Last change
on this file since 17 was
17,
checked in by ymipsl, 12 years ago
|
Merge advection scheme from sarvesh in standard version
YM
|
File size:
1.4 KB
|
Rev | Line | |
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[17] | 1 | MODULE disvert_ncar_mod |
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| 2 | USE prec |
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| 3 | |
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| 4 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: ap(:) |
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| 5 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: bp(:) |
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| 6 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: presnivs(:) |
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| 7 | |
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| 8 | CONTAINS |
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| 9 | !========================================================================= |
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| 10 | |
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| 11 | SUBROUTINE init_disvert |
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| 12 | USE grid_param |
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| 13 | USE ioipsl |
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| 14 | IMPLICIT NONE |
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| 15 | |
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| 16 | ALLOCATE(ap(llm+1)) |
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| 17 | ALLOCATE(bp(llm+1)) |
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| 18 | ALLOCATE(presnivs(llm)) |
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| 19 | |
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| 20 | CALL disvert(ap,bp,presnivs) |
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| 21 | |
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| 22 | END SUBROUTINE init_disvert |
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| 23 | |
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| 24 | |
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| 25 | SUBROUTINE disvert(ap,bp,presnivs) |
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| 26 | USE earth_const |
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| 27 | USE math_const |
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| 28 | USE grid_param |
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| 29 | IMPLICIT NONE |
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| 30 | REAL(rstd),INTENT(OUT) :: ap(:) |
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| 31 | REAL(rstd),INTENT(OUT) :: bp(:) |
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| 32 | REAL(rstd),INTENT(OUT) :: presnivs(:) |
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| 33 | |
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| 34 | REAL(rstd) :: sig(llm+1) |
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| 35 | REAL(rstd) :: sigtop |
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| 36 | REAL(rstd),PARAMETER:: p0=100000.0 |
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| 37 | INTEGER :: l,cindx |
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| 38 | REAL(rstd) :: hdz, ehdz |
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| 39 | |
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| 40 | |
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| 41 | hdz = 400.*g/(300.*287.) |
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| 42 | ehdz = exp(-hdz) |
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| 43 | |
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| 44 | do l = 1,llm+1 |
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| 45 | sig(l) = ehdz**(l-1) |
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| 46 | end do |
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| 47 | |
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| 48 | sigtop = sig(llm+1) |
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| 49 | cindx = 1 |
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| 50 | |
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| 51 | bp(llm+1) = 0. |
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| 52 | DO l = 1, llm |
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| 53 | bp(l) = (sig(l) - sigtop)/(1 - sigtop) |
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| 54 | bp(l) = bp(l)**cindx |
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| 55 | ap(l) = p0 * ( sig(l) - bp(l) ) |
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| 56 | ENDDO |
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| 57 | bp(1)=1. |
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| 58 | ap(1)=0. |
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| 59 | ap(llm+1) = p0 * ( sig(llm+1) - bp(llm+1) ) |
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| 60 | |
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| 61 | DO l = 1, llm |
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| 62 | presnivs(l) = 0.5 *( ap(l)+bp(l)*p0 + ap(l+1)+bp(l+1)*p0 ) |
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| 63 | ENDDO |
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| 64 | |
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| 65 | END SUBROUTINE disvert |
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| 66 | |
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| 67 | END MODULE disvert_ncar_mod |
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