10 |
ffonte, run_off_lic_0) |
ffonte, run_off_lic_0) |
11 |
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12 |
! Routine de traitement de la fonte de la neige dans le cas du traitement |
! Routine de traitement de la fonte de la neige dans le cas du traitement |
13 |
! de sol simplifié |
! de sol simplifi\'e |
14 |
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15 |
! LF 03/2001 |
! LF 03/2001 |
16 |
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17 |
USE fcttre, ONLY: dqsatl, dqsats, foede, foeew, qsatl, qsats, thermcep |
USE fcttre, ONLY: foeew, qsatl, qsats, thermcep |
18 |
USE indicesol, ONLY: epsfra, is_lic, is_sic, is_ter |
USE indicesol, ONLY: epsfra, is_lic, is_sic, is_ter |
19 |
USE interface_surf, ONLY: run_off, run_off_lic, tau_calv |
USE interface_surf, ONLY: run_off, run_off_lic, tau_calv |
20 |
use nr_util, only: assert_eq |
use nr_util, only: assert_eq |
21 |
USE suphec_m, ONLY: rcpd, rd, rday, retv, rkappa, rlmlt, rlstt, rlvtt, rtt |
USE suphec_m, ONLY: rcpd, rday, retv, rlmlt, rlstt, rlvtt, rtt |
22 |
USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2 |
USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2 |
23 |
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24 |
integer, intent(IN):: nisurf ! surface à traiter |
integer, intent(IN):: nisurf ! surface \`a traiter |
25 |
real, intent(IN):: dtime ! pas de temps de la physique (en s) |
real, intent(IN):: dtime ! pas de temps de la physique (en s) |
26 |
real, dimension(:), intent(IN):: tsurf, p1lay, beta, coef1lay ! (knon) |
real, dimension(:), intent(IN):: tsurf, p1lay, beta, coef1lay ! (knon) |
27 |
! tsurf temperature de surface |
! tsurf temperature de surface |
66 |
real, intent(OUT):: ffonte(:) ! (knon) |
real, intent(OUT):: ffonte(:) ! (knon) |
67 |
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68 |
real, dimension(:), intent(INOUT):: run_off_lic_0 ! (knon) |
real, dimension(:), intent(INOUT):: run_off_lic_0 ! (knon) |
69 |
! run_off_lic_0 run off glacier du pas de temps précedent |
! run_off_lic_0 run off glacier du pas de temps pr\'ecedent |
70 |
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71 |
! Local: |
! Local: |
72 |
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73 |
integer knon ! nombre de points à traiter |
integer knon ! nombre de points \`a traiter |
74 |
real, parameter:: snow_max=3000. |
real, parameter:: snow_max=3000. |
75 |
! Masse maximum de neige (kg/m2). Au dessus de ce seuil, la neige |
! Masse maximum de neige (kg/m2). Au dessus de ce seuil, la neige |
76 |
! en exces "s'ecoule" (calving) |
! en exces "s'ecoule" (calving) |
77 |
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78 |
integer i |
integer i |
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real, dimension(size(ps)):: zx_mh, zx_nh, zx_oh |
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real, dimension(size(ps)):: zx_mq, zx_nq, zx_oq |
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real, dimension(size(ps)):: zx_pkh, zx_dq_s_dt, zx_qsat, zx_coef |
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real, dimension(size(ps)):: zx_sl, zx_k1 |
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real, dimension(size(ps)):: d_ts |
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79 |
logical zdelta |
logical zdelta |
80 |
real zcvm5, zx_qs, zcor, zx_dq_s_dh |
real zcvm5, zx_qs, zcor |
81 |
real fq_fonte |
real fq_fonte |
82 |
REAL bil_eau_s(size(ps)) ! in kg m-2 |
REAL bil_eau_s(size(ps)) ! in kg m-2 |
83 |
real snow_evap(size(ps)) ! in kg m-2 s-1 |
real snow_evap(size(ps)) ! in kg m-2 s-1 |
100 |
coeff_rel = dtime/(tau_calv * rday) |
coeff_rel = dtime/(tau_calv * rday) |
101 |
bil_eau_s = 0. |
bil_eau_s = 0. |
102 |
DO i = 1, knon |
DO i = 1, knon |
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zx_pkh(i) = (ps(i)/ps(i))**RKAPPA |
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103 |
IF (thermcep) THEN |
IF (thermcep) THEN |
104 |
zdelta= rtt >= tsurf(i) |
zdelta= rtt >= tsurf(i) |
105 |
zcvm5 = merge(R5IES*RLSTT, R5LES*RLVTT, zdelta) |
zcvm5 = merge(R5IES*RLSTT, R5LES*RLVTT, zdelta) |
108 |
zx_qs=MIN(0.5, zx_qs) |
zx_qs=MIN(0.5, zx_qs) |
109 |
zcor=1./(1.-retv*zx_qs) |
zcor=1./(1.-retv*zx_qs) |
110 |
zx_qs=zx_qs*zcor |
zx_qs=zx_qs*zcor |
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zx_dq_s_dh = FOEDE(tsurf(i), zdelta, zcvm5, zx_qs, zcor) /RLVTT & |
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/ zx_pkh(i) |
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111 |
ELSE |
ELSE |
112 |
IF (tsurf(i) < t_coup) THEN |
IF (tsurf(i) < t_coup) THEN |
113 |
zx_qs = qsats(tsurf(i)) / ps(i) |
zx_qs = qsats(tsurf(i)) / ps(i) |
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zx_dq_s_dh = dqsats(tsurf(i), zx_qs)/RLVTT / zx_pkh(i) |
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114 |
ELSE |
ELSE |
115 |
zx_qs = qsatl(tsurf(i)) / ps(i) |
zx_qs = qsatl(tsurf(i)) / ps(i) |
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zx_dq_s_dh = dqsatl(tsurf(i), zx_qs)/RLVTT / zx_pkh(i) |
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116 |
ENDIF |
ENDIF |
117 |
ENDIF |
ENDIF |
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zx_dq_s_dt(i) = RCPD * zx_pkh(i) * zx_dq_s_dh |
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zx_qsat(i) = zx_qs |
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zx_coef(i) = coef1lay(i) * (1. + SQRT(u1lay(i)**2 + v1lay(i)**2)) & |
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* p1lay(i) / (RD * t1lay(i)) |
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118 |
ENDDO |
ENDDO |
119 |
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120 |
! Calcul de la temperature de surface |
! Calcul de la temperature de surface |
121 |
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! zx_sl = chaleur latente d'evaporation ou de sublimation |
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do i = 1, knon |
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zx_sl(i) = RLVTT |
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if (tsurf(i) < RTT) zx_sl(i) = RLSTT |
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zx_k1(i) = zx_coef(i) |
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enddo |
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do i = 1, knon |
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! Q |
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zx_oq(i) = 1. - (beta(i) * zx_k1(i) * peqBcoef(i) * dtime) |
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zx_mq(i) = beta(i) * zx_k1(i) * (peqAcoef(i) - zx_qsat(i) & |
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+ zx_dq_s_dt(i) * tsurf(i)) / zx_oq(i) |
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zx_nq(i) = beta(i) * zx_k1(i) * (-1. * zx_dq_s_dt(i)) / zx_oq(i) |
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! H |
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zx_oh(i) = 1. - (zx_k1(i) * petBcoef(i) * dtime) |
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zx_mh(i) = zx_k1(i) * petAcoef(i) / zx_oh(i) |
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zx_nh(i) = - (zx_k1(i) * RCPD * zx_pkh(i))/ zx_oh(i) |
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enddo |
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122 |
WHERE (precip_snow > 0.) snow = snow + precip_snow * dtime |
WHERE (precip_snow > 0.) snow = snow + precip_snow * dtime |
123 |
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124 |
WHERE (evap > 0.) |
WHERE (evap > 0.) |
149 |
bil_eau_s(i) = bil_eau_s(i) + fq_fonte |
bil_eau_s(i) = bil_eau_s(i) + fq_fonte |
150 |
tsurf_new(i) = RTT |
tsurf_new(i) = RTT |
151 |
ENDIF |
ENDIF |
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d_ts(i) = tsurf_new(i) - tsurf(i) |
|
152 |
endif |
endif |
153 |
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154 |
! S'il y a une hauteur trop importante de neige, elle s'écoule |
! S'il y a une hauteur trop importante de neige, elle s'\'ecoule |
155 |
fqcalving(i) = max(0., snow(i) - snow_max)/dtime |
fqcalving(i) = max(0., snow(i) - snow_max)/dtime |
156 |
snow(i)=min(snow(i), snow_max) |
snow(i)=min(snow(i), snow_max) |
157 |
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