psfc from temp and elevation ! Do not know sfc pressure in model at this point. ! if((psfc_qc.lt.0.).and.(elevation.gt.1000.).and. ! 1 (temperature_qc.ge.0..and.temperature_qc.lt.30000.) ! 1 .and.(platform(7:16).eq.'SYNOP PRET'))then if((psfc_qc.lt.0.).and. & (temperature_qc.ge.0..and.temperature_qc.lt.30000.))then tbar=temperature_data+0.5*elevation*.0065 psfc_data=100000.*exp(-elevation/(rovg*tbar)) varobs(5,n)=psfc_data psfc_qc=0. endif if((psfc_qc.ge.0..and.psfc_qc.lt.30000.).and.(psfc_data.gt.70000. & .and.psfc_data.lt.105000.))then varobs(5,n)=psfc_data else varobs(5,n)=-888888. endif if(varobs(5,n).ge.0.)varobs(5,n)=varobs(5,n)*1.e-3 !Lilie !ajb Store temperature for WRF if(temperature_qc.ge.0..and.temperature_qc.lt.30000.)then if((psfc_qc.ge.0..and.psfc_qc.lt.30000.).and. & (psfc_data.gt.70000. .and.psfc_data.lt.105000.))then varobs(3,n) = temperature_data else varobs(3,n)=-888888. endif else varobs(3,n)=-888888. endif ! Store horizontal wind components for WRF if((u_met_qc.ge.0..and.u_met_qc.lt.30000.).and. & (v_met_qc.ge.0..and.v_met_qc.lt.30000.).and. & ! make sure at least 1 of the components is .ne.0 (u_met_data.ne.0..or.v_met_data.ne.0.))then ! If Earth-relative wind vector, need to rotate it to grid-relative coords if(u_met_qc.eq.129. .and. v_met_qc.eq.129.) then CALL rotate_vector(longitude,u_met_data,v_met_data, & obs_proj,map_proj) endif varobs(1,n)=u_met_data varobs(2,n)=v_met_data else varobs(1,n)=-888888. varobs(2,n)=-888888. endif ! jc ! if a ship ob has rh<70%, then throw out if(plfo(n).eq.3..and.rh_qc.ge.0..and.rh_data.lt.70.)then rh_qc=-888888. rh_data=-888888. endif ! r_data=-888888. if(rh_qc.ge.0..and.rh_qc.lt.30000.)then if((psfc_qc.ge.0..and.psfc_qc.lt.30000.) & .and.(temperature_qc.ge.0..and.temperature_qc.lt.30000.))then ! rh_data=amin1(rh_data,96.) ! yliu: do not allow surface to be saturated call rh2r(rh_data,temperature_data,psfc_data*.01, & r_data,0) ! yliu, change last arg from 1 to 0 else ! print *,'rh, but no t or p',temperature_data, ! 1 psfc_data,n r_data=-888888. endif endif varobs(4,n)=r_data ELSE IF (iprt) THEN call wrf_message(" ====== ") call wrf_message(" NO Data Found ") ENDIF ENDIF !end if(is_sound) ! END OF SFC OBS INPUT SECTION !====================================================================== !====================================================================== ! check if ob time is too early (only applies to beginning) IF(RTIMOB.LT.TBACK-TWINDO)then IF (iprt) call wrf_message("ob too early") n=n-1 GOTO 110 ENDIF ! check if this ob is a duplicate ! this check has to be before other checks njend=n-1 if(is_sound)njend=n-meas_count do njc=1,njend ! Check that time, lat, lon, and platform all match exactly. ! Platforms 1-4 (surface obs) can match with each other. Otherwise, ! platforms have to match exactly. if( (timeob(n).eq.timeob(njc)) .and. & (rio(n).eq.rio(njc)) .and. & (rjo(n).eq.rjo(njc)) .and. & (plfo(njc).ne.99.) ) then !yliu: if two sfc obs are departed less than 1km, consider they are redundant ! (abs(rio(n)-rio(njc))*dscg.gt.1000.) & ! .or. (abs(rjo(n)-rjo(njc))*dscg.gt.1000.) & ! .or. (plfo(njc).eq.99.) )goto 801 !yliu end ! If platforms different, and either > 4, jump out if( ( (plfo(n).le.4.).and.(plfo(njc).le.4.) ) .or. & (plfo(n).eq.plfo(njc)) ) then ! if not a sounding, and levels are the same then replace first occurrence if((.not.is_sound).and.(rko(njc).eq.rko(n))) then ! print *,'dup single ob-replace ',n,inest, ! plfo(n),plfo(njc) ! this is the sfc ob replacement part do KN = 1,nndgv VAROBS(KN,njc)=VAROBS(KN,n) enddo ! don't need to switch these because they're the same ! RIO(njc)=RIO(n) ! RJO(njc)=RJO(n) ! RKO(njc)=RKO(n) ! TIMEOB(njc)=TIMEOB(n) ! nlevs_ob(njc)=nlevs_ob(n) ! lev_in_ob(njc)=lev_in_ob(n) ! plfo(njc)=plfo(n) ! end sfc ob replacement part n=n-1 goto 100 ! It's harder to fix the soundings, since the number of levels may be different ! The easiest thing to do is to just set the first occurrence to all missing, and ! keep the second occurrence, or vice versa. ! For temp or profiler keep the second, for pilot keep the one with more levs ! This is for a temp or prof sounding, equal to same ! also if a pilot, but second one has more obs elseif( (is_sound).and.(plfo(njc).eq.plfo(n)) .and. & ( (plfo(njc).eq.5.).or.(plfo(njc).eq.9.).or. & ( (plfo(njc).eq.6.).and. & (nlevs_ob(n).ge.nlevs_ob(njc)) ) ) )then IF (iprt) THEN write(msg,*) 'duplicate sounding - eliminate first occurrence', & n,inest,meas_count,nlevs_ob(njc), & latitude,longitude,plfo(njc) call wrf_message(msg) ENDIF if(lev_in_ob(njc).ne.1.) then IF (iprt) THEN write(msg,*) 'problem ******* - dup sndg ', & lev_in_ob(njc),nlevs_ob(njc) call wrf_message(msg) ENDIF endif ! n=n-meas_count ! set the first sounding ob to missing do njcc=njc,njc+nint(nlevs_ob(njc))-1 do KN = 1,nndgv VAROBS(KN,njcc)=-888888. enddo plfo(njcc)=99. enddo goto 100 ! if a pilot, but first one has more obs elseif( (is_sound).and.(plfo(njc).eq.plfo(n)) .and. & (plfo(njc).eq.6.).and. & (nlevs_ob(n).lt.nlevs_ob(njc)) )then IF (iprt) THEN write(msg,*) & 'duplicate pilot sounding - eliminate second occurrence', & n,inest,meas_count,nlevs_ob(njc), & latitude,longitude,plfo(njc) call wrf_message(msg) ENDIF if(lev_in_ob(njc).ne.1.) then IF (iprt) THEN write(msg,*) 'problem ******* - dup sndg ', & lev_in_ob(njc),nlevs_ob(njc) call wrf_message(msg) ENDIF endif n=n-meas_count !ajb Reset timeob for discarded indices. do imc = n+1, n+meas_count timeob(imc) = 99999. enddo goto 100 ! This is for a single-level satellite upper air ob - replace first elseif( (is_sound).and. & (nlevs_ob(njc).eq.1.).and. & (nlevs_ob(n).eq.1.).and. & (varobs(5,njc).eq.varobs(5,n)).and. & (plfo(njc).eq.7.).and.(plfo(n).eq.7.) ) then IF (iprt) then write(msg,*) & 'duplicate single lev sat-wind ob - replace first',n, & inest,meas_count,varobs(5,n) call wrf_message(msg) ENDIF ! this is the single ua ob replacement part do KN = 1,nndgv VAROBS(KN,njc)=VAROBS(KN,n) enddo ! don't need to switch these because they're the same ! RIO(njc)=RIO(n) ! RJO(njc)=RJO(n) ! RKO(njc)=RKO(n) ! TIMEOB(njc)=TIMEOB(n) ! nlevs_ob(njc)=nlevs_ob(n) ! lev_in_ob(njc)=lev_in_ob(n) ! plfo(njc)=plfo(n) ! end single ua ob replacement part n=n-1 goto 100 else ! IF (iprt) THEN ! write(msg,*) 'duplicate location, but no match otherwise',n,njc, & ! plfo(n),varobs(5,n),nlevs_ob(n),lev_in_ob(n), & ! plfo(njc),varobs(5,njc),nlevs_ob(njc),lev_in_ob(njc) ! call wrf_message(msg) ! ENDIF endif endif endif ! end of njc do loop enddo ! check if ob is a sams ob that came in via UUtah - discard if( plfo(n).eq.4..and.(platform(7:16).eq.'SYNOP PRET').and. & (id(7:15).eq.'METNET= 3') )then ! print *,'elim metnet=3',latitude,longitude,rtimob n=n-1 goto 100 endif ! check if ob is in the domain if( (ri.lt.2.).or.(ri.gt.real(e_we-1)).or.(rj.lt.2.).or. & (rj.gt.real(e_sn-1)) ) then n=n-meas_count !ajb Reset timeob for discarded indices. do imc = n+1, n+meas_count timeob(imc) = 99999. enddo goto 100 endif IF(TIMEOB(N).LT.fdob%RTLAST) THEN IF (iprt) THEN call wrf_message("2 OBS ARE NOT IN CHRONOLOGICAL ORDER") call wrf_message("NEW YEAR?") write(msg,*) 'timeob,rtlast,n=',timeob(n),fdob%rtlast,n call wrf_message(msg) ENDIF call wrf_error_fatal ( 'wrf_fddaobs_in: in4dob STOP 111' ) ELSE fdob%RTLAST=TIMEOB(N) ENDIF ! Save obs and model latitude and longitude for printout CALL collect_obs_info(newpass,inest,n,latitude,longitude, & nlast,nprev,niobf,id,stnid_prt, & rio,rjo,prt_max,prt_freq,xlat,xlong, & obs_prt,lat_prt,lon_prt,mlat_prt,mlon_prt, & e_we,e_sn,ims,ime,jms,jme,its,ite,jts,jte) GOTO 100 111 CONTINUE !********************************************************************** ! -------------- END BIG 100 LOOP OVER N -------------- !********************************************************************** if (iprt) then write(msg,5403) NVOL,XTIME call wrf_message(msg) endif IEOF(inest)=1 close(NVOLA+INEST-1) IF (iprt) then write(msg,*) 'closed fdda file for inest=',inest,nsta call wrf_message(msg) ENDIF ! AJB note: Go back and check for more files. (Multi-file implementation) goto 1001 120 CONTINUE ! THE OBSERVATION ARRAYS ARE FULL AND THE MOST RECENTLY ! ACQUIRED OBS STILL HAS TIMEOB .LE. TFORWD. SO START ! DECREASING THE SIZE OF THE WINDOW ! get here if too many obs IF (iprt) THEN write(msg,121) N,NIOBF call wrf_message(msg) ENDIF call wrf_error_fatal ( 'wrf_fddaobs_in: in4dob STOP 122' ) 130 CONTINUE ! READ CYCLE IS COMPLETED. DETERMINE THE NUMBER OF OBS IN ! THE CURRENT WINDOW ! !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC ! BUT FIRST, WHEN KTAU.EQ.0 (OR IN GENERAL, KTAUR), DISCARD THE ! "OLD" OBS FIRST... ! Get here if at end of file, or if obs time is beyond what we need right now. ! On startup, we report the index of the last obs read. ! For restarts, we need to remove any old obs and then repack obs list. IF(KTAU.EQ.KTAUR)THEN NSTA=0 keep_obs : DO N=1,NIOBF ! try to keep all obs, but just don't use yet ! (don't want to throw away last obs read in - especially if ! its a sounding, in which case it looks like many obs) IF(TIMEOB(N).GT.9.e4) EXIT keep_obs if(timeob(n).gt.tforwd) then if(iprt) then write(msg,950) inest call wrf_message(msg) write(msg,951) n,timeob(n),tforwd call wrf_message(msg) endif 950 FORMAT('Saving index of first ob after end of current time window ', & 'for nest = ', i3,':') 951 FORMAT(' ob index = ',i8,', time of ob = ',f8.4, & ' hrs, end of time window = ',f8.4,' hrs') endif NSTA=N ENDDO keep_obs NDUM=0 ! make time=99999. if ob is too old ! print *,'tback,nsta=',tback,nsta old_obs : DO N=1,NSTA+1 IF((TIMEOB(N)-TBACK).LT.0)THEN TIMEOB(N)=99999. ENDIF ! print *,'n,ndum,timeob=',n,ndum,timeob(n) IF(TIMEOB(N).LT.9.E4) EXIT old_obs NDUM=N ENDDO old_obs ! REMOVE OLD OBS DENOTED BY 99999. AT THE FRONT OF TIMEOB ARRAY IF (iprt .and. ktaur > 0) THEN write(msg,fmt='(a,i5,a)') 'OBS NUDGING: Upon restart, skipped over ',ndum, & ' obs that are now too old for the current obs window.' call wrf_message(msg) ENDIF NDUM=ABS(NDUM) NMOVE=NIOBF-NDUM IF( NMOVE.GT.0 .AND. NDUM.NE.0) THEN DO N=1,NMOVE do KN = 1,nndgv VAROBS(KN,N)=VAROBS(KN,N+NDUM) enddo RJO(N)=RJO(N+NDUM) RIO(N)=RIO(N+NDUM) RKO(N)=RKO(N+NDUM) TIMEOB(N)=TIMEOB(N+NDUM) nlevs_ob(n)=nlevs_ob(n+ndum) lev_in_ob(n)=lev_in_ob(n+ndum) plfo(n)=plfo(n+ndum) ENDDO ENDIF ! moved obs up. now fill remaining space with 99999. NOPEN=NMOVE+1 IF(NOPEN.LE.NIOBF) THEN DO N=NOPEN,NIOBF do KN = 1,nndgv VAROBS(KN,N)=99999. enddo RIO(N)=99999. RJO(N)=99999. RKO(N)=99999. TIMEOB(N)=99999. ENDDO ENDIF ENDIF !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC NSTA=0 ! print *,'nsta at restart setting is ',nsta ! recalculate nsta after moving things around recalc : DO N=1,NIOBF ! try to save all obs - don't throw away latest read in IF(TIMEOB(N).GT.9.e4) EXIT recalc NSTA=N ! nsta=n-1 ! yliu test ENDDO recalc ! Find the number of stations that are actually within the time window. nstaw = nvals_le_limit(nsta, timeob, tforwd) IF (iprt) then write(msg,160) KTAU,XTIME,NSTAW call wrf_message(msg) ENDIF IF(KTAU.EQ.KTAUR)THEN IF(nudge_opt.EQ.1)THEN TWDOP=TWINDO*60. IF (iprt) THEN write(msg,1449) INEST,RINXY,RINSIG,TWDOP call wrf_message(msg) IF(ISWIND.EQ.1) then write(msg,1450) GIV call wrf_message(msg) ELSE write(msg,1455) INEST call wrf_message("") call wrf_message(msg) call wrf_message("") ENDIF IF(ISTEMP.EQ.1) then write(msg,1451) GIT call wrf_message(msg) ELSE write(msg,1456) INEST call wrf_message("") call wrf_message(msg) ENDIF IF(ISMOIS.EQ.1) then call wrf_message("") write(msg,1452) GIQ call wrf_message(msg) ELSE write(msg,1457) INEST call wrf_message("") call wrf_message(msg) call wrf_message("") ENDIF ENDIF ENDIF ENDIF IF(KTAU.EQ.KTAUR)THEN IF(fdob%IWTSIG.NE.1)THEN IF (iprt) THEN write(msg,555) call wrf_message(msg) write(msg,556) fdob%RINFMN*RINXY,fdob%RINFMX*RINXY,fdob%PFREE*10. call wrf_message(msg) ENDIF IF(fdob%RINFMN.GT.fdob%RINFMX) then call wrf_error_fatal ( 'wrf_fddaobs_in: in4dob STOP 556' ) ENDIF ! IS MINIMUM GREATER THAN MAXIMUM? IF (iprt) then write(msg,557) fdob%DPSMX*10.,fdob%DCON call wrf_message(msg) ENDIF IF(fdob%DPSMX.GT.10.) then call wrf_error_fatal ( 'wrf_fddaobs_in: in4dob STOP 557' ) ENDIF ENDIF ENDIF IF(KTAU.EQ.KTAUR)THEN IF (iprt) then write(msg,601) INEST,IONF call wrf_message(msg) call wrf_message("") ENDIF ENDIF fdob%NSTAT=NSTA fdob%NSTAW=NSTAW 555 FORMAT(1X,' ABOVE THE SURFACE LAYER, OBS NUDGING IS PERFORMED', & ' ON PRESSURE LEVELS,') 556 FORMAT(1X,' WHERE RINXY VARIES LINEARLY FROM ',E11.3,' KM AT', & ' THE SURFACE TO ',E11.3,' KM AT ',F7.2,' MB AND ABOVE') 557 FORMAT(1X,' IN THE SURFACE LAYER, WXY IS A FUNCTION OF ', & 'DPSMX = ',F7.2,' MB WITH DCON = ',E11.3, & ' - SEE SUBROUTINE NUDOB') 601 FORMAT('FOR EFFICIENCY, THE OBS NUDGING FREQUENCY ', & 'FOR MESH #',I2,' IS ',1I2,' CGM TIMESTEPS ') 121 FORMAT(' WARNING: NOBS = ',I4,' IS GREATER THAN NIOBF = ', & I4,': INCREASE PARAMETER NIOBF') 5403 FORMAT(1H0,'-------------EOF REACHED FOR NVOL = ',I3, & ' AND XTIME = ',F10.2,'-------------------') 160 FORMAT('****** CALL IN4DOB AT KTAU = ',I5,' AND XTIME = ', & F10.2,': NSTA = ',I7,' ******') 1449 FORMAT('*****NUDGING INDIVIDUAL OBS ON MESH #',I2, & ' WITH RINXY = ', & E11.3,' KM, RINSIG = ',E11.3,' AND TWINDO (HALF-PERIOD) = ', & E11.3,' MIN') 1450 FORMAT(1X,'NUDGING IND. OBS WINDS WITH GIV = ',E11.3) 1451 FORMAT(1X,'NUDGING IND. OBS TEMPERATURE WITH GIT = ',E11.3) 1452 FORMAT(1X,'NUDGING IND. OBS MOISTURE WITH GIQ = ',E11.3) 1455 FORMAT(1X,'*** OBS WIND NUDGING FOR MESH ',I2,' IS TURNED OFF!!') 1456 FORMAT(1X,'*** OBS TEMPERATURE NUDGING FOR MESH ',I2,' IS TURNED OFF!!') 1457 FORMAT(1X,'*** OBS MOISTURE NUDGING FOR MESH ',I2,' IS TURNED OFF!!') RETURN END SUBROUTINE in4dob SUBROUTINE julgmt(mdate,julgmtn,timanl,julday,gmt,ind) ! CONVERT MDATE YYMMDDHH TO JULGMT (JULIAN DAY * 100. +GMT) ! AND TO TIMANL (TIME IN MINUTES WITH RESPECT TO MODEL TIME) ! IF IND=0 INPUT MDATE, OUTPUT JULGMTN AND TIMANL ! IF IND=1 INPUT TIMANL, OUTPUT JULGMTN ! IF IND=2 INPUT JULGMTN, OUTPUT TIMANL INTEGER, intent(in) :: MDATE REAL, intent(out) :: JULGMTN REAL, intent(out) :: TIMANL INTEGER, intent(in) :: JULDAY REAL, intent(in) :: GMT INTEGER, intent(in) :: IND !*** DECLARATIONS FOR IMPLICIT NONE real :: MO(12), rjulanl, houranl, rhr integer :: iyr, idate1, imo, idy, ihr, my1, my2, my3, ileap integer :: juldayn, juldanl, idymax, mm IF(IND.EQ.2)GOTO 150 IYR=INT(MDATE/1000000.+0.001) IDATE1=MDATE-IYR*1000000 IMO=INT(IDATE1/10000.+0.001) IDY=INT((IDATE1-IMO*10000.)/100.+0.001) IHR=IDATE1-IMO*10000-IDY*100 MO(1)=31 MO(2)=28 ! IS THE YEAR A LEAP YEAR? (IN THIS CENTURY) IYR=IYR+1900 MY1=MOD(IYR,4) MY2=MOD(IYR,100) MY3=MOD(IYR,400) ILEAP=0 ! jc ! IF(MY1.EQ.0.AND.MY2.NE.0.OR.MY3.EQ.0)THEN IF(MY1.EQ.0)THEN ILEAP=1 MO(2)=29 ENDIF IF(IND.EQ.1)GOTO 200 MO(3)=31 MO(4)=30 MO(5)=31 MO(6)=30 MO(7)=31 MO(8)=31 MO(9)=30 MO(10)=31 MO(11)=30 MO(12)=31 JULDAYN=0 DO 100 MM=1,IMO-1 JULDAYN=JULDAYN+MO(MM) 100 CONTINUE IF(IHR.GE.24)THEN IDY=IDY+1 IHR=IHR-24 ENDIF JULGMTN=(JULDAYN+IDY)*100.+IHR ! CONVERT JULGMT TO TIMANL WRT MODEL TIME IN MINUTES (XTIME) 150 CONTINUE JULDANL=INT(JULGMTN/100.+0.000001) RJULANL=FLOAT(JULDANL)*100. HOURANL=JULGMTN-RJULANL TIMANL=(FLOAT(JULDANL-JULDAY)*24.-GMT+HOURANL)*60. RETURN 200 CONTINUE RHR=GMT+TIMANL/60.+0.000001 IDY=JULDAY IDYMAX=365+ILEAP 300 IF(RHR.GE.24.0)THEN RHR=RHR-24.0 IDY=IDY+1 GOTO 300 ENDIF IF(IDY.GT.IDYMAX)IDY=IDY-IDYMAX JULGMTN=FLOAT(IDY)*100.+RHR RETURN END SUBROUTINE julgmt SUBROUTINE rh2r(rh,t,p,r,iice) ! convert rh to r ! if iice=1, use saturation with respect to ice ! rh is 0-100. ! r is g/g ! t is K ! p is mb ! REAL, intent(in) :: rh REAL, intent(in) :: t REAL, intent(in) :: p REAL, intent(out) :: r INTEGER, intent(in) :: iice !*** DECLARATIONS FOR IMPLICIT NONE real eps, e0, eslcon1, eslcon2, esicon1, esicon2, t0, rh1 real esat, rsat eps=0.62197 e0=6.1078 eslcon1=17.2693882 eslcon2=35.86 esicon1=21.8745584 esicon2=7.66 t0=260. ! print *,'rh2r input=',rh,t,p rh1=rh*.01 if(iice.eq.1.and.t.le.t0)then esat=e0*exp(esicon1*(t-273.16)/(t-esicon2)) else esat=e0*exp(eslcon1*(t-273.16)/(t-eslcon2)) endif rsat=eps*esat/(p-esat) ! print *,'rsat,esat=',rsat,esat r=rh1*rsat ! print *,'rh2r rh,t,p,r=',rh1,t,p,r return END SUBROUTINE rh2r SUBROUTINE rh2rb(rh,t,p,r,iice) ! convert rh to r ! if iice=1, use daturation with respect to ice ! rh is 0-100. ! r is g/g ! t is K ! p is mb REAL, intent(in) :: rh REAL, intent(in) :: t REAL, intent(in) :: p REAL, intent(out) :: r INTEGER, intent(in) :: iice !*** DECLARATIONS FOR IMPLICIT NONE real eps, e0, eslcon1, eslcon2, esicon1, esicon2, t0, rh1 real esat, rsat character(len=200) :: msg ! Argument to wrf_message eps=0.622 e0=6.112 eslcon1=17.67 eslcon2=29.65 esicon1=22.514 esicon2=6.15e3 t0=273.15 write(msg,*) 'rh2r input=',rh,t,p call wrf_message(msg) rh1=rh*.01 if(iice.eq.1.and.t.le.t0)then esat=e0*exp(esicon1-esicon2/t) else esat=e0*exp(eslcon1*(t-t0)/(t-eslcon2)) endif rsat=eps*esat/(p-esat) ! print *,'rsat,esat=',rsat,esat r=rh1*eps*rsat/(eps+rsat*(1.-rh1)) write(msg,*) 'rh2r rh,t,p,r=',rh1,t,p,r call wrf_message(msg) rh1=rh*.01 return END SUBROUTINE rh2rb SUBROUTINE set_projection (obs_proj, map_proj, cen_lat, cen_lon, & true_lat1, true_lat2, stand_lon, & known_lat, known_lon, & e_we, e_sn, dxm, dym ) USE module_llxy !************************************************************************* ! Purpose: Set map projection information which will be used to map the ! observation (lat,lon) location to its corresponding (x,y) ! location on the WRF (coarse) grid. using the selected map ! projection (e.g., Lambert, Mercator, Polar Stereo, etc). !************************************************************************* IMPLICIT NONE TYPE(PROJ_INFO), intent(out) :: obs_proj ! structure for obs projection info. INTEGER, intent(in) :: map_proj ! map projection index REAL, intent(in) :: cen_lat ! center latitude for map projection REAL, intent(in) :: cen_lon ! center longiture for map projection REAL, intent(in) :: true_lat1 ! truelat1 for map projection REAL, intent(in) :: true_lat2 ! truelat2 for map projection REAL, intent(in) :: stand_lon ! standard longitude for map projection INTEGER, intent(in) :: e_we ! max grid index in south-north coordinate INTEGER, intent(in) :: e_sn ! max grid index in west-east coordinate REAL, intent(in) :: known_lat ! latitude of domain origin point (i,j)=(1,1) REAL, intent(in) :: known_lon ! longigude of domain origin point (i,j)=(1,1) REAL, intent(in) :: dxm ! grid size in x (meters) REAL, intent(in) :: dym ! grid size in y (meters) ! Set up map transformation structure CALL map_init(obs_proj) ! Mercator IF (map_proj == PROJ_MERC) THEN CALL map_set(PROJ_MERC, obs_proj, & truelat1 = true_lat1, & lat1 = known_lat, & lon1 = known_lon, & knowni = 1., & knownj = 1., & dx = dxm) ! Lambert conformal ELSE IF (map_proj == PROJ_LC) THEN CALL map_set(PROJ_LC, obs_proj, & truelat1 = true_lat1, & truelat2 = true_lat2, & stdlon = stand_lon, & lat1 = known_lat, & lon1 = known_lon, & knowni = 1., & knownj = 1., & dx = dxm) ! Polar stereographic ELSE IF (map_proj == PROJ_PS) THEN CALL map_set(PROJ_PS, obs_proj, & truelat1 = true_lat1, & stdlon = stand_lon, & lat1 = known_lat, & lon1 = known_lon, & knowni = 1., & knownj = 1., & dx = dxm) ! Cassini (global ARW) ELSE IF (map_proj == PROJ_CASSINI) THEN CALL map_set(PROJ_CASSINI, obs_proj, & latinc = dym*360.0/(2.0*EARTH_RADIUS_M*PI), & loninc = dxm*360.0/(2.0*EARTH_RADIUS_M*PI), & lat1 = known_lat, & lon1 = known_lon, & ! We still need to get POLE_LAT and POLE_LON metadata variables before ! this will work for rotated poles. lat0 = 90.0, & lon0 = 0.0, & knowni = 1., & knownj = 1., & stdlon = stand_lon) ! Rotated latitude-longitude ELSE IF (map_proj == PROJ_ROTLL) THEN CALL map_set(PROJ_ROTLL, obs_proj, & ! I have no idea how this should work for NMM nested domains ixdim = e_we-1, & jydim = e_sn-1, & phi = real(e_sn-2)*dym/2.0, & lambda = real(e_we-2)*dxm, & lat1 = cen_lat, & lon1 = cen_lon, & latinc = dym, & loninc = dxm, & stagger = HH) END IF END SUBROUTINE set_projection SUBROUTINE fmt_date(idate,odate) !obsnypatch !************************************************************************* ! Purpose: Re-format a character date string from YYYYMMDDHHmmss form ! to YYYY-MM-DD_HH:mm:ss form. ! INPUT: ! IDATE - Date string as YYYYMMDDHHmmss ! OUTPUT: ! ODATE - Date string as YYYY-MM-DD_HH:mm:ss !************************************************************************* IMPLICIT NONE CHARACTER*14, intent(in) :: idate ! input date string CHARACTER*19, intent(out) :: odate ! output date string odate(1:19) = "0000-00-00_00:00:00" odate(1:4) = idate(1:4) ! Year odate(6:7) = idate(5:6) ! Month odate(9:10) = idate(7:8) ! Day odate(12:13) = idate(9:10) ! Hours odate(15:16) = idate(11:12) ! Minutes odate(18:19) = idate(13:14) ! Seconds RETURN END SUBROUTINE fmt_date INTEGER FUNCTION nvals_le_limit(isize, values, limit) !------------------------------------------------------------------------------ ! PURPOSE: Return the number of values in a (real) non-decreasing array that ! are less than or equal to the specified upper limit. ! NOTE: It is important that the array is non-decreasing! ! !------------------------------------------------------------------------------ IMPLICIT NONE INTEGER, INTENT(IN) :: isize ! Size of input array REAL, INTENT(IN) :: values(isize) ! Input array of reals REAL, INTENT(IN) :: limit ! Upper limit ! Local variables integer :: n ! Search the array from largest to smallest values. find_nvals: DO n = isize, 1, -1 if(values(n).le.limit) EXIT find_nvals ENDDO find_nvals nvals_le_limit = n RETURN END FUNCTION nvals_le_limit SUBROUTINE collect_obs_info(newpass,inest,n,latitude,longitude, & nlast,nprev,niobf,station_id,stnid, & rio,rjo,prt_max,prt_freq,xlat,xlong, & obs, lat,lon, mlat,mlon, & e_we,e_sn,ims,ime,jms,jme,its,ite,jts,jte) !************************************************************************* ! Purpose: Collect the obs index, obs latitude, obs longitude, obs station ! id, and model latitude and longitude values for print ! diagnostics. Note that THIS SUBROUTINE IS CALLED INTERATIVELY ! FROM IN4DOB, WITHIN THE OBS READ LOOP that reads new obser- ! vations needed for the new time window. Flag newpass is true ! the first time collect_obs_info is called from the read-loop ! for a new time window. So for each pass of IN4DOB, newpass is ! true the first time IN4DOB calls collec_obs_info. ! OBS (soundings) contain multiple obs levels. So on each sub- ! sequent call of collect_obs_info for a specific pass of IN4DOB, ! n will jump by the number of levels in the sounding. ! ! Here, nlast refers to the index of the last valid-time obs ! that was read in during the last pass of IN4DOB (after the old ! obs were removed). This way we can properly start storing ! obs information for the new obs that are being read on this ! pass of IN4DOB, beginning with the first newly read obs for ! this pass of IN4DOB. ! ! Note that nprev is needed to properly handle soundings. On ! each pass, n is stored into nprev, and on each subsequent ! pass of collect_obs_info, a loop is performed from nprev+1 to n. !************************************************************************* IMPLICIT NONE LOGICAL, intent(inout) :: newpass ! New pass flag INTEGER, intent(in) :: inest ! nest index INTEGER, intent(in) :: n ! Observation index REAL, intent(in) :: latitude ! Latitude of obs REAL, intent(in) :: longitude ! Latitude of obs INTEGER, intent(in) :: nlast ! Last obs of valid obs, prev window INTEGER, intent(inout) :: nprev ! Previous obs in new window read seq INTEGER, intent(in) :: niobf ! Maximum number of observations CHARACTER*15, intent(in) :: station_id ! First 15 chars of station id for obs n INTEGER, intent(in) :: prt_max ! Max no. of obs for diagnostic printout INTEGER, intent(inout) :: stnid(40,prt_max) ! Station ids for diagnostic printout REAL, intent(in) :: rio(niobf) ! West-east coord (non-stagger) REAL, intent(in) :: rjo(niobf) ! South-north coord (non-stagger) INTEGER, intent(in) :: prt_freq ! Frequency for diagnostic printout REAL, DIMENSION( ims:ime, jms:jme ), & intent(in ) :: xlat, xlong ! Lat/lon on mass-pt grid INTEGER, intent(inout) :: obs(prt_max) ! Obs index for printout REAL, intent(inout) :: lat(prt_max) ! Obs latitude for printout REAL, intent(inout) :: lon(prt_max) ! Obs longitude for printout REAL, intent(inout) :: mlat(prt_max) ! Model latitude at (rio,rjo) for printout REAL, intent(inout) :: mlon(prt_max) ! Model longitude at (rio,rjo) for printout INTEGER, intent(in) :: e_we ! Max grid index in south-north INTEGER, intent(in) :: e_sn ! Max grid index in west-east INTEGER, intent(in) :: ims ! Grid mem start (west-east) INTEGER, intent(in) :: ime ! Grid mem end (west-east) INTEGER, intent(in) :: jms ! Grid mem start (south-north) INTEGER, intent(in) :: jme ! Grid mem end (south-north) INTEGER, intent(in) :: its ! Grid tile start (west-east) INTEGER, intent(in) :: ite ! Grid tile end (west-east) INTEGER, intent(in) :: jts ! Grid tile start (south-north) INTEGER, intent(in) :: jte ! Grid tile end (south-north) ! Local variables integer i ! Loop counter over station id character integer nn ! Loop counter over obs index integer ndx,ndxp ! Index into printout arrays (ndx and prev ndx) real :: ri, rj ! Mass-pt coord of obs integer :: ril, rjl ! Mass-pt integer coord immed sw of obs integer :: iend, jend ! Upper i, j index for interpolation real :: dxob, dyob ! Grid fractions for interp logical :: llsave ! Save lat/lon values if true character(len=200) :: msg ! Argument to wrf_message if(newpass) then newpass = .false. nprev = nlast ! Reset in case old obs have been discarded from prev window endif ! Start iteration only if we have not yet stored prt_max number of obs for printing. ! Note: The loop below could represent multiple levels in a sounding, so we ! go ahead and start the loop if the beginning index (ndx) is prt_max or ! less, and then exit the loop if ndx exceeds prt_max. if(prt_freq.gt.0) then ndx = (n-nlast-1)/prt_freq + 1 ndxp = (nprev-nlast-1)/prt_freq + 1 else write(msg,*) 'STOP! OBS NAMELIST INPUT obs_prt_freq MUST BE GREATER THAN ZERO.' call wrf_message(msg) write(msg,*) 'THE NAMELIST VALUE IS',prt_freq,' FOR NEST ',inest call wrf_message(msg) call wrf_error_fatal ( 'wrf_fddaobs_in: in4dob STOP' ) endif ! write(6,'5(a,i5),a,a15') 'n = ',n,' nlast = ',nlast,' ndx = ',ndx, & ! ' nprev = ',nprev,' ndxp = ',ndxp, & ! ' station id = ',station_id if(ndxp .lt. prt_max) then MODCHK : do nn = nprev+1, n llsave = .false. ! if( mod(nn-1,prt_freq) .eq. 0 ) then if( mod(nn-nlast-1,prt_freq) .eq. 0 ) then ndx = (nn-nlast-1)/prt_freq + 1 if(ndx.gt.prt_max) EXIT MODCHK ! Limit printout to prt_max entries llsave = .true. endif if(llsave) then ! Collect obs index and latitude and longitude. obs(ndx) = nn lat(ndx) = latitude lon(ndx) = longitude ! Collect first 15 chars of obs station id (in integer format). do i = 1,15 stnid(i,ndx) = ichar(station_id(i:i)) enddo ! Compute and collect the model latitude and longitude at the obs point. CALL get_model_latlon(nn,niobf,rio,rjo,xlat,xlong,e_we,e_sn, & ims,ime,jms,jme,its,ite,jts,jte, & mlat(ndx),mlon(ndx)) endif !end if(llsave) enddo MODCHK endif !end if(ndx .le. prt_max) ! Save index of previous obs in read loop. nprev = n END SUBROUTINE collect_obs_info SUBROUTINE get_model_latlon(n,niobf,rio,rjo,xlat,xlong,e_we,e_sn, & ims,ime,jms,jme,its,ite,jts,jte, & mlat,mlon) !************************************************************************* ! Purpose: Use bilinear interpolation to compute the model latitude and ! longitude at the observation point. !************************************************************************* IMPLICIT NONE INTEGER, intent(in) :: n ! Observation index INTEGER, intent(in) :: niobf ! Maximum number of observations REAL, intent(in) :: rio(niobf) ! West-east coord (non-stagger) REAL, intent(in) :: rjo(niobf) ! South-north coord (non-stagger) REAL, DIMENSION( ims:ime, jms:jme ), & intent(in ) :: xlat, xlong ! Lat/lon on mass-pt grid INTEGER, intent(in) :: e_we ! Max grid index in south-north INTEGER, intent(in) :: e_sn ! Max grid index in west-east INTEGER, intent(in) :: ims ! Grid mem start (west-east) INTEGER, intent(in) :: ime ! Grid mem end (west-east) INTEGER, intent(in) :: jms ! Grid mem start (south-north) INTEGER, intent(in) :: jme ! Grid mem end (south-north) INTEGER, intent(in) :: its ! Grid tile start (west-east) INTEGER, intent(in) :: ite ! Grid tile end (west-east) INTEGER, intent(in) :: jts ! Grid tile start (south-north) INTEGER, intent(in) :: jte ! Grid tile end (south-north) REAL, intent(out) :: mlat ! Model latitude at obs point REAL, intent(out) :: mlon ! Model longitude at obs point ! Local variables integer ndx ! Index into save arrays real :: ri, rj ! Mass-pt coord of obs integer :: ril, rjl ! Mass-pt integer coord immed sw of obs integer :: iend, jend ! Upper i, j index for interpolation real :: dxob, dyob ! Grid fractions for interp ! Compute model latitude and longitude if point on tile. ri = rio(n) - .5 ! mass-pt west-east obs grid coord rj = rjo(n) - .5 ! mass-pt south-north obs grid coord ril = int(ri) rjl = int(rj) dxob = ri - float(ril) dyob = rj - float(rjl) iend = min(ite+1,e_we-2) jend = min(jte+1,e_sn-2) mlat = -999 mlon = -999 if(ri.ge.its .and. ri.lt.iend .and. rj.ge.jts .and. rj.lt.jend) then ! bilinear interpolation mlat = ((1.-dyob)*((1.-dxob)*xlat(ril,rjl)+ & dxob*xlat(ril+1,rjl) & )+dyob*((1.-dxob)*xlat(ril,rjl+1)+ & dxob*xlat(ril+1,rjl+1))) mlon = ((1.-dyob)*((1.-dxob)*xlong(ril,rjl)+ & dxob*xlong(ril+1,rjl) & )+dyob*((1.-dxob)*xlong(ril,rjl+1)+ & dxob*xlong(ril+1,rjl+1))) endif END SUBROUTINE get_model_latlon SUBROUTINE rotate_vector(lon,u,v,obs_proj,map_proj) USE module_llxy !************************************************************************* ! Purpose: Rotate a single Earth-relative wind vector to a grid-relative ! wind vector. !************************************************************************* IMPLICIT NONE REAL, intent(in) :: lon ! Longitude (deg) REAL, intent(inout) :: u ! U-component of wind vector REAL, intent(inout) :: v ! V-component of wind vector TYPE(PROJ_INFO),intent(in) :: obs_proj ! Structure for obs projection INTEGER, intent(in) :: map_proj ! Map projection index ! Local variables real diff, alpha double precision udbl, vdbl ! Only rotate winds for Lambert conformal or polar stereographic if (map_proj == PROJ_LC .or. map_proj == PROJ_PS) then diff = obs_proj%stdlon - lon if (diff > 180.) then diff = diff - 360. else if (diff < -180.) then diff = diff + 360. end if ! Calculate the rotation angle, alpha, in radians if (map_proj == PROJ_LC) then alpha = diff * obs_proj%cone * rad_per_deg * obs_proj%hemi else alpha = diff * rad_per_deg * obs_proj%hemi end if udbl = v*sin(alpha) + u*cos(alpha) vdbl = v*cos(alpha) - u*sin(alpha) u = udbl v = vdbl endif END SUBROUTINE rotate_vector #endif !----------------------------------------------------------------------- ! End subroutines for in4dob !-----------------------------------------------------------------------