[2136] | 1 | SUBROUTINE METHOX(KIDIA, KFDIA, KLON, KLEV,PQ, PTENQ, PAP ) |
---|
| 2 | |
---|
| 3 | !**** *METHOX* - Calculate humidity tendencies from methane |
---|
| 4 | ! oxidation and photolysis |
---|
| 5 | |
---|
| 6 | !** INTERFACE. |
---|
| 7 | ! ---------- |
---|
| 8 | ! CALL *METHOX* FROM *CALLPAR* |
---|
| 9 | ! ------ ------- |
---|
| 10 | |
---|
| 11 | ! EXPLICIT ARGUMENTS : |
---|
| 12 | ! -------------------- |
---|
| 13 | ! PARAMETER DESCRIPTION UNITS |
---|
| 14 | ! --------- ----------- ----- |
---|
| 15 | ! INPUT PARAMETERS (INTEGER): |
---|
| 16 | |
---|
| 17 | ! *KIDIA* START POINT |
---|
| 18 | ! *KFDIA* END POINT |
---|
| 19 | ! *KLON* NUMBER OF GRID POINTS PER PACKET |
---|
| 20 | ! *KLEV* NUMBER OF LEVELS |
---|
| 21 | |
---|
| 22 | ! INPUT PARAMETERS (REAL): |
---|
| 23 | |
---|
| 24 | ! *PAP* PRESSURE PA |
---|
| 25 | ! *PQ* SPECIFIC HUMIDITY KG/KG |
---|
| 26 | |
---|
| 27 | ! UPDATED PARAMETERS (REAL): |
---|
| 28 | |
---|
| 29 | ! *PTENQ* TENDENCY OF SPECIFIC HUMIDITY KG/(KG*S) |
---|
| 30 | |
---|
| 31 | ! NONE |
---|
| 32 | |
---|
| 33 | ! IMPLICIT ARGUMENTS : |
---|
| 34 | ! -------------------- |
---|
| 35 | ! MODULE YOEMETH |
---|
| 36 | ! MODULE YOMCST |
---|
| 37 | |
---|
| 38 | ! METHOD. |
---|
| 39 | ! ------- |
---|
| 40 | ! SEE RD-MEMO R60.1/AJS/31 |
---|
| 41 | |
---|
| 42 | ! EXTERNALS. |
---|
| 43 | ! ---------- |
---|
| 44 | ! NONE |
---|
| 45 | |
---|
| 46 | ! REFERENCE. |
---|
| 47 | ! ---------- |
---|
| 48 | ! SEE RD-MEMO R60.1/AJS/31 |
---|
| 49 | |
---|
| 50 | ! AUTHOR. |
---|
| 51 | ! ------- |
---|
| 52 | ! C.JAKOB *ECMWF* |
---|
| 53 | |
---|
| 54 | ! MODIFICATIONS. |
---|
| 55 | ! -------------- |
---|
| 56 | ! ORIGINAL : 98-04-07 |
---|
| 57 | ! M.Hamrud 01-Oct-2003 CY28 Cleaning |
---|
| 58 | ! D. Cugnet 24-Feb-2012 Adapted for LMDZ |
---|
| 59 | ! ------------------------------------------------------------------ |
---|
| 60 | |
---|
| 61 | USE YOEMETH , ONLY : RALPHA1 ,RALPHA2 ,RQLIM ,& |
---|
| 62 | & RPBOTOX, RPBOTPH ,RPTOPOX ,RPTOPPH ,& |
---|
| 63 | & RALPHA3, RLOGPPH |
---|
| 64 | |
---|
| 65 | IMPLICIT NONE |
---|
| 66 | |
---|
[4593] | 67 | INCLUDE "YOMCST.h" |
---|
[2136] | 68 | |
---|
| 69 | INTEGER,INTENT(IN) :: KLON |
---|
| 70 | INTEGER,INTENT(IN) :: KLEV |
---|
| 71 | INTEGER,INTENT(IN) :: KIDIA |
---|
| 72 | INTEGER,INTENT(IN) :: KFDIA |
---|
| 73 | REAL ,INTENT(IN) :: PQ(KLON,KLEV) |
---|
| 74 | REAL ,INTENT(INOUT) :: PTENQ(KLON,KLEV) |
---|
| 75 | REAL ,INTENT(IN) :: PAP(KLON,KLEV) |
---|
| 76 | LOGICAL :: LLOXID, LLPHOTO |
---|
| 77 | |
---|
| 78 | INTEGER :: JK, JL |
---|
| 79 | |
---|
| 80 | REAL :: ZARG, ZPRATIO, ZTAU1, ZTAU2, ZTDAYS |
---|
| 81 | |
---|
| 82 | DO JK=1,KLEV |
---|
| 83 | DO JL=KIDIA,KFDIA |
---|
| 84 | |
---|
| 85 | LLOXID=PAP(JL,JK) < RPBOTOX.AND.PQ(JL,JK) < RQLIM |
---|
| 86 | LLPHOTO=PAP(JL,JK) < RPBOTPH |
---|
| 87 | |
---|
| 88 | ! METHANE OXIDATION |
---|
| 89 | |
---|
| 90 | IF(LLOXID) THEN |
---|
| 91 | IF(PAP(JL,JK) <= RPTOPOX) THEN |
---|
| 92 | ZTDAYS=100. |
---|
| 93 | ELSE |
---|
| 94 | ZPRATIO=(LOG(PAP(JL,JK)/RPTOPOX))**4./LOG(RPBOTOX/PAP(JL,JK)) |
---|
| 95 | ZTDAYS=100.*(1+RALPHA1*ZPRATIO) |
---|
| 96 | ENDIF |
---|
| 97 | ZTAU1=86400.*ZTDAYS |
---|
| 98 | PTENQ(JL,JK)=PTENQ(JL,JK)+(RQLIM-PQ(JL,JK))/ZTAU1 |
---|
| 99 | ENDIF |
---|
| 100 | |
---|
| 101 | ! PHOTOLYSIS |
---|
| 102 | |
---|
| 103 | IF(LLPHOTO) THEN |
---|
| 104 | IF(PAP(JL,JK) <= RPTOPPH) THEN |
---|
| 105 | ZTDAYS=3. |
---|
| 106 | ELSE |
---|
| 107 | ZARG=RALPHA2-RALPHA3*(1+COS((RPI*LOG(PAP(JL,JK)/RPBOTPH))/RLOGPPH)) |
---|
| 108 | ZTDAYS=1.0/(EXP(ZARG)-0.01) |
---|
| 109 | ENDIF |
---|
| 110 | ZTAU2=86400.*ZTDAYS |
---|
| 111 | PTENQ(JL,JK)=PTENQ(JL,JK)-PQ(JL,JK)/ZTAU2 |
---|
| 112 | ENDIF |
---|
| 113 | ENDDO |
---|
| 114 | ENDDO |
---|
| 115 | |
---|
| 116 | END SUBROUTINE METHOX |
---|
| 117 | |
---|
| 118 | |
---|