trunk/dyn3d/tourpot.f

module tourpot_m

  IMPLICIT NONE

contains

  SUBROUTINE tourpot(vcov, ucov, massebxy, vorpot)

    ! From LMDZ4/libf/dyn3d/tourpot.F, version 1.1.1.1 2004/05/19 12:53:06

    ! Author: P. Le Van
    ! Objet : calcul du tourbillon potentiel

    USE dimens_m, ONLY: iim, jjm, llm
    USE comgeom, ONLY: fext_2d
    use filtreg_m, only: filtreg

    REAL, intent(in):: vcov(:, :, :) ! (iim + 1, jjm, llm)
    REAL, intent(in):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm)
    REAL, intent(in):: massebxy(:, :, :) ! (iim + 1, jjm, llm) mass of grid cell

    real, intent(out):: vorpot(:, :, :) ! (iim + 1, jjm, llm)
    ! = (Filtre(d(vcov)/dx - d(ucov)/dy) + fext) / massebxy

    ! Local:
    REAL rot(iim + 1, jjm, llm)
    ! relative vorticity multiplied by cell area, in m2 s-1

    INTEGER l, i, j

    !---------------------------------------------------------------

    ! Calcul du rotationnel du vent puis filtrage

    forall (i = 1: iim, j = 1: jjm) rot(i, j, :) &
         = vcov(i + 1, j, :) - vcov(i, j, :) + ucov(i, j + 1, :) - ucov(i, j, :)
    rot(iim + 1, :, :) = rot(1, :, :)

    CALL filtreg(rot, jjm, llm, 2, 1, .FALSE.)

    forall (l = 1: llm) vorpot(:iim, :, l) &
         = (rot(:iim, :, l) + fext_2d(:iim, :)) / massebxy(:iim, :, l)
    vorpot(iim + 1, :, :)= vorpot(1, :, :)

  END SUBROUTINE tourpot

end module tourpot_m
1	module tourpot_m
2
3	IMPLICIT NONE
4
5	contains
6
7	SUBROUTINE tourpot(vcov, ucov, massebxy, vorpot)
8
9	! From LMDZ4/libf/dyn3d/tourpot.F, version 1.1.1.1 2004/05/19 12:53:06
10
11	! Author: P. Le Van
12	! Objet : calcul du tourbillon potentiel
13
14	USE dimens_m, ONLY: iim, jjm, llm
15	USE comgeom, ONLY: fext_2d
16	use filtreg_m, only: filtreg
17
18	REAL, intent(in):: vcov(:, :, :) ! (iim + 1, jjm, llm)
19	REAL, intent(in):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm)
20	REAL, intent(in):: massebxy(:, :, :) ! (iim + 1, jjm, llm) mass of grid cell
21
22	real, intent(out):: vorpot(:, :, :) ! (iim + 1, jjm, llm)
23	! = (Filtre(d(vcov)/dx - d(ucov)/dy) + fext) / massebxy
24
25	! Local:
26	REAL rot(iim + 1, jjm, llm)
27	! relative vorticity multiplied by cell area, in m2 s-1
28
29	INTEGER l, i, j
30
31	!---------------------------------------------------------------
32
33	! Calcul du rotationnel du vent puis filtrage
34
35	forall (i = 1: iim, j = 1: jjm) rot(i, j, :) &
36	= vcov(i + 1, j, :) - vcov(i, j, :) + ucov(i, j + 1, :) - ucov(i, j, :)
37	rot(iim + 1, :, :) = rot(1, :, :)
38
39	CALL filtreg(rot, jjm, llm, 2, 1, .FALSE.)
40
41	forall (l = 1: llm) vorpot(:iim, :, l) &
42	= (rot(:iim, :, l) + fext_2d(:iim, :)) / massebxy(:iim, :, l)
43	vorpot(iim + 1, :, :)= vorpot(1, :, :)
44
45	END SUBROUTINE tourpot
46
47	end module tourpot_m