| 1 | SUBROUTINE alpale_wk ( dtime, cell_area, zoccur, sigmaw, wdens, fip , & |
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| 2 | fip_cond) |
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| 3 | |
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| 4 | ! ************************************************************** |
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| 5 | ! * |
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| 6 | ! ALPALE_WK * |
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| 7 | ! * |
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| 8 | ! * |
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| 9 | ! written by : Jean-Yves Grandpeix, 07/08/2017 * |
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| 10 | ! modified by : * |
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| 11 | ! ************************************************************** |
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| 12 | |
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| 13 | USE dimphy, ONLY: klon |
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| 14 | USE ioipsl_getin_p_mod, ONLY : getin_p |
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| 15 | USE print_control_mod, ONLY: mydebug=>debug , lunout, prt_level |
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| 16 | ! |
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| 17 | IMPLICIT NONE |
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| 18 | |
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| 19 | !================================================================ |
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| 20 | ! Auteur(s) : Jean-Yves Grandpeix, 07/08/2017 |
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| 21 | ! Objet : Contribution of the wake scheme to Ale and Alp |
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| 22 | !================================================================ |
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| 23 | |
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| 24 | ! Input arguments |
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| 25 | !---------------- |
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| 26 | REAL, INTENT(IN) :: dtime |
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| 27 | REAL, DIMENSION(klon), INTENT(IN) :: cell_area |
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| 28 | INTEGER, DIMENSION(klon), INTENT (IN) :: zoccur |
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| 29 | REAL, DIMENSION(klon), INTENT(IN) :: sigmaw |
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| 30 | REAL, DIMENSION(klon), INTENT(IN) :: wdens |
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| 31 | REAL, DIMENSION(klon), INTENT(IN) :: fip |
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| 32 | ! Output arguments |
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| 33 | !----------------- |
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| 34 | REAL, DIMENSION(klon), INTENT(OUT) :: fip_cond |
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| 35 | |
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| 36 | |
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| 37 | ! Local variables |
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| 38 | !---------------- |
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| 39 | INTEGER :: i |
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| 40 | LOGICAL, SAVE :: first = .TRUE. |
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| 41 | !$OMP THREADPRIVATE(first) |
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| 42 | REAL, ALLOCATABLE, SAVE, DIMENSION(:) :: cellrad |
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| 43 | !$OMP THREADPRIVATE(cellrad) |
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| 44 | REAL, DIMENSION(klon) :: wkrad |
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| 45 | REAL, DIMENSION(klon) :: proba_gf |
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| 46 | |
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| 47 | INCLUDE "YOMCST.h" ! rpi |
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| 48 | |
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| 49 | IF (first) THEN |
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| 50 | ALLOCATE (cellrad(klon)) |
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| 51 | ! Compute pseudo grid-cell radius cellrad, such that pi*cellrad^2=cell_area |
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| 52 | print *,'alpale_wk: cell_area(1) ',cell_area(1) |
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| 53 | cellrad(:)=sqrt(cell_area(:)/rpi) |
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| 54 | first = .FALSE. |
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| 55 | ENDIF |
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| 56 | |
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| 57 | ! Compute wake radius |
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| 58 | !! print *,'alpale_wk: sigmaw(1), wdens(1) ', sigmaw(1), wdens(1) |
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| 59 | DO i = 1,klon |
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| 60 | IF (zoccur(i) .GE. 1) THEN |
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| 61 | wkrad(i) = sqrt(sigmaw(i)/(rpi*wdens(i))) |
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| 62 | ELSE |
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| 63 | wkrad(i) = 0. |
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| 64 | ENDIF ! (zoccur(i) .GE. 1) |
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| 65 | ENDDO |
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| 66 | |
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| 67 | ! Compute probability that the grid-cell is intersected by a gust front |
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| 68 | !! print *,'alpale_wk: wkrad(1), cellrad(1) ', wkrad(1), cellrad(1) |
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| 69 | proba_gf(:) = exp(-wdens(:)*rpi*max(wkrad(:)-cellrad(:),0.)**2) - & |
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| 70 | exp(-wdens(:)*rpi*(wkrad(:)+cellrad(:))**2) |
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| 71 | ! |
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| 72 | proba_gf(:) = max(proba_gf(:),1.e-3) |
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| 73 | ! Compute Fip conditionned on the presence of some gust front within the |
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| 74 | ! grid-cell |
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| 75 | !! print *,'alpale_wk: proba_gf(1), fip(1), ', proba_gf(1), fip(1) |
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| 76 | fip_cond(:) = fip(:)/proba_gf(:) |
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| 77 | !! print *,'alpale_wk: fip_cond(1) ', fip_cond(1) |
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| 78 | |
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| 79 | RETURN |
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| 80 | END SUBROUTINE alpale_wk |
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| 81 | |
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