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SUBROUTINE METHOX(KIDIA, KFDIA, KLON, KLEV,PQ, PTENQ, PAP ) |
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!**** *METHOX* - Calculate humidity tendencies from methane |
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! oxidation and photolysis |
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!** INTERFACE. |
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! ---------- |
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! CALL *METHOX* FROM *CALLPAR* |
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! ------ ------- |
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! EXPLICIT ARGUMENTS : |
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! -------------------- |
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! PARAMETER DESCRIPTION UNITS |
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! --------- ----------- ----- |
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! INPUT PARAMETERS (INTEGER): |
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! *KIDIA* START POINT |
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! *KFDIA* END POINT |
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! *KLON* NUMBER OF GRID POINTS PER PACKET |
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! *KLEV* NUMBER OF LEVELS |
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! INPUT PARAMETERS (REAL): |
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! *PAP* PRESSURE PA |
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! *PQ* SPECIFIC HUMIDITY KG/KG |
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! UPDATED PARAMETERS (REAL): |
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! *PTENQ* TENDENCY OF SPECIFIC HUMIDITY KG/(KG*S) |
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! NONE |
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! IMPLICIT ARGUMENTS : |
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! -------------------- |
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! MODULE YOEMETH |
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! MODULE YOMCST |
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! METHOD. |
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! ------- |
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! SEE RD-MEMO R60.1/AJS/31 |
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! EXTERNALS. |
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! ---------- |
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! NONE |
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! REFERENCE. |
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! ---------- |
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! SEE RD-MEMO R60.1/AJS/31 |
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! AUTHOR. |
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! ------- |
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! C.JAKOB *ECMWF* |
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! MODIFICATIONS. |
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! -------------- |
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! ORIGINAL : 98-04-07 |
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! M.Hamrud 01-Oct-2003 CY28 Cleaning |
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! D. Cugnet 24-Feb-2012 Adapted for LMDZ |
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! ------------------------------------------------------------------ |
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USE YOEMETH , ONLY : RALPHA1 ,RALPHA2 ,RQLIM ,& |
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& RPBOTOX, RPBOTPH ,RPTOPOX ,RPTOPPH ,& |
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& RALPHA3, RLOGPPH |
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IMPLICIT NONE |
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! |
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! $Header$ |
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! |
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! ATTENTION!!!!: ce fichier include est compatible format fixe/format libre |
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! veillez � n'utiliser que des ! pour les commentaires |
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! et � bien positionner les & des lignes de continuation |
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! (les placer en colonne 6 et en colonne 73) |
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! |
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! |
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! A1.0 Fundamental constants |
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REAL RPI,RCLUM,RHPLA,RKBOL,RNAVO |
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! A1.1 Astronomical constants |
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REAL RDAY,REA,REPSM,RSIYEA,RSIDAY,ROMEGA |
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! A1.1.bis Constantes concernant l'orbite de la Terre: |
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REAL R_ecc, R_peri, R_incl |
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! A1.2 Geoide |
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REAL RA,RG,R1SA |
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! A1.3 Radiation |
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! REAL RSIGMA,RI0 |
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REAL RSIGMA |
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! A1.4 Thermodynamic gas phase |
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REAL RMO3,RMCO2,RMC,RMCH4,RMN2O,RMCFC11,RMCFC12 |
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REAL R,RMD,RMV,RD,RV,RCPD,RCPV,RCVD,RCVV |
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REAL RKAPPA,RETV, eps_w |
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! A1.5,6 Thermodynamic liquid,solid phases |
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REAL RCW,RCS |
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! A1.7 Thermodynamic transition of phase |
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REAL RLVTT,RLSTT,RLMLT,RTT,RATM |
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! A1.8 Curve of saturation |
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REAL RESTT,RALPW,RBETW,RGAMW,RALPS,RBETS,RGAMS |
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REAL RALPD,RBETD,RGAMD |
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! |
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COMMON/YOMCST/RPI ,RCLUM ,RHPLA ,RKBOL ,RNAVO & |
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& ,RDAY ,REA ,REPSM ,RSIYEA,RSIDAY,ROMEGA & |
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& ,R_ecc, R_peri, R_incl & |
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& ,RA ,RG ,R1SA & |
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& ,RSIGMA & |
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& ,R ,RMD ,RMV ,RD ,RV ,RCPD & |
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& ,RMO3 ,RMCO2 ,RMC ,RMCH4 ,RMN2O ,RMCFC11 ,RMCFC12 & |
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& ,RCPV ,RCVD ,RCVV ,RKAPPA,RETV, eps_w & |
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& ,RCW ,RCS & |
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& ,RLVTT ,RLSTT ,RLMLT ,RTT ,RATM & |
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& ,RESTT ,RALPW ,RBETW ,RGAMW ,RALPS ,RBETS ,RGAMS & |
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& ,RALPD ,RBETD ,RGAMD |
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! ------------------------------------------------------------------ |
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!$OMP THREADPRIVATE(/YOMCST/) |
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INTEGER,INTENT(IN) :: KLON |
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INTEGER,INTENT(IN) :: KLEV |
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INTEGER,INTENT(IN) :: KIDIA |
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INTEGER,INTENT(IN) :: KFDIA |
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REAL ,INTENT(IN) :: PQ(KLON,KLEV) |
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REAL ,INTENT(INOUT) :: PTENQ(KLON,KLEV) |
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REAL ,INTENT(IN) :: PAP(KLON,KLEV) |
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LOGICAL :: LLOXID, LLPHOTO |
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INTEGER :: JK, JL |
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REAL :: ZARG, ZPRATIO, ZTAU1, ZTAU2, ZTDAYS |
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DO JK=1,KLEV |
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DO JL=KIDIA,KFDIA |
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LLOXID=PAP(JL,JK) < RPBOTOX.AND.PQ(JL,JK) < RQLIM |
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LLPHOTO=PAP(JL,JK) < RPBOTPH |
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! METHANE OXIDATION |
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IF(LLOXID) THEN |
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IF(PAP(JL,JK) <= RPTOPOX) THEN |
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ZTDAYS=100. |
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ELSE |
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ZPRATIO=(LOG(PAP(JL,JK)/RPTOPOX))**4./LOG(RPBOTOX/PAP(JL,JK)) |
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ZTDAYS=100.*(1+RALPHA1*ZPRATIO) |
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ENDIF |
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ZTAU1=86400.*ZTDAYS |
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PTENQ(JL,JK)=PTENQ(JL,JK)+(RQLIM-PQ(JL,JK))/ZTAU1 |
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ENDIF |
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! PHOTOLYSIS |
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IF(LLPHOTO) THEN |
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IF(PAP(JL,JK) <= RPTOPPH) THEN |
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ZTDAYS=3. |
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ELSE |
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ZARG=RALPHA2-RALPHA3*(1+COS((RPI*LOG(PAP(JL,JK)/RPBOTPH))/RLOGPPH)) |
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ZTDAYS=1.0/(EXP(ZARG)-0.01) |
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ENDIF |
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ZTAU2=86400.*ZTDAYS |
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PTENQ(JL,JK)=PTENQ(JL,JK)-PQ(JL,JK)/ZTAU2 |
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ENDIF |
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ENDDO |
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ENDDO |
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END SUBROUTINE METHOX |
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