| 1 | C ------------------------------------------------------------------ |
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| 2 | C This COMDECK includes the Thermodynamical functions for the cy39 |
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| 3 | C ECMWF Physics package. |
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| 4 | C Consistent with YOMCST Basic physics constants, assuming the |
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| 5 | C partial pressure of water vapour is given by a first order |
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| 6 | C Taylor expansion of Qs(T) w.r.t. to Temperature, using constants |
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| 7 | C in YOETHF |
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| 8 | C ------------------------------------------------------------------ |
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| 9 | REAL PTARG, PDELARG, P5ARG, PQSARG, PCOARG |
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| 10 | REAL FOEEW, FOEDE, qsats, qsatl, dqsats, dqsatl |
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| 11 | LOGICAL thermcep |
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| 12 | PARAMETER (thermcep=.TRUE.) |
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| 13 | C |
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| 14 | FOEEW ( PTARG,PDELARG ) = EXP ( |
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| 15 | S (R3LES*(1.-PDELARG)+R3IES*PDELARG) * (PTARG-RTT) |
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| 16 | S / (PTARG-(R4LES*(1.-PDELARG)+R4IES*PDELARG)) ) |
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| 17 | C |
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| 18 | FOEDE ( PTARG,PDELARG,P5ARG,PQSARG,PCOARG ) = PQSARG*PCOARG*P5ARG |
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| 19 | S / (PTARG-(R4LES*(1.-PDELARG)+R4IES*PDELARG))**2 |
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| 20 | c |
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| 21 | qsats(ptarg) = 100.0 * 0.622 * 10.0 |
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| 22 | . ** (2.07023 - 0.00320991 * ptarg |
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| 23 | . - 2484.896 / ptarg + 3.56654 * LOG10(ptarg)) |
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| 24 | qsatl(ptarg) = 100.0 * 0.622 * 10.0 |
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| 25 | . ** (23.8319 - 2948.964 / ptarg |
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| 26 | . - 5.028 * LOG10(ptarg) |
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| 27 | . - 29810.16 * EXP( - 0.0699382 * ptarg) |
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| 28 | . + 25.21935 * EXP( - 2999.924 / ptarg)) |
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| 29 | c |
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| 30 | dqsats(ptarg,pqsarg) = RLVTT/RCPD*pqsarg * (3.56654/ptarg |
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| 31 | . +2484.896*LOG(10.)/ptarg**2 |
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| 32 | . -0.00320991*LOG(10.)) |
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| 33 | dqsatl(ptarg,pqsarg) = RLVTT/RCPD*pqsarg*LOG(10.)* |
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| 34 | . (2948.964/ptarg**2-5.028/LOG(10.)/ptarg |
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| 35 | . +25.21935*2999.924/ptarg**2*EXP(-2999.924/ptarg) |
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| 36 | . +29810.16*0.0699382*EXP(-0.0699382*ptarg)) |
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