/[lmdze]/trunk/phylmd/FCTTRE.f
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trunk/libf/phylmd/FCTTRE.f90 revision 3 by guez, Wed Feb 27 13:16:39 2008 UTC trunk/Sources/phylmd/FCTTRE.f revision 207 by guez, Thu Sep 1 10:30:53 2016 UTC
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1  module FCTTRE  module FCTTRE
2    
3    ! From phylmd/FCTTRE.inc,v 1.2 2004/06/22 11:45:32    ! From phylmd/FCTTRE.inc, version 1.2, 2004/06/22 11:45:32
4    
5    !      This COMDECK includes the Thermodynamical functions for the cy39    ! This module includes the thermodynamical functions for the cycle
6    !       ECMWF Physics package.    ! 39 ECMWF physics package. Consistent with "SUPHEC_M" basic
7    !       Consistent with YOMCST Basic physics constants, assuming the    ! physical constants, assuming the partial pressure of water vapour
8    !       partial pressure of water vapour is given by a first order    ! is given by a first order Taylor expansion of "Qs(T)" with respect
9    !       Taylor expansion of Qs(T) w.r.t. to Temperature, using constants    ! to temperature, using constants in "yoethf_m".
   !       in YOETHF  
10    
11    implicit none    ! Probably from Buck, 1981, Journal of Applied Meteorology, volume
12      ! 20, number 12, page 1527.
13    
14    LOGICAL, PARAMETER:: thermcep=.TRUE.    implicit none
15    
16  contains  contains
17    
18    REAL function FOEEW ( PTARG,PDELARG )    elemental REAL function FOEEW(T, ICE)
19    
20      use yoethf, only: R3LES, R3IES, R4LES, R4IES      use yoethf_m, only: R3LES, R3IES, R4LES, R4IES
21      use YOMCST, only: rtt      use SUPHEC_M, only: rtt
22    
23      REAL, intent(in):: PTARG, PDELARG      REAL, intent(in):: T
24        logical, intent(in):: ICE ! else liquid
25    
26      !-----------------------      !-----------------------
27    
28      FOEEW = EXP ((R3LES*(1.-PDELARG)+R3IES*PDELARG) * (PTARG-RTT) &      FOEEW = exp(merge(R3IES / (T - R4IES), R3lES / (T - R4lES), ice) &
29           / (PTARG-(R4LES*(1.-PDELARG)+R4IES*PDELARG)) )           * (T - RTT))
30    
31    end function FOEEW    end function FOEEW
32    
33    !******************************************    !******************************************
34    
35    REAL function FOEDE(PTARG,PDELARG,P5ARG,PQSARG,PCOARG)    REAL function FOEDE(T, ICE, P5ARG, QS, PCOARG)
36    
37      use yoethf, only: R4LES, R4IES      use yoethf_m, only: R4LES, R4IES
38    
39      REAL, intent(in):: PTARG, PDELARG      REAL, intent(in):: T
40      real, intent(in):: P5ARG, PQSARG, PCOARG      logical, intent(in):: ICE ! else liquid
41        real, intent(in):: P5ARG, QS, PCOARG
42    
43      !-----------------------      !-----------------------
44    
45      FOEDE = PQSARG*PCOARG*P5ARG / (PTARG-(R4LES*(1.-PDELARG)+R4IES*PDELARG))**2      FOEDE = QS * PCOARG * P5ARG / (T - merge(R4IES, R4lES, ice))**2
46    
47    end function FOEDE    end function FOEDE
48    
49    !******************************************    !******************************************
50    
51    REAL function qsats(ptarg)    elemental REAL function qsats(t)
52    
53      REAL, intent(in):: PTARG      REAL, intent(in):: T
54    
55      !-----------------------      !-----------------------
56    
57      qsats = 100.0 * 0.622 * 10.0 &      qsats = 100. * 0.622 &
58           ** (2.07023 - 0.00320991 * ptarg &           * 10.**(2.07023 - 0.00320991 * t - 2484.896 / t + 3.56654 * LOG10(t))
          - 2484.896 / ptarg + 3.56654 * LOG10(ptarg))  
59    
60    end function qsats    end function qsats
61    
62    !******************************************    !******************************************
63    
64    REAL function qsatl(ptarg)    elemental REAL function qsatl(t)
65    
66      REAL, intent(in):: PTARG      REAL, intent(in):: T
67    
68      !-----------------------      !-----------------------
69    
70      qsatl = 100.0 * 0.622 * 10.0 &      qsatl = 100. * 0.622 * 10.**(23.8319 - 2948.964 / t &
71           ** (23.8319 - 2948.964 / ptarg &           - 5.028 * LOG10(t) - 29810.16 * EXP(- 0.0699382 * t) &
72           - 5.028 * LOG10(ptarg) &           + 25.21935 * EXP(- 2999.924 / t))
          - 29810.16 * EXP( - 0.0699382 * ptarg) &  
          + 25.21935 * EXP( - 2999.924 / ptarg))  
73    
74    end function qsatl    end function qsatl
75    
76    !******************************************    !******************************************
77    
78    REAL function dqsats(ptarg,pqsarg)    REAL function dqsats(t, qs)
79    
80      use YOMCST, only: RLVTT, rcpd      use SUPHEC_M, only: RLVTT, rcpd
81    
82      REAL, intent(in):: PTARG, pqsarg      REAL, intent(in):: T, qs
83    
84      !-----------------------      !-----------------------
85    
86      dqsats = RLVTT/RCPD*pqsarg * (3.56654/ptarg &      dqsats = RLVTT / RCPD * qs * (3.56654/t &
87           +2484.896*LOG(10.)/ptarg**2 &           +2484.896*LOG(10.)/t**2 - 0.00320991*LOG(10.))
          -0.00320991*LOG(10.))  
88    
89    end function dqsats    end function dqsats
90    
91    !******************************************    !******************************************
92    
93    REAL function dqsatl(ptarg,pqsarg)    REAL function dqsatl(t, qs)
94    
95      use YOMCST, only: RLVTT, rcpd      use SUPHEC_M, only: RLVTT, rcpd
96    
97      REAL, intent(in):: PTARG, pqsarg      REAL, intent(in):: T, qs
98    
99      !-----------------------      !-----------------------
100    
101      dqsatl = RLVTT/RCPD*pqsarg*LOG(10.)* &      dqsatl = RLVTT / RCPD * qs * LOG(10.) * (2948.964 / t**2 - 5.028 &
102           (2948.964/ptarg**2-5.028/LOG(10.)/ptarg &           / LOG(10.) / t + 25.21935 * 2999.924 / t**2 * EXP(- 2999.924 / t) &
103           +25.21935*2999.924/ptarg**2*EXP(-2999.924/ptarg) &           + 29810.16 * 0.0699382 * EXP(- 0.0699382 * t))
          +29810.16*0.0699382*EXP(-0.0699382*ptarg))  
104    
105    end function dqsatl    end function dqsatl
106    
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