| 1 | ! $Header: /home/cvsroot/LMDZ4/libf/phylmd/geo2atm.F90,v 1.1 2008-12-05 17:56:40 lsce Exp $ |
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| 2 | |
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| 3 | SUBROUTINE geo2atm(im, jm, px, py, pz, plon, plat, pu, pv, pr) |
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| 4 | USE dimphy |
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| 5 | USE lmdz_phys_para |
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| 6 | USE lmdz_grid_phy, ONLY: grid_type, unstructured, regular_lonlat |
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| 7 | USE lmdz_abort_physic, ONLY: abort_physic |
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| 8 | USE lmdz_yomcst |
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| 9 | |
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| 10 | IMPLICIT NONE |
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| 11 | CHARACTER (len = 6) :: clmodnam |
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| 12 | CHARACTER (len = 20) :: modname = 'geo2atm' |
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| 13 | CHARACTER (len = 80) :: abort_message |
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| 14 | |
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| 15 | ! Change wind coordinates from cartesian geocentric to local spherical |
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| 16 | ! NB! Fonctionne probablement uniquement en MPI seul (sans OpenMP) |
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| 17 | |
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| 18 | ! Geocentric : |
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| 19 | ! axe x is eastward : crosses (0N,90E) point. |
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| 20 | ! axe y crosses (0N,180E) point. |
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| 21 | ! axe z is 'up' : crosses north pole. |
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| 22 | |
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| 23 | ! NB! Aux poles, fonctionne probablement uniquement en MPI seul (sans OpenMP) |
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| 24 | |
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| 25 | INTEGER, INTENT (IN) :: im, jm |
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| 26 | REAL, DIMENSION (im, jm), INTENT(IN) :: px, py, pz |
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| 27 | REAL, DIMENSION (im, jm), INTENT(IN) :: plon, plat |
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| 28 | REAL, DIMENSION (im, jm), INTENT(OUT) :: pu, pv, pr |
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| 29 | |
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| 30 | REAL :: rad, reps |
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| 31 | |
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| 32 | rad = rpi / 180.0E0 |
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| 33 | reps = 1.0e-5 |
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| 34 | |
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| 35 | pu(:, :) = & |
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| 36 | - px(:, :) * SIN(rad * plon(:, :)) & |
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| 37 | + py(:, :) * COS(rad * plon(:, :)) |
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| 38 | |
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| 39 | pv(:, :) = & |
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| 40 | - px(:, :) * SIN(rad * plat(:, :)) * COS(rad * plon(:, :)) & |
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| 41 | - py(:, :) * SIN(rad * plat(:, :)) * SIN(rad * plon(:, :)) & |
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| 42 | + pz(:, :) * COS(rad * plat(:, :)) |
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| 43 | |
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| 44 | pr(:, :) = & |
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| 45 | + px(:, :) * COS(rad * plat(:, :)) * COS(rad * plon(:, :)) & |
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| 46 | + py(:, :) * COS(rad * plat(:, :)) * SIN(rad * plon(:, :)) & |
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| 47 | + pz(:, :) * SIN(rad * plat(:, :)) |
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| 48 | |
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| 49 | IF (grid_type==regular_lonlat) THEN |
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| 50 | ! Value at North Pole |
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| 51 | IF (is_north_pole_dyn) THEN |
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| 52 | pu(:, 1) = -px (1, 1) |
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| 53 | pv(:, 1) = -py (1, 1) |
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| 54 | pr(:, 1) = 0.0 |
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| 55 | ENDIF |
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| 56 | |
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| 57 | ! Value at South Pole |
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| 58 | IF (is_south_pole_dyn) THEN |
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| 59 | pu(:, jm) = -px (1, jm) |
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| 60 | pv(:, jm) = -py (1, jm) |
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| 61 | pr(:, jm) = 0.0 |
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| 62 | ENDIF |
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| 63 | |
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| 64 | ELSE IF (grid_type==unstructured) THEN |
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| 65 | ! Pole nord pour Dynamico |
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| 66 | WHERE (plat(:, :) >= 90.0 - reps) |
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| 67 | pu(:, :) = py(:, :) |
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| 68 | pv(:, :) = -px(:, :) |
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| 69 | pr(:, :) = 0.0e0 |
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| 70 | END WHERE |
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| 71 | |
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| 72 | ELSE |
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| 73 | abort_message = 'Problem: unknown grid type' |
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| 74 | CALL abort_physic(modname, abort_message, 1) |
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| 75 | END IF |
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| 76 | |
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| 77 | END SUBROUTINE geo2atm |
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