source: LMDZ6/branches/LMDZ_ECRad/libf/phylmd/ecrad/ifsrrtm/srtm_setcoef.F90 @ 4771

Last change on this file since 4771 was 4728, checked in by idelkadi, 13 months ago

Update of ecrad in the LMDZ_ECRad branch of LMDZ:

  • version 1.6.1 of ecrad
  • files are no longer grouped in the same ecrad directory.
  • the structure of ecrad offline is preserved to facilitate updating in LMDZ
  • cfg.bld modified to take into account the new added subdirectories.
  • the interface routines and those added in ecrad are moved to the phylmd directory
File size: 8.5 KB
Line 
1SUBROUTINE SRTM_SETCOEF &
2 & ( KIDIA   , KFDIA    , KLEV    ,&
3 &   PAVEL   , PTAVEL   ,&
4 &   PCOLDRY , PWKL     ,&
5 &   KLAYTROP,&
6 &   PCOLCH4  , PCOLCO2 , PCOLH2O , PCOLMOL  , PCOLO2 , PCOLO3 ,&
7 &   PFORFAC , PFORFRAC , KINDFOR , PSELFFAC, PSELFFRAC, KINDSELF ,&
8 &   PFAC00  , PFAC01   , PFAC10  , PFAC11  ,&
9 &   KJP     , KJT      , KJT1    , PRMU0    &
10 & ) 
11
12!     J. Delamere, AER, Inc. (version 2.5, 02/04/01)
13
14!     Modifications:
15!     JJMorcrette 030224   rewritten / adapted to ECMWF F90 system
16!        M.Hamrud      01-Oct-2003 CY28 Cleaning
17!        D.Salmond  31-Oct-2007 Vector version in the style of RRTM from Meteo France & NEC
18
19!     Purpose:  For a given atmosphere, calculate the indices and
20!     fractions related to the pressure and temperature interpolations.
21
22USE PARKIND1 , ONLY : JPIM, JPRB
23USE YOMHOOK  , ONLY : LHOOK, DR_HOOK, JPHOOK
24USE YOESRTWN , ONLY : PREFLOG, TREF
25!!  USE YOESWN  , ONLY : NDBUG
26
27IMPLICIT NONE
28
29!-- Input arguments
30
31INTEGER(KIND=JPIM),INTENT(IN)    :: KIDIA, KFDIA
32INTEGER(KIND=JPIM),INTENT(IN)    :: KLEV
33REAL(KIND=JPRB)   ,INTENT(IN)    :: PAVEL(KIDIA:KFDIA,KLEV)
34REAL(KIND=JPRB)   ,INTENT(IN)    :: PTAVEL(KIDIA:KFDIA,KLEV)
35REAL(KIND=JPRB)   ,INTENT(IN)    :: PCOLDRY(KIDIA:KFDIA,KLEV)
36REAL(KIND=JPRB)   ,INTENT(IN)    :: PWKL(KIDIA:KFDIA,35,KLEV)
37INTEGER(KIND=JPIM),INTENT(OUT)   :: KLAYTROP(KIDIA:KFDIA)
38REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLCH4(KIDIA:KFDIA,KLEV)
39REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLCO2(KIDIA:KFDIA,KLEV)
40REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLH2O(KIDIA:KFDIA,KLEV)
41REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLMOL(KIDIA:KFDIA,KLEV)
42REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLO2(KIDIA:KFDIA,KLEV)
43REAL(KIND=JPRB)   ,INTENT(OUT)   :: PCOLO3(KIDIA:KFDIA,KLEV)
44REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFORFAC(KIDIA:KFDIA,KLEV)
45REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFORFRAC(KIDIA:KFDIA,KLEV)
46INTEGER(KIND=JPIM),INTENT(OUT)   :: KINDFOR(KIDIA:KFDIA,KLEV)
47REAL(KIND=JPRB)   ,INTENT(OUT)   :: PSELFFAC(KIDIA:KFDIA,KLEV)
48REAL(KIND=JPRB)   ,INTENT(OUT)   :: PSELFFRAC(KIDIA:KFDIA,KLEV)
49INTEGER(KIND=JPIM),INTENT(OUT)   :: KINDSELF(KIDIA:KFDIA,KLEV)
50REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFAC00(KIDIA:KFDIA,KLEV)
51REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFAC01(KIDIA:KFDIA,KLEV)
52REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFAC10(KIDIA:KFDIA,KLEV)
53REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFAC11(KIDIA:KFDIA,KLEV)
54INTEGER(KIND=JPIM),INTENT(OUT)   :: KJP(KIDIA:KFDIA,KLEV)
55INTEGER(KIND=JPIM),INTENT(OUT)   :: KJT(KIDIA:KFDIA,KLEV)
56INTEGER(KIND=JPIM),INTENT(OUT)   :: KJT1(KIDIA:KFDIA,KLEV)
57REAL(KIND=JPRB)   ,INTENT(IN)    :: PRMU0(KIDIA:KFDIA)
58!-- Output arguments
59
60!-- local integers
61
62INTEGER(KIND=JPIM) :: I_NLAYERS, JK, JL, JP1
63
64!-- local reals
65
66REAL(KIND=JPRB) :: Z_STPFAC, Z_PLOG
67REAL(KIND=JPRB) :: Z_FP, Z_FT, Z_FT1, Z_WATER, Z_SCALEFAC
68REAL(KIND=JPRB) :: Z_FACTOR, Z_CO2REG, Z_COMPFP
69!REAL(KIND=JPRB) :: Z_TBNDFRAC, Z_T0FRAC
70REAL(KIND=JPHOOK) :: ZHOOK_HANDLE
71
72
73IF (LHOOK) CALL DR_HOOK('SRTM_SETCOEF',0,ZHOOK_HANDLE)
74
75Z_STPFAC = 296._JPRB/1013._JPRB
76I_NLAYERS = KLEV
77
78DO JL = KIDIA, KFDIA
79  IF (PRMU0(JL) > 0.0_JPRB) THEN
80    KLAYTROP(JL)  = 0
81  ENDIF
82ENDDO
83
84DO JK = 1, I_NLAYERS
85  DO JL = KIDIA, KFDIA
86    IF (PRMU0(JL) > 0.0_JPRB) THEN
87      !        Find the two reference pressures on either side of the
88      !        layer pressure.  Store them in JP and JP1.  Store in FP the
89      !        fraction of the difference (in ln(pressure)) between these
90      !        two values that the layer pressure lies.
91
92      Z_PLOG = LOG(PAVEL(JL,JK))
93      KJP(JL,JK) = INT(36._JPRB - 5._JPRB*(Z_PLOG+0.04_JPRB))
94      IF (KJP(JL,JK) < 1) THEN
95        KJP(JL,JK) = 1
96      ELSEIF (KJP(JL,JK) > 58) THEN
97        KJP(JL,JK) = 58
98      ENDIF
99      JP1 = KJP(JL,JK) + 1
100      Z_FP = 5. * (PREFLOG(KJP(JL,JK)) - Z_PLOG)
101
102      !        Determine, for each reference pressure (JP and JP1), which
103      !        reference temperature (these are different for each 
104      !        reference pressure) is nearest the layer temperature but does
105      !        not exceed it.  Store these indices in JT and JT1, resp.
106      !        Store in FT (resp. FT1) the fraction of the way between JT
107      !        (JT1) and the next highest reference temperature that the
108      !        layer temperature falls.
109
110      KJT(JL,JK) = INT(3. + (PTAVEL(JL,JK)-TREF(KJP(JL,JK)))/15.)
111      IF (KJT(JL,JK) < 1) THEN
112        KJT(JL,JK) = 1
113      ELSEIF (KJT(JL,JK) > 4) THEN
114        KJT(JL,JK) = 4
115      ENDIF
116      Z_FT = ((PTAVEL(JL,JK)-TREF(KJP(JL,JK)))/15.) - REAL(KJT(JL,JK)-3)
117      KJT1(JL,JK) = INT(3. + (PTAVEL(JL,JK)-TREF(JP1))/15.)
118      IF (KJT1(JL,JK) < 1) THEN
119        KJT1(JL,JK) = 1
120      ELSEIF (KJT1(JL,JK) > 4) THEN
121        KJT1(JL,JK) = 4
122      ENDIF
123      Z_FT1 = ((PTAVEL(JL,JK)-TREF(JP1))/15.) - REAL(KJT1(JL,JK)-3)
124
125      Z_WATER = PWKL(JL,1,JK)/PCOLDRY(JL,JK)
126      Z_SCALEFAC = PAVEL(JL,JK) * Z_STPFAC / PTAVEL(JL,JK)
127
128      !        If the pressure is less than ~100mb, perform a different
129      !        set of species interpolations.
130
131      ! Olivier Marsden (15 June 2017)
132      !IF (Z_PLOG <= 4.56_JPRB) GO TO 5300
133      IF (KJP(JL,JK) >= 13) GO TO 5300
134     
135      KLAYTROP(JL) =  KLAYTROP(JL) + 1
136
137      !        Set up factors needed to separately include the water vapor
138      !        foreign-continuum in the calculation of absorption coefficient.
139
140      PFORFAC(JL,JK) = Z_SCALEFAC / (1.+Z_WATER)
141      Z_FACTOR = (332.0-PTAVEL(JL,JK))/36.0
142      KINDFOR(JL,JK) = MIN(2, MAX(1, INT(Z_FACTOR)))
143      PFORFRAC(JL,JK) = Z_FACTOR - REAL(KINDFOR(JL,JK))
144
145      !        Set up factors needed to separately include the water vapor
146      !        self-continuum in the calculation of absorption coefficient.
147
148      PSELFFAC(JL,JK) = Z_WATER * PFORFAC(JL,JK)
149      Z_FACTOR = (PTAVEL(JL,JK)-188.0)/7.2
150      KINDSELF(JL,JK) = MIN(9, MAX(1, INT(Z_FACTOR)-7))
151      PSELFFRAC(JL,JK) = Z_FACTOR - REAL(KINDSELF(JL,JK) + 7)
152
153      !        Calculate needed column amounts.
154
155      PCOLH2O(JL,JK) = 1.E-20 * PWKL(JL,1,JK)
156      PCOLCO2(JL,JK) = 1.E-20 * PWKL(JL,2,JK)
157      PCOLO3(JL,JK) = 1.E-20 * PWKL(JL,3,JK)
158      !         COLO3(LAY) = 0.
159      !         COLO3(LAY) = colo3(lay)/1.16
160      PCOLCH4(JL,JK) = 1.E-20 * PWKL(JL,6,JK)
161      PCOLO2(JL,JK) = 1.E-20 * PWKL(JL,7,JK)
162      PCOLMOL(JL,JK) = 1.E-20 * PCOLDRY(JL,JK) + PCOLH2O(JL,JK)
163      !         colco2(lay) = 0.
164      !         colo3(lay) = 0.
165      !         colch4(lay) = 0.
166      !         colo2(lay) = 0.
167      !         colmol(lay) = 0.
168      IF (PCOLCO2(JL,JK) == 0.) PCOLCO2(JL,JK) = 1.E-32 * PCOLDRY(JL,JK)
169      IF (PCOLCH4(JL,JK) == 0.) PCOLCH4(JL,JK) = 1.E-32 * PCOLDRY(JL,JK)
170      IF (PCOLO2(JL,JK) == 0.) PCOLO2(JL,JK) = 1.E-32 * PCOLDRY(JL,JK)
171      !        Using E = 1334.2 cm-1.
172      Z_CO2REG = 3.55E-24 * PCOLDRY(JL,JK)
173      GO TO 5400
174
175      !        Above LAYTROP.
1765300  CONTINUE
177
178      !        Set up factors needed to separately include the water vapor
179      !        foreign-continuum in the calculation of absorption coefficient.
180
181      PFORFAC(JL,JK) = Z_SCALEFAC / (1.+Z_WATER)
182      Z_FACTOR = (PTAVEL(JL,JK)-188.0)/36.0
183      KINDFOR(JL,JK) = 3
184      PFORFRAC(JL,JK) = Z_FACTOR - 1.0
185
186      !        Calculate needed column amounts.
187
188      PCOLH2O(JL,JK) = 1.E-20 * PWKL(JL,1,JK)
189      PCOLCO2(JL,JK) = 1.E-20 * PWKL(JL,2,JK)
190      PCOLO3(JL,JK)  = 1.E-20 * PWKL(JL,3,JK)
191      PCOLCH4(JL,JK) = 1.E-20 * PWKL(JL,6,JK)
192      PCOLO2(JL,JK)  = 1.E-20 * PWKL(JL,7,JK)
193      PCOLMOL(JL,JK) = 1.E-20 * PCOLDRY(JL,JK) + PCOLH2O(JL,JK)
194      IF (PCOLCO2(JL,JK) == 0.) PCOLCO2(JL,JK) = 1.E-32 * PCOLDRY(JL,JK)
195      IF (PCOLCH4(JL,JK) == 0.) PCOLCH4(JL,JK) = 1.E-32 * PCOLDRY(JL,JK)
196      IF (PCOLO2(JL,JK) == 0.) PCOLO2(JL,JK)  = 1.E-32 * PCOLDRY(JL,JK)
197      Z_CO2REG = 3.55E-24 * PCOLDRY(JL,JK)
198
199      PSELFFAC(JL,JK) =0.0_JPRB
200      PSELFFRAC(JL,JK)=0.0_JPRB
201      KINDSELF(JL,JK) = 0
202
2035400  CONTINUE
204
205      !        We have now isolated the layer ln pressure and temperature,
206      !        between two reference pressures and two reference temperatures
207      !        (for each reference pressure).  We multiply the pressure
208      !        fraction FP with the appropriate temperature fractions to get
209      !        the factors that will be needed for the interpolation that yields
210      !        the optical depths (performed in routines TAUGBn for band n).
211
212      Z_COMPFP = 1. - Z_FP
213      PFAC10(JL,JK) = Z_COMPFP * Z_FT
214      PFAC00(JL,JK) = Z_COMPFP * (1. - Z_FT)
215      PFAC11(JL,JK) = Z_FP * Z_FT1
216      PFAC01(JL,JK) = Z_FP * (1. - Z_FT1)
217
218    ENDIF
219  ENDDO
220ENDDO
221
222!-----------------------------------------------------------------------
223IF (LHOOK) CALL DR_HOOK('SRTM_SETCOEF',1,ZHOOK_HANDLE)
224
225END SUBROUTINE SRTM_SETCOEF
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