| 1 | ! $Id: aeropt.F90 5144 2024-07-29 21:01:04Z abarral $ |
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| 2 | |
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| 3 | SUBROUTINE aeropt(pplay, paprs, t_seri, msulfate, rhcl, tau_ae, piz_ae, & |
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| 4 | cg_ae, ai) |
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| 5 | |
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| 6 | USE dimphy |
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| 7 | USE lmdz_abort_physic, ONLY: abort_physic |
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| 8 | USE lmdz_yomcst |
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| 9 | |
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| 10 | IMPLICIT NONE |
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| 11 | |
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| 12 | ! Arguments: |
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| 13 | |
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| 14 | REAL, INTENT (IN) :: paprs(klon, klev + 1) |
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| 15 | REAL, INTENT (IN) :: pplay(klon, klev), t_seri(klon, klev) |
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| 16 | REAL, INTENT (IN) :: msulfate(klon, klev) ! masse sulfate ug SO4/m3 [ug/m^3] |
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| 17 | REAL, INTENT (IN) :: rhcl(klon, klev) ! humidite relative ciel clair |
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| 18 | REAL, INTENT (OUT) :: tau_ae(klon, klev, 2) ! epaisseur optique aerosol |
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| 19 | REAL, INTENT (OUT) :: piz_ae(klon, klev, 2) ! single scattering albedo aerosol |
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| 20 | REAL, INTENT (OUT) :: cg_ae(klon, klev, 2) ! asymmetry parameter aerosol |
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| 21 | REAL, INTENT (OUT) :: ai(klon) ! POLDER aerosol index |
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| 22 | |
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| 23 | ! Local |
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| 24 | |
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| 25 | INTEGER i, k, inu |
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| 26 | INTEGER rh_num, nbre_rh |
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| 27 | PARAMETER (nbre_rh = 12) |
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| 28 | REAL rh_tab(nbre_rh) |
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| 29 | REAL rh_max, delta, rh |
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| 30 | PARAMETER (rh_max = 95.) |
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| 31 | DATA rh_tab/0., 10., 20., 30., 40., 50., 60., 70., 80., 85., 90., 95./ |
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| 32 | REAL zrho, zdz |
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| 33 | REAL taue670(klon) ! epaisseur optique aerosol absorption 550 nm |
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| 34 | REAL taue865(klon) ! epaisseur optique aerosol extinction 865 nm |
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| 35 | REAL alpha_aer_sulfate(nbre_rh, 5) !--unit m2/g SO4 |
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| 36 | REAL alphasulfate |
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| 37 | |
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| 38 | CHARACTER (LEN = 20) :: modname = 'aeropt' |
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| 39 | CHARACTER (LEN = 80) :: abort_message |
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| 40 | |
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| 41 | |
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| 42 | ! Proprietes optiques |
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| 43 | |
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| 44 | REAL alpha_aer(nbre_rh, 2) !--unit m2/g SO4 |
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| 45 | REAL cg_aer(nbre_rh, 2) |
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| 46 | DATA alpha_aer/.500130E+01, .500130E+01, .500130E+01, .500130E+01, & |
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| 47 | .500130E+01, .616710E+01, .826850E+01, .107687E+02, .136976E+02, & |
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| 48 | .162972E+02, .211690E+02, .354833E+02, .139460E+01, .139460E+01, & |
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| 49 | .139460E+01, .139460E+01, .139460E+01, .173910E+01, .244380E+01, & |
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| 50 | .332320E+01, .440120E+01, .539570E+01, .734580E+01, .136038E+02/ |
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| 51 | DATA cg_aer/.619800E+00, .619800E+00, .619800E+00, .619800E+00, & |
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| 52 | .619800E+00, .662700E+00, .682100E+00, .698500E+00, .712500E+00, & |
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| 53 | .721800E+00, .734600E+00, .755800E+00, .545600E+00, .545600E+00, & |
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| 54 | .545600E+00, .545600E+00, .545600E+00, .583700E+00, .607100E+00, & |
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| 55 | .627700E+00, .645800E+00, .658400E+00, .676500E+00, .708500E+00/ |
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| 56 | DATA alpha_aer_sulfate/4.910, 4.910, 4.910, 4.910, 6.547, 7.373, 8.373, & |
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| 57 | 9.788, 12.167, 14.256, 17.924, 28.433, 1.453, 1.453, 1.453, 1.453, 2.003, & |
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| 58 | 2.321, 2.711, 3.282, 4.287, 5.210, 6.914, 12.305, 4.308, 4.308, 4.308, & |
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| 59 | 4.308, 5.753, 6.521, 7.449, 8.772, 11.014, 12.999, 16.518, 26.772, 3.265, & |
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| 60 | 3.265, 3.265, 3.265, 4.388, 5.016, 5.775, 6.868, 8.745, 10.429, 13.457, & |
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| 61 | 22.538, 2.116, 2.116, 2.116, 2.116, 2.882, 3.330, 3.876, 4.670, 6.059, & |
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| 62 | 7.327, 9.650, 16.883/ |
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| 63 | |
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| 64 | DO i = 1, klon |
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| 65 | taue670(i) = 0.0 |
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| 66 | taue865(i) = 0.0 |
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| 67 | END DO |
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| 68 | |
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| 69 | DO k = 1, klev |
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| 70 | DO i = 1, klon |
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| 71 | IF (t_seri(i, k)==0) WRITE (*, *) 'aeropt T ', i, k, t_seri(i, k) |
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| 72 | IF (pplay(i, k)==0) WRITE (*, *) 'aeropt p ', i, k, pplay(i, k) |
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| 73 | zrho = pplay(i, k) / t_seri(i, k) / rd ! kg/m3 |
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| 74 | zdz = (paprs(i, k) - paprs(i, k + 1)) / zrho / rg ! m |
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| 75 | rh = min(rhcl(i, k) * 100., rh_max) |
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| 76 | rh_num = int(rh / 10. + 1.) |
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| 77 | IF (rh<0.) THEN |
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| 78 | abort_message = 'aeropt: RH < 0 not possible' |
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| 79 | CALL abort_physic(modname, abort_message, 1) |
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| 80 | END IF |
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| 81 | IF (rh>85.) rh_num = 10 |
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| 82 | IF (rh>90.) rh_num = 11 |
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| 83 | delta = (rh - rh_tab(rh_num)) / (rh_tab(rh_num + 1) - rh_tab(rh_num)) |
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| 84 | |
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| 85 | inu = 1 |
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| 86 | tau_ae(i, k, inu) = alpha_aer(rh_num, inu) + delta * (alpha_aer(rh_num + 1, & |
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| 87 | inu) - alpha_aer(rh_num, inu)) |
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| 88 | tau_ae(i, k, inu) = tau_ae(i, k, inu) * msulfate(i, k) * zdz * 1.E-6 |
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| 89 | piz_ae(i, k, inu) = 1.0 |
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| 90 | cg_ae(i, k, inu) = cg_aer(rh_num, inu) + delta * (cg_aer(rh_num + 1, inu) - & |
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| 91 | cg_aer(rh_num, inu)) |
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| 92 | |
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| 93 | inu = 2 |
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| 94 | tau_ae(i, k, inu) = alpha_aer(rh_num, inu) + delta * (alpha_aer(rh_num + 1, & |
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| 95 | inu) - alpha_aer(rh_num, inu)) |
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| 96 | tau_ae(i, k, inu) = tau_ae(i, k, inu) * msulfate(i, k) * zdz * 1.E-6 |
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| 97 | piz_ae(i, k, inu) = 1.0 |
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| 98 | cg_ae(i, k, inu) = cg_aer(rh_num, inu) + delta * (cg_aer(rh_num + 1, inu) - & |
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| 99 | cg_aer(rh_num, inu)) |
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| 100 | ! jq |
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| 101 | ! jq for aerosol index |
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| 102 | |
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| 103 | alphasulfate = alpha_aer_sulfate(rh_num, 4) + & |
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| 104 | delta * (alpha_aer_sulfate(rh_num + 1, 4) - alpha_aer_sulfate(rh_num, 4)) !--m2/g |
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| 105 | |
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| 106 | taue670(i) = taue670(i) + alphasulfate * msulfate(i, k) * zdz * 1.E-6 |
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| 107 | |
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| 108 | alphasulfate = alpha_aer_sulfate(rh_num, 5) + & |
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| 109 | delta * (alpha_aer_sulfate(rh_num + 1, 5) - alpha_aer_sulfate(rh_num, 5)) !--m2/g |
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| 110 | |
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| 111 | taue865(i) = taue865(i) + alphasulfate * msulfate(i, k) * zdz * 1.E-6 |
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| 112 | |
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| 113 | END DO |
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| 114 | END DO |
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| 115 | |
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| 116 | DO i = 1, klon |
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| 117 | ai(i) = (-log(max(taue670(i), 0.0001) / max(taue865(i), & |
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| 118 | 0.0001)) / log(670. / 865.)) * taue865(i) |
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| 119 | END DO |
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| 120 | |
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| 121 | END SUBROUTINE aeropt |
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