| 1 | MODULE watersat_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | |
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| 7 | SUBROUTINE watersat(naersize,t,p,qsat) |
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| 8 | |
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| 9 | IMPLICIT NONE |
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| 10 | |
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| 11 | c======================================================================= |
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| 12 | c |
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| 13 | c Water mass mixing ratio at saturation (kg/kg) for a given pressure (Pa) |
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| 14 | c and Temperature (K) array |
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| 15 | c |
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| 16 | c Move in module by Deborah BARDET 02/07/18 |
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| 17 | c======================================================================= |
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| 18 | |
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| 19 | c declarations: |
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| 20 | c ------------- |
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| 21 | c arguments: |
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| 22 | c ---------- |
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| 23 | |
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| 24 | c INPUT |
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| 25 | integer, intent(in) :: naersize |
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| 26 | real, intent(in) :: t(naersize) |
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| 27 | real, intent(in) :: p(naersize) |
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| 28 | c OUTPUT |
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| 29 | real, intent(out) :: qsat(naersize) |
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| 30 | |
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| 31 | c local: |
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| 32 | c ------ |
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| 33 | INTEGER i |
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| 34 | REAL,PARAMETER :: r2 = 611.14 |
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| 35 | REAL,PARAMETER :: r3 = 21.875 |
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| 36 | REAL,PARAMETER :: r4 = 7.66 |
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| 37 | REAL,PARAMETER :: To = 273.16 |
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| 38 | REAL es |
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| 39 | |
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| 40 | |
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| 41 | do i=1,naersize |
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| 42 | c pression de vapeur saturante : |
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| 43 | c es =r2*exp(r3*(t(i)-To)/(t(i)-r4)) |
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| 44 | c qsat(i)=es/p(i)*0.41 !rapport de melange |
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| 45 | es=2.07023-0.00320991*t(i)-2484.896/t(i)+3.56654*alog10(t(i)) |
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| 46 | es=10.**es |
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| 47 | qsat(i)=(es*100.)/p(i)*0.41 |
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| 48 | qsat(i) = max(qsat(i), 1.e-30) |
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| 49 | |
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| 50 | c qss = specific humidity |
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| 51 | c qss=622*10**(2.07023-0.0032991*Tsurf(ig)-2484.896/Tsurf(ig) |
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| 52 | c $ +3.56654*log10(Tsurf(ig))) |
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| 53 | |
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| 54 | enddo |
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| 55 | |
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| 56 | END SUBROUTINE watersat |
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| 57 | |
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| 58 | END MODULE watersat_mod |
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