/[lmdze]/trunk/phylmd/Interface_surf/calcul_fluxs.f90
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Annotation of /trunk/phylmd/Interface_surf/calcul_fluxs.f90

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Revision 279 - (hide annotations)
Fri Jul 20 14:30:23 2018 UTC (5 years, 11 months ago) by guez
Original Path: trunk/phylmd/Interface_surf/calcul_fluxs.f
File size: 4237 byte(s) 
fqcalving was saved in physiq and had intent inout in pbl_surface. So
we could set fqcalving to 0 only once per run. The point is fqcalving
must be defined everywhere for the computation of the average over all
surfaces, even values that get multiplied by pctsrf = 0. I find it
clearer to set fqcalving to 0 at every call of pbl_surface. This is
more expensive but allows to give intent out to fqcalving in
pbl_surface and remove the save attribute in physiq.

Add zxfqcalving output netCDF variable (following LMDZ).
1 guez 54 module calcul_fluxs_m
2    
3     implicit none
4    
5     contains
6    
7 guez 279 SUBROUTINE calcul_fluxs(dtime, tsurf, p1lay, cal, beta, coef1lay, ps, qsurf, &
8     radsol, dif_grnd, t1lay, q1lay, u1lay, v1lay, petAcoef, peqAcoef, &
9     petBcoef, peqBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, dflux_l)
10 guez 54
11 guez 207 ! Cette routine calcule les flux en h et q à l'interface et une
12 guez 99 ! température de surface.
13 guez 54
14 guez 214 ! L. Fairhead, April 2000
15 guez 54
16 guez 279 ! Note that, if cal = 0, beta = 1 and dif_grnd = 0, then tsurf_new
17     ! = tsurf and qsurf = qsat.
18    
19     use nr_util, only: assert_eq
20    
21 guez 221 USE fcttre, ONLY: foede, foeew
22 guez 178 USE suphec_m, ONLY: rcpd, rd, retv, rlstt, rlvtt, rtt
23 guez 104 USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2
24    
25     real, intent(IN):: dtime
26 guez 206 real, intent(IN):: tsurf(:) ! (knon) température de surface
27    
28     real, intent(IN):: p1lay(:) ! (knon)
29     ! pression première couche (milieu de couche)
30    
31 guez 104 real, intent(IN):: cal(:) ! (knon) capacité calorifique du sol
32 guez 206 real, intent(IN):: beta(:) ! (knon) évaporation réelle
33 guez 104 real, intent(IN):: coef1lay(:) ! (knon) coefficient d'échange
34     real, intent(IN):: ps(:) ! (knon) pression au sol
35 guez 206 real, intent(OUT):: qsurf(:) ! (knon) humidité de l'air au-dessus du sol
36 guez 104
37 guez 206 real, intent(IN):: radsol(:) ! (knon)
38     ! rayonnement net au sol (longwave + shortwave)
39    
40 guez 104 real, intent(IN):: dif_grnd(:) ! (knon)
41 guez 206 ! coefficient de diffusion vers le sol profond
42 guez 104
43     real, intent(IN):: t1lay(:), q1lay(:), u1lay(:), v1lay(:) ! (knon)
44    
45     real, intent(IN):: petAcoef(:), peqAcoef(:) ! (knon)
46 guez 206 ! coefficients A de la résolution de la couche limite pour T et q
47 guez 104
48     real, intent(IN):: petBcoef(:), peqBcoef(:) ! (knon)
49 guez 206 ! coefficients B de la résolution de la couche limite pour t et q
50 guez 54
51 guez 104 real, intent(OUT):: tsurf_new(:) ! (knon) température au sol
52 guez 171 real, intent(OUT):: evap(:) ! (knon)
53    
54 guez 206 real, intent(OUT):: fluxlat(:), flux_t(:) ! (knon)
55 guez 207 ! flux de chaleurs latente et sensible
56 guez 171
57 guez 104 real, intent(OUT):: dflux_s(:), dflux_l(:) ! (knon)
58 guez 171 ! dérivées des flux de chaleurs sensible et latente par rapport à
59     ! Ts (W m-2 K-1)
60 guez 54
61 guez 104 ! Local:
62     integer i
63 guez 279 integer knon ! nombre de points \`a traiter
64 guez 206 real, dimension(size(ps)):: mh, oh, mq, nq, oq, dq_s_dt, coef ! (knon)
65 guez 207 real qsat(size(ps)) ! (knon) mass fraction
66     real sl(size(ps)) ! (knon) chaleur latente d'évaporation ou de sublimation
67 guez 105 logical delta
68     real zcor
69 guez 207 real, parameter:: t_grnd = 271.35
70 guez 54
71 guez 104 !---------------------------------------------------------------------
72 guez 54
73 guez 279 knon = assert_eq([size(tsurf), size(p1lay), size(cal), size(beta), &
74 guez 104 size(coef1lay), size(ps), size(qsurf), size(radsol), size(dif_grnd), &
75     size(t1lay), size(q1lay), size(u1lay), size(v1lay), size(petAcoef), &
76     size(peqAcoef), size(petBcoef), size(peqBcoef), size(tsurf_new), &
77 guez 206 size(evap), size(fluxlat), size(flux_t), size(dflux_s), &
78 guez 279 size(dflux_l)], "calcul_fluxs knon")
79 guez 54
80 guez 206 ! Traitement de l'humidité du sol
81 guez 54
82 guez 207 DO i = 1, knon
83     delta = rtt >= tsurf(i)
84     qsat(i) = MIN(0.5, r2es * FOEEW(tsurf(i), delta) / ps(i))
85     zcor = 1. / (1. - retv * qsat(i))
86     qsat(i) = qsat(i) * zcor
87     dq_s_dt(i) = RCPD * FOEDE(tsurf(i), delta, merge(R5IES * RLSTT, &
88     R5LES * RLVTT, delta) / RCPD / (1. + RVTMP2 * q1lay(i)), &
89     qsat(i), zcor) / RLVTT
90     ENDDO
91 guez 54
92 guez 105 coef = coef1lay * (1. + SQRT(u1lay**2 + v1lay**2)) * p1lay / (RD * t1lay)
93     sl = merge(RLSTT, RLVTT, tsurf < RTT)
94 guez 54
95 guez 105 ! Q
96 guez 266 oq = 1. - beta * coef * peqBcoef * dtime
97 guez 105 mq = beta * coef * (peqAcoef - qsat + dq_s_dt * tsurf) / oq
98 guez 279 nq = - beta * coef * dq_s_dt / oq
99 guez 54
100 guez 105 ! H
101 guez 279 oh = 1. - coef * petBcoef * dtime
102 guez 105 mh = coef * petAcoef / oh
103 guez 279 dflux_s = - coef * RCPD / oh
104 guez 54
105 guez 105 tsurf_new = (tsurf + cal / RCPD * dtime * (radsol + mh + sl * mq) &
106     + dif_grnd * t_grnd * dtime) / (1. - dtime * cal / RCPD * (dflux_s &
107     + sl * nq) + dtime * dif_grnd)
108     evap = - mq - nq * tsurf_new
109     fluxlat = - evap * sl
110 guez 206 flux_t = mh + dflux_s * tsurf_new
111 guez 105 dflux_l = sl * nq
112     qsurf = (peqAcoef - peqBcoef * evap * dtime) * (1. - beta) + beta * (qsat &
113     + dq_s_dt * (tsurf_new - tsurf))
114 guez 54
115     END SUBROUTINE calcul_fluxs
116    
117     end module calcul_fluxs_m
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