21 |
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22 |
C == Global variables === |
C == Global variables === |
23 |
C-- size for MITgcm & Land package : |
C-- size for MITgcm & Land package : |
24 |
#include "LAND_SIZE.h" |
#include "LAND_SIZE.h" |
25 |
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|
26 |
#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
27 |
#include "LAND_PARAMS.h" |
#include "LAND_PARAMS.h" |
69 |
C dhSnow :: effective snow increase [m] |
C dhSnow :: effective snow increase [m] |
70 |
C mIceDt :: ground-ice growth rate (<- excess of snow) [kg/m2/s] |
C mIceDt :: ground-ice growth rate (<- excess of snow) [kg/m2/s] |
71 |
C ageFac :: snow aging factor [1] |
C ageFac :: snow aging factor [1] |
72 |
_RL grd_HeatCp, enthalpGrdW |
_RL grd_HeatCp, enthalpGrdW |
73 |
_RL fieldCapac, mWater |
_RL fieldCapac, mWater |
74 |
_RL groundWnp1, grdWexcess, fractRunOff |
_RL groundWnp1, grdWexcess, fractRunOff |
75 |
_RL flxkup(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL flxkup(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
76 |
_RL flxkdw(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL flxkdw(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
77 |
_RL flxEngU(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL flxEngU(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
78 |
_RL flxEngL, temp_af, temp_bf, mPmE, enWfx, enGr1 |
_RL flxEngL, temp_af, temp_bf, mPmE, enWfx, enGr1 |
79 |
_RL mSnow, dMsn, snowPrec |
_RL mSnow, dMsn, snowPrec |
80 |
_RL hNewSnow, dhSnowMx, dhSnow, mIceDt, ageFac |
_RL hNewSnow, dhSnowMx, dhSnow, mIceDt, ageFac |
81 |
INTEGER i,j,k,kp1 |
INTEGER i,j,k,kp1 |
82 |
|
|
114 |
flxkdw(i,j) = land_grdLambda* |
flxkdw(i,j) = land_grdLambda* |
115 |
& ( land_groundT(i,j,k,bi,bj) |
& ( land_groundT(i,j,k,bi,bj) |
116 |
& -land_groundT(i,j,kp1,bi,bj) ) |
& -land_groundT(i,j,kp1,bi,bj) ) |
117 |
& *land_rec_dzC(kp1) |
& *land_rec_dzC(kp1) |
118 |
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|
119 |
C- Step forward ground enthalpy, level k : |
C- Step forward ground enthalpy, level k : |
120 |
land_enthalp(i,j,k,bi,bj) = land_enthalp(i,j,k,bi,bj) |
land_enthalp(i,j,k,bi,bj) = land_enthalp(i,j,k,bi,bj) |
121 |
& + land_deltaT * (flxkup(i,j)-flxkdw(i,j))/land_dzF(k) |
& + land_deltaT * (flxkup(i,j)-flxkdw(i,j))/land_dzF(k) |
157 |
temp_bf = (land_enthalp(i,j,k,bi,bj)+land_Lfreez*mWater) |
temp_bf = (land_enthalp(i,j,k,bi,bj)+land_Lfreez*mWater) |
158 |
& / grd_HeatCp |
& / grd_HeatCp |
159 |
temp_af = land_enthalp(i,j,k,bi,bj) / grd_HeatCp |
temp_af = land_enthalp(i,j,k,bi,bj) / grd_HeatCp |
160 |
land_groundT(i,j,k,bi,bj) = |
land_groundT(i,j,k,bi,bj) = |
161 |
& MIN( temp_bf, MAX(temp_af, 0. _d 0) ) |
& MIN( temp_bf, MAX(temp_af, 0. _d 0) ) |
162 |
#ifdef LAND_DEBUG |
#ifdef LAND_DEBUG |
163 |
dBug = bi.eq.lprt .AND. i.EQ.iprt .AND. j.EQ.jprt |
dBug = bi.eq.lprt .AND. i.EQ.iprt .AND. j.EQ.jprt |
187 |
& mPmE,enWfx,enGr1/land_deltaT,land_hSnow(i,j,bi,bj) |
& mPmE,enWfx,enGr1/land_deltaT,land_hSnow(i,j,bi,bj) |
188 |
#endif |
#endif |
189 |
C- snow aging: |
C- snow aging: |
190 |
land_snowAge(i,j,bi,bj) = |
land_snowAge(i,j,bi,bj) = |
191 |
& ( land_deltaT + land_snowAge(i,j,bi,bj)*ageFac ) |
& ( land_deltaT + land_snowAge(i,j,bi,bj)*ageFac ) |
192 |
IF ( enWfx.LT.0. ) THEN |
IF ( enWfx.LT.0. ) THEN |
193 |
C- snow precip in excess ( > Evap of snow) or snow prec & Evap of Liq.Water: |
C- snow precip in excess ( > Evap of snow) or snow prec & Evap of Liq.Water: |
194 |
C => start to melt (until ground at freezing point) and then accumulate |
C => start to melt (until ground at freezing point) and then accumulate |
195 |
snowPrec = -enWfx -MAX( enGr1/land_deltaT, 0. _d 0 ) |
snowPrec = -enWfx -MAX( enGr1/land_deltaT, 0. _d 0 ) |
196 |
C- snow accumulation cannot be larger that net precip |
C- snow accumulation cannot be larger that net precip |
197 |
snowPrec = MAX( 0. _d 0 , |
snowPrec = MAX( 0. _d 0 , |
205 |
C- update snow thickness: |
C- update snow thickness: |
206 |
c land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) + hNewSnow |
c land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) + hNewSnow |
207 |
C glacier & ice-sheet missing: excess of snow put directly into run-off |
C glacier & ice-sheet missing: excess of snow put directly into run-off |
208 |
dhSnowMx = MAX( 0. _d 0, |
dhSnowMx = MAX( 0. _d 0, |
209 |
& land_hMaxSnow - land_hSnow(i,j,bi,bj) ) |
& land_hMaxSnow - land_hSnow(i,j,bi,bj) ) |
210 |
dhSnow = MIN( hNewSnow, dhSnowMx ) |
dhSnow = MIN( hNewSnow, dhSnowMx ) |
211 |
land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) + dhSnow |
land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) + dhSnow |
212 |
mIceDt = land_rhoSnow * (hNewSnow-dhSnow) / land_deltaT |
mIceDt = land_rhoSnow * (hNewSnow-dhSnow) / land_deltaT |
213 |
land_runOff(i,j,bi,bj) = mIceDt/land_rhoLiqW |
land_runOff(i,j,bi,bj) = mIceDt |
214 |
land_enRnOf(i,j,bi,bj) = -mIceDt*land_Lfreez |
land_enRnOf(i,j,bi,bj) = -mIceDt*land_Lfreez |
215 |
#ifdef LAND_DEBUG |
#ifdef LAND_DEBUG |
216 |
IF (dBug) write(6,1010) |
IF (dBug) write(6,1010) |
231 |
ELSE |
ELSE |
232 |
flxEngU(i,j) = 0. _d 0 |
flxEngU(i,j) = 0. _d 0 |
233 |
land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) |
land_hSnow(i,j,bi,bj) = land_hSnow(i,j,bi,bj) |
234 |
& - dMsn / land_rhoSnow |
& - dMsn / land_rhoSnow |
235 |
ENDIF |
ENDIF |
236 |
c IF (mPmE.GT.0.) land_snowAge(i,j,bi,bj) = timeSnowAge |
c IF (mPmE.GT.0.) land_snowAge(i,j,bi,bj) = timeSnowAge |
237 |
mPmE = mPmE + dMsn/land_deltaT |
mPmE = mPmE + dMsn/land_deltaT |
245 |
c land_Pr_m_Ev(i,j,bi,bj) = mPmE |
c land_Pr_m_Ev(i,j,bi,bj) = mPmE |
246 |
IF ( land_hSnow(i,j,bi,bj).LE. 0. _d 0 ) |
IF ( land_hSnow(i,j,bi,bj).LE. 0. _d 0 ) |
247 |
& land_snowAge(i,j,bi,bj) = 0. _d 0 |
& land_snowAge(i,j,bi,bj) = 0. _d 0 |
248 |
C- avoid negative (but very small, < 1.e-34) hSnow that occurs because |
C- avoid negative (but very small, < 1.e-34) hSnow that occurs because |
249 |
C of truncation error. Might need to rewrite this part. |
C of truncation error. Might need to rewrite this part. |
250 |
c IF ( land_hSnow(i,j,bi,bj).LE. 0. _d 0 ) THEN |
c IF ( land_hSnow(i,j,bi,bj).LE. 0. _d 0 ) THEN |
251 |
c land_hSnow(i,j,bi,bj) = 0. _d 0 |
c land_hSnow(i,j,bi,bj) = 0. _d 0 |
301 |
ELSE |
ELSE |
302 |
C- Frozen level: incoming water flux goes directly into run-off |
C- Frozen level: incoming water flux goes directly into run-off |
303 |
land_runOff(i,j,bi,bj) = land_runOff(i,j,bi,bj) |
land_runOff(i,j,bi,bj) = land_runOff(i,j,bi,bj) |
304 |
& + flxkup(i,j) |
& + flxkup(i,j)*land_rhoLiqW |
305 |
land_enRnOf(i,j,bi,bj) = land_enRnOf(i,j,bi,bj) |
land_enRnOf(i,j,bi,bj) = land_enRnOf(i,j,bi,bj) |
306 |
& + flxEngU(i,j) |
& + flxEngU(i,j) |
307 |
ENDIF |
ENDIF |
333 |
& *land_groundT(i,j,kp1,bi,bj) |
& *land_groundT(i,j,kp1,bi,bj) |
334 |
ENDIF |
ENDIF |
335 |
ENDIF |
ENDIF |
336 |
|
|
337 |
C- Step forward soil moisture, level k : |
C- Step forward soil moisture, level k : |
338 |
groundWnp1 = land_groundW(i,j,k,bi,bj) |
groundWnp1 = land_groundW(i,j,k,bi,bj) |
339 |
& + land_deltaT * (flxkup(i,j)-flxkdw(i,j)) / fieldCapac |
& + land_deltaT * (flxkup(i,j)-flxkdw(i,j)) / fieldCapac |
351 |
|
|
352 |
C- Run off: fraction 1-fractRunOff enters level below |
C- Run off: fraction 1-fractRunOff enters level below |
353 |
land_runOff(i,j,bi,bj) = land_runOff(i,j,bi,bj) |
land_runOff(i,j,bi,bj) = land_runOff(i,j,bi,bj) |
354 |
& + fractRunOff*grdWexcess |
& + fractRunOff*grdWexcess*land_rhoLiqW |
355 |
C- prepare fluxes for next level: |
C- prepare fluxes for next level: |
356 |
flxkup(i,j) = flxkdw(i,j) |
flxkup(i,j) = flxkdw(i,j) |
357 |
& + (1. _d 0-fractRunOff)*grdWexcess |
& + (1. _d 0-fractRunOff)*grdWexcess |
361 |
& *land_groundT(i,j,k,bi,bj) |
& *land_groundT(i,j,k,bi,bj) |
362 |
C-- Account for water fluxes in energy budget: update ground Enthalpy |
C-- Account for water fluxes in energy budget: update ground Enthalpy |
363 |
land_enthalp(i,j,k,bi,bj) = land_enthalp(i,j,k,bi,bj) |
land_enthalp(i,j,k,bi,bj) = land_enthalp(i,j,k,bi,bj) |
364 |
& + ( flxEngU(i,j) - flxEngL - grdWexcess*enthalpGrdW |
& + ( flxEngU(i,j) - flxEngL - grdWexcess*enthalpGrdW |
365 |
& )*land_deltaT/land_dzF(k) |
& )*land_deltaT/land_dzF(k) |
366 |
|
|
367 |
land_enRnOf(i,j,bi,bj) = land_enRnOf(i,j,bi,bj) |
land_enRnOf(i,j,bi,bj) = land_enRnOf(i,j,bi,bj) |
408 |
C temperature above freezing: |
C temperature above freezing: |
409 |
temp_af = land_enthalp(i,j,k,bi,bj) / grd_HeatCp |
temp_af = land_enthalp(i,j,k,bi,bj) / grd_HeatCp |
410 |
#ifdef LAND_OLD_VERSION |
#ifdef LAND_OLD_VERSION |
411 |
land_enthalp(i,j,k,bi,bj) = |
land_enthalp(i,j,k,bi,bj) = |
412 |
& grd_HeatCp*land_groundT(i,j,k,bi,bj) |
& grd_HeatCp*land_groundT(i,j,k,bi,bj) |
413 |
#else |
#else |
414 |
land_groundT(i,j,k,bi,bj) = |
land_groundT(i,j,k,bi,bj) = |
415 |
& MIN( temp_bf, MAX(temp_af, 0. _d 0) ) |
& MIN( temp_bf, MAX(temp_af, 0. _d 0) ) |
416 |
#endif |
#endif |
417 |
ENDDO |
ENDDO |
428 |
ENDIF |
ENDIF |
429 |
ENDDO |
ENDDO |
430 |
ENDDO |
ENDDO |
431 |
ELSE |
ELSE |
432 |
DO j=1,sNy |
DO j=1,sNy |
433 |
DO i=1,sNx |
DO i=1,sNx |
434 |
land_skinT(i,j,bi,bj) = land_groundT(i,j,1,bi,bj) |
land_skinT(i,j,bi,bj) = land_groundT(i,j,1,bi,bj) |