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module aeropt_m |
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|
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IMPLICIT none |
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|
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contains |
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|
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SUBROUTINE aeropt(pplay, paprs, t_seri, msulfate, RHcl, tau_ae, piz_ae, & |
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cg_ae, ai) |
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|
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! From LMDZ4/libf/phylmd/aeropt.F, v 1.1.1.1 2004/05/19 12:53:09 |
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|
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! Author: Olivier Boucher |
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! Calculate aerosol optical properties. |
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|
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USE dimphy, ONLY: klev, klon |
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USE suphec_m, ONLY: rd, rg |
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|
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REAL, intent(in):: pplay(klon, klev), paprs(klon, klev + 1) |
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REAL, intent(in):: t_seri(klon, klev) |
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|
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REAL, intent(in):: msulfate(klon, klev) |
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! masse sulfate ug SO4 / m3 (ug / m^3) |
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|
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REAL, intent(in):: RHcl(klon, klev) ! humidité relative ciel clair |
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|
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REAL, intent(out):: tau_ae(klon, klev, 2) ! épaisseur optique aérosols |
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REAL, intent(out):: piz_ae(klon, klev, 2) ! single scattering albedo aerosol |
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REAL, intent(out):: cg_ae(klon, klev, 2) ! asymmetry parameter aerosol |
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REAL, intent(out):: ai(klon) ! POLDER aerosol index |
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|
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! Local: |
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|
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INTEGER i, k, inu |
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INTEGER RH_num |
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INTEGER, PARAMETER:: nbre_RH = 12 |
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|
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REAL:: RH_tab(nbre_RH) = (/0., 10., 20., 30., 40., 50., 60., 70., 80., & |
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85., 90., 95./) |
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|
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REAL DELTA, rh |
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REAL, PARAMETER:: RH_MAX = 95. |
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REAL zrho, zdz |
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REAL taue670(klon) ! épaisseur optique aerosol absorption 550 nm |
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REAL taue865(klon) ! épaisseur optique aerosol extinction 865 nm |
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REAL alpha_aer_sulfate(nbre_RH, 5) ! unit m2 / g SO4 |
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REAL alphasulfate |
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|
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! Propriétés optiques |
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|
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REAL alpha_aer(nbre_RH, 2) ! unit m2 / g SO4 |
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REAL cg_aer(nbre_RH, 2) |
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DATA alpha_aer/.500130E+01, .500130E+01, .500130E+01, & |
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.500130E+01, .500130E+01, .616710E+01, & |
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.826850E+01, .107687E+02, .136976E+02, & |
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.162972E+02, .211690E+02, .354833E+02, & |
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.139460E+01, .139460E+01, .139460E+01, & |
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.139460E+01, .139460E+01, .173910E+01, & |
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.244380E+01, .332320E+01, .440120E+01, & |
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.539570E+01, .734580E+01, .136038E+02 / |
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DATA cg_aer/.619800E+00, .619800E+00, .619800E+00, & |
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.619800E+00, .619800E+00, .662700E+00, & |
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.682100E+00, .698500E+00, .712500E+00, & |
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.721800E+00, .734600E+00, .755800E+00, & |
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.545600E+00, .545600E+00, .545600E+00, & |
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.545600E+00, .545600E+00, .583700E+00, & |
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.607100E+00, .627700E+00, .645800E+00, & |
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.658400E+00, .676500E+00, .708500E+00 / |
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DATA alpha_aer_sulfate/ & |
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4.910, 4.910, 4.910, 4.910, 6.547, 7.373, & |
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8.373, 9.788, 12.167, 14.256, 17.924, 28.433, & |
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1.453, 1.453, 1.453, 1.453, 2.003, 2.321, & |
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2.711, 3.282, 4.287, 5.210, 6.914, 12.305, & |
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4.308, 4.308, 4.308, 4.308, 5.753, 6.521, & |
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7.449, 8.772, 11.014, 12.999, 16.518, 26.772, & |
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3.265, 3.265, 3.265, 3.265, 4.388, 5.016, & |
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5.775, 6.868, 8.745, 10.429, 13.457, 22.538, & |
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2.116, 2.116, 2.116, 2.116, 2.882, 3.330, & |
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3.876, 4.670, 6.059, 7.327, 9.650, 16.883/ |
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|
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!---------------------------------------------------------------------- |
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|
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taue670 = 0. |
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taue865 = 0. |
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|
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DO k = 1, klev |
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DO i = 1, klon |
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if (t_seri(i, k).eq.0) write (*, *) 'aeropt T ', i, k, t_seri(i, k) |
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if (pplay(i, k).eq.0) write (*, *) 'aeropt p ', i, k, pplay(i, k) |
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zrho = pplay(i, k) / t_seri(i, k) / RD ! kg / m3 |
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zdz = (paprs(i, k) - paprs(i, k + 1)) / zrho / RG ! m |
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rh = MIN(RHcl(i, k) * 100., RH_MAX) |
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RH_num = INT(rh / 10. + 1.) |
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IF (rh < 0.) then |
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print *, 'aeropt: RH < 0 not possible' |
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STOP 1 |
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end IF |
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IF (rh > 85.) RH_num = 10 |
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IF (rh > 90.) RH_num = 11 |
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DELTA = (rh - RH_tab(RH_num)) / (RH_tab(RH_num + 1) - RH_tab(RH_num)) |
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|
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do inu = 1, 2 |
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tau_ae(i, k, inu) = alpha_aer(RH_num, inu) + DELTA & |
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* (alpha_aer(RH_num + 1, inu) - alpha_aer(RH_num, inu)) |
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tau_ae(i, k, inu) = tau_ae(i, k, inu) * msulfate(i, k) * zdz * 1e-6 |
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piz_ae(i, k, inu) = 1. |
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cg_ae(i, k, inu) = cg_aer(RH_num, inu) & |
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+ DELTA * (cg_aer(RH_num + 1, inu) - cg_aer(RH_num, inu)) |
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end do |
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|
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alphasulfate = alpha_aer_sulfate(RH_num, 4) + DELTA & |
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* (alpha_aer_sulfate(RH_num + 1, 4) & |
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- alpha_aer_sulfate(RH_num, 4)) ! m2 / g |
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taue670(i) = taue670(i) + alphasulfate * msulfate(i, k) * zdz * 1e-6 |
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alphasulfate = alpha_aer_sulfate(RH_num, 5) + DELTA & |
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* (alpha_aer_sulfate(RH_num + 1, 5) & |
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- alpha_aer_sulfate(RH_num, 5)) ! m2 / g |
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|
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taue865(i) = taue865(i) + alphasulfate * msulfate(i, k) * zdz * 1e-6 |
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ENDDO |
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ENDDO |
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|
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DO i = 1, klon |
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ai(i) = (- log(MAX(taue670(i), 0.0001) / MAX(taue865(i), 0.0001)) & |
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/ log(670. / 865.)) * taue865(i) |
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ENDDO |
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|
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END SUBROUTINE aeropt |
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|
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end module aeropt_m |
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