9 |
SUBROUTINE SUFLUX_SICE( |
SUBROUTINE SUFLUX_SICE( |
10 |
I PSA, FMASK, EMISloc, |
I PSA, FMASK, EMISloc, |
11 |
I Tsurf, dTskin, SSR, SLRD, |
I Tsurf, dTskin, SSR, SLRD, |
12 |
I T0, Q0, EnPrec, CDENVV, |
I T1, T0, Q0, DENVV, |
13 |
O SHF, EVAP, SLRU, |
O SHF, EVAP, SLRU, |
14 |
O Evp0, dEvp, Slr0, dSlr, sFlx, |
O Shf0, dShf, Evp0, dEvp, Slr0, dSlr, sFlx, |
15 |
O TSFC, TSKIN, |
O TSFC, TSKIN, |
16 |
I bi,bj,myThid) |
I bi,bj,myThid) |
17 |
|
|
52 |
C dTskin :: temp. correction for daily-cycle heating [K] |
C dTskin :: temp. correction for daily-cycle heating [K] |
53 |
C SSR :: sfc sw radiation (net flux) (2-dim) |
C SSR :: sfc sw radiation (net flux) (2-dim) |
54 |
C SLRD :: sfc lw radiation (downward flux)(2-dim) |
C SLRD :: sfc lw radiation (downward flux)(2-dim) |
55 |
|
C T1 :: near-surface air temperature (from Pot.temp) |
56 |
C T0 :: near-surface air temperature (2-dim) |
C T0 :: near-surface air temperature (2-dim) |
57 |
C Q0 :: near-surface sp. humidity [g/kg](2-dim) |
C Q0 :: near-surface sp. humidity [g/kg](2-dim) |
58 |
C EnPrec :: energy of precipitation (snow, rain temp) [J/g] |
C DENVV :: surface flux (sens,lat.) coeff. (=Rho*|V|) [kg/m2/s] |
|
C CDENVV :: sensible heat flux coefficient (2-dim) |
|
59 |
C-- Output: |
C-- Output: |
60 |
C SHF :: sensible heat flux (2-dim) |
C SHF :: sensible heat flux (2-dim) |
61 |
C EVAP :: evaporation [g/(m^2 s)] (2-dim) |
C EVAP :: evaporation [g/(m^2 s)] (2-dim) |
62 |
C SLRU :: sfc lw radiation (upward flux) (2-dim) |
C SLRU :: sfc lw radiation (upward flux) (2-dim) |
63 |
|
C Shf0 :: sensible heat flux over freezing surf. |
64 |
|
C dShf :: sensible heat flux derivative relative to surf. temp |
65 |
C Evp0 :: evaporation computed over freezing surface (Ts=0.oC) |
C Evp0 :: evaporation computed over freezing surface (Ts=0.oC) |
66 |
C dEvp :: evaporation derivative relative to surf. temp |
C dEvp :: evaporation derivative relative to surf. temp |
67 |
C Slr0 :: upward long wave radiation over freezing surf. |
C Slr0 :: upward long wave radiation over freezing surf. |
77 |
_RL PSA(NGP), FMASK(NGP), EMISloc |
_RL PSA(NGP), FMASK(NGP), EMISloc |
78 |
_RL Tsurf(NGP), dTskin(NGP) |
_RL Tsurf(NGP), dTskin(NGP) |
79 |
_RL SSR(NGP), SLRD(NGP) |
_RL SSR(NGP), SLRD(NGP) |
80 |
_RL T0(NGP), Q0(NGP), CDENVV(NGP), EnPrec(NGP) |
_RL T1(NGP), T0(NGP), Q0(NGP), DENVV(NGP) |
81 |
|
|
82 |
_RL SHF(NGP), EVAP(NGP), SLRU(NGP) |
_RL SHF(NGP), EVAP(NGP), SLRU(NGP) |
83 |
_RL Evp0(NGP), dEvp(NGP), Slr0(NGP), dSlr(NGP), sFlx(NGP,0:2) |
_RL Shf0(NGP), dShf(NGP), Evp0(NGP), dEvp(NGP) |
84 |
|
_RL Slr0(NGP), dSlr(NGP), sFlx(NGP,0:2) |
85 |
_RL TSFC(NGP), TSKIN(NGP) |
_RL TSFC(NGP), TSKIN(NGP) |
86 |
|
|
87 |
INTEGER bi,bj,myThid |
INTEGER bi,bj,myThid |
90 |
#ifdef ALLOW_AIM |
#ifdef ALLOW_AIM |
91 |
|
|
92 |
C-- Local variables: |
C-- Local variables: |
93 |
|
C CDENVV :: surf. heat flux (sens.,lat.) coeff including stability effect |
94 |
|
C ALHevp :: Latent Heat of evaporation |
95 |
|
_RL CDENVV(NGP), RDTH, FSSICE |
96 |
|
_RL ALHevp, Fstb0, dTstb, dFstb |
97 |
_RL QSAT0(NGP,2) |
_RL QSAT0(NGP,2) |
98 |
_RL QDUMMY(1), RDUMMY(1), TS2 |
_RL QDUMMY(1), RDUMMY(1), TS2 |
99 |
INTEGER J |
INTEGER J |
100 |
|
|
101 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
102 |
|
|
103 |
|
ALHevp = ALHC |
104 |
|
C Evap of snow/ice: account for Latent Heat of freezing : |
105 |
|
IF ( aim_energPrecip ) ALHevp = ALHC + ALHF |
106 |
|
|
107 |
C 1.5 Define effective skin temperature to compensate for |
C 1.5 Define effective skin temperature to compensate for |
108 |
C non-linearity of heat/moisture fluxes during the daily cycle |
C non-linearity of heat/moisture fluxes during the daily cycle |
109 |
|
|
114 |
TSFC(J)=273.16 _d 0 |
TSFC(J)=273.16 _d 0 |
115 |
ENDDO |
ENDDO |
116 |
|
|
|
|
|
117 |
C-- 2. Computation of fluxes over land and sea |
C-- 2. Computation of fluxes over land and sea |
118 |
|
|
119 |
C 2.1 Wind stress |
C 2.1 Stability correction |
120 |
|
|
121 |
C 2.2 Sensible heat flux (from clim. TS over land) |
RDTH = FSTAB/DTHETA |
122 |
|
|
123 |
DO J=1,NGP |
DO J=1,NGP |
124 |
SHF(J) = CDENVV(J)*CP*(TSKIN(J)-T0(J)) |
FSSICE=1.+MIN(DTHETA,MAX(-DTHETA,TSKIN(J)-T1(J)))*RDTH |
125 |
sFlx(J,0)= -CDENVV(J)*CP*(TSFC(J) -T0(J)) |
CDENVV(J)=CHS*DENVV(J)*FSSICE |
|
sFlx(J,1)= -SHF(J) |
|
|
sFlx(J,2)= -CDENVV(J)*CP |
|
126 |
ENDDO |
ENDDO |
127 |
|
|
128 |
C 2.3 Evaporation |
IF ( dTstab.GT.0. _d 0 ) THEN |
129 |
|
C- account for stability function derivative relative to Tsurf: |
130 |
|
C note: to avoid discontinuity in the derivative (because of min,max), compute |
131 |
|
C the derivative using the discrete form: F(Ts+dTstab)-F(Ts-dTstab)/2.dTstab |
132 |
|
DO J=1,NGP |
133 |
|
Fstb0 = 1.+MIN(DTHETA,MAX(-DTHETA,TSFC(J) -T1(J)))*RDTH |
134 |
|
Shf0(J) = CHS*DENVV(J)*Fstb0 |
135 |
|
dTstb = ( DTHETA+dTstab-ABS(TSKIN(J)-T1(J)) )/dTstab |
136 |
|
dFstb = RDTH*MIN(1. _d 0, MAX(0. _d 0, dTstb*0.5 _d 0)) |
137 |
|
dShf(J) = CHS*DENVV(J)*dFstb |
138 |
|
ENDDO |
139 |
|
C- deBug part: |
140 |
|
c J = 6 + (17-1)*sNx |
141 |
|
c IF ( bi.EQ.3 .AND. J.LE.NGP ) |
142 |
|
c & WRITE(6,1020)'SUFLUX_SICE: Stab=',Shf0(J),CDENVV(J),dShf(J) |
143 |
|
ENDIF |
144 |
|
|
145 |
|
C 2.2 Evaporation |
146 |
|
|
147 |
CALL SHTORH (2, NGP, TSKIN, PSA, 1. _d 0, QDUMMY, dEvp, |
CALL SHTORH (2, NGP, TSKIN, PSA, 1. _d 0, QDUMMY, dEvp, |
148 |
& QSAT0(1,1), myThid) |
& QSAT0(1,1), myThid) |
149 |
CALL SHTORH (0, NGP, TSFC, PSA, 1. _d 0, QDUMMY, RDUMMY, |
CALL SHTORH (0, NGP, TSFC, PSA, 1. _d 0, QDUMMY, RDUMMY, |
150 |
& QSAT0(1,2), myThid) |
& QSAT0(1,2), myThid) |
151 |
|
|
152 |
DO J=1,NGP |
IF ( dTstab.GT.0. _d 0 ) THEN |
153 |
|
C- account for stability function derivative relative to Tsurf: |
154 |
|
DO J=1,NGP |
155 |
|
EVAP(J) = CDENVV(J)*(QSAT0(J,1)-Q0(J)) |
156 |
|
Evp0(J) = Shf0(J)*(QSAT0(J,2)-Q0(J)) |
157 |
|
dEvp(J) = CDENVV(J)*dEvp(J) |
158 |
|
& + dShf(J)*(QSAT0(J,1)-Q0(J)) |
159 |
|
ENDDO |
160 |
|
ELSE |
161 |
|
DO J=1,NGP |
162 |
EVAP(J) = CDENVV(J)*(QSAT0(J,1)-Q0(J)) |
EVAP(J) = CDENVV(J)*(QSAT0(J,1)-Q0(J)) |
163 |
Evp0(J) = CDENVV(J)*(QSAT0(J,2)-Q0(J)) |
Evp0(J) = CDENVV(J)*(QSAT0(J,2)-Q0(J)) |
164 |
dEvp(J) = CDENVV(J)*dEvp(J) |
dEvp(J) = CDENVV(J)*dEvp(J) |
165 |
ENDDO |
ENDDO |
166 |
|
ENDIF |
167 |
|
|
168 |
|
C 2.3 Sensible heat flux |
169 |
|
|
170 |
|
IF ( dTstab.GT.0. _d 0 ) THEN |
171 |
|
C- account for stability function derivative relative to Tsurf: |
172 |
|
DO J=1,NGP |
173 |
|
SHF(J) = CDENVV(J)*CP*(TSKIN(J)-T0(J)) |
174 |
|
Shf0(J) = Shf0(J)*CP*(TSFC(J) -T0(J)) |
175 |
|
dShf(J) = CDENVV(J)*CP |
176 |
|
& + dShf(J)*CP*(TSKIN(J)-T0(J)) |
177 |
|
dShf(J) = MAX( dShf(J), 0. _d 0 ) |
178 |
|
C-- do not allow negative derivative vs Ts of Sensible+Latent H.flux: |
179 |
|
C a) quiet unrealistic ; |
180 |
|
C b) garantee positive deriv. of total H.flux (needed for implicit solver) |
181 |
|
dEvp(J) = MAX( dEvp(J), -dShf(J)/ALHevp ) |
182 |
|
ENDDO |
183 |
|
ELSE |
184 |
|
DO J=1,NGP |
185 |
|
SHF(J) = CDENVV(J)*CP*(TSKIN(J)-T0(J)) |
186 |
|
Shf0(J) = CDENVV(J)*CP*(TSFC(J) -T0(J)) |
187 |
|
dShf(J) = CDENVV(J)*CP |
188 |
|
ENDDO |
189 |
|
ENDIF |
190 |
|
|
191 |
C 2.4 Emission of lw radiation from the surface |
C 2.4 Emission of lw radiation from the surface |
192 |
|
|
200 |
|
|
201 |
C-- Compute net surface heat flux and its derivative ./. surf. temp. |
C-- Compute net surface heat flux and its derivative ./. surf. temp. |
202 |
DO J=1,NGP |
DO J=1,NGP |
203 |
sFlx(J,0)= sFlx(J,0) |
sFlx(J,0)= ( SLRD(J) - EMISloc*Slr0(J) ) |
204 |
& - ALHC*Evp0(J) - EMISloc*Slr0(J) + SLRD(J) |
& - ( Shf0(J) + ALHevp*Evp0(J) ) |
205 |
sFlx(J,1)= sFlx(J,1) |
sFlx(J,1)= ( SLRD(J) - EMISloc*SLRU(J) ) |
206 |
& - ALHC*EVAP(J) - EMISloc*SLRU(J) + SLRD(J) |
& - ( SHF(J) + ALHevp*EVAP(J) ) |
207 |
sFlx(J,2)= sFlx(J,2) |
sFlx(J,2)= -EMISloc*dSlr(J) |
208 |
& - ALHC*dEvp(J) - EMISloc*dSlr(J) |
& - ( dShf(J) + ALHevp*dEvp(J) ) |
209 |
ENDDO |
ENDDO |
210 |
IF ( aim_energPrecip ) THEN |
|
211 |
C- Evap of snow/ice: substract Latent Heat of freezing from heatFlux |
C- deBug part: ----------------- |
212 |
DO J=1,NGP |
c1010 FORMAT(A,I3,2F10.3,F10.4) |
213 |
sFlx(J,0) = sFlx(J,0) - ALHF*Evp0(J) |
c1020 FORMAT(A,1P4E11.3) |
214 |
sFlx(J,1) = sFlx(J,1) - ALHF*EVAP(J) |
c J = 6 + (17-1)*sNx |
215 |
sFlx(J,2) = sFlx(J,2) - ALHF*dEvp(J) |
c IF ( bi.EQ.3 .AND. J.LE.NGP ) THEN |
216 |
ENDDO |
c WRITE(6,1010) 'SUFLUX_SICE: 1,sFlx=', 1, |
217 |
ENDIF |
c & sFlx(J,0),sFlx(J,1),sFlx(J,2) |
218 |
|
c WRITE(6,1010) 'SUFLUX_SICE: 0,Evap=', 0,Evp0(J),EVAP(J),dEvp(J) |
219 |
|
c WRITE(6,1010) 'SUFLUX_SICE: -,LWup=',-1,Slr0(J),SLRU(J),dSlr(J) |
220 |
|
c WRITE(6,1010) 'SUFLUX_SICE: -, SHF=',-1,Shf0(J),SHF(J), dShf(J) |
221 |
|
c WRITE(6,1010) 'SUFLUX_SICE: -, LAT=',-1, |
222 |
|
c & ALHevp*Evp0(J),ALHevp*EVAP(J),ALHevp*dEvp(J) |
223 |
|
c ENDIF |
224 |
|
|
225 |
C-- 3. Adjustment of skin temperature and fluxes over land |
C-- 3. Adjustment of skin temperature and fluxes over land |
226 |
C-- based on energy balance (to be implemented) |
C-- based on energy balance (to be implemented) |