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| 12 | !$Id: t_int.F90 10 2007-08-09 12:43:01Z acosce $ |
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| 13 | !! ========================================================================= |
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| 14 | !! INCA - INteraction with Chemistry and Aerosols |
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| 15 | !! |
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| 16 | !! Copyright Laboratoire des Sciences du Climat et de l'Environnement (LSCE) |
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| 17 | !! Unite mixte CEA-CNRS-UVSQ |
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| 18 | !! |
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| 19 | !! Contributors to this INCA subroutine: |
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| 20 | !! |
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| 21 | !! |
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| 22 | !! Anne Cozic, LSCE, anne.cozic@cea.fr |
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| 23 | !! Yann Meurdesoif, LSCE, yann.meurdesoif@cea.fr |
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| 24 | !! |
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| 25 | !! This software is a computer program whose purpose is to simulate the |
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| 26 | !! atmospheric gas phase and aerosol composition. The model is designed to be |
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| 27 | !! used within a transport model or a general circulation model. This version |
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| 28 | !! of INCA was designed to be coupled to the LMDz GCM. LMDz-INCA accounts |
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| 29 | !! for emissions, transport (resolved and sub-grid scale), photochemical |
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| 30 | !! transformations, and scavenging (dry deposition and washout) of chemical |
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| 31 | !! species and aerosols interactively in the GCM. Several versions of the INCA |
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| 32 | !! model are currently used depending on the envisaged applications with the |
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| 33 | !! chemistry-climate model. |
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| 34 | !! |
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| 35 | !! This software is governed by the CeCILL license under French law and |
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| 36 | !! abiding by the rules of distribution of free software. You can use, |
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| 37 | !! modify and/ or redistribute the software under the terms of the CeCILL |
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| 38 | !! license as circulated by CEA, CNRS and INRIA at the following URL |
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| 39 | !! "http://www.cecill.info". |
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| 40 | !! |
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| 41 | !! As a counterpart to the access to the source code and rights to copy, |
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| 42 | !! modify and redistribute granted by the license, users are provided only |
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| 43 | !! with a limited warranty and the software's author, the holder of the |
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| 44 | !! economic rights, and the successive licensors have only limited |
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| 45 | !! liability. |
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| 46 | !! |
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| 47 | !! In this respect, the user's attention is drawn to the risks associated |
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| 48 | !! with loading, using, modifying and/or developing or reproducing the |
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| 49 | !! software by the user in light of its specific status of free software, |
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| 50 | !! that may mean that it is complicated to manipulate, and that also |
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| 51 | !! therefore means that it is reserved for developers and experienced |
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| 52 | !! professionals having in-depth computer knowledge. Users are therefore |
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| 53 | !! encouraged to load and test the software's suitability as regards their |
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| 54 | !! requirements in conditions enabling the security of their systems and/or |
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| 55 | !! data to be ensured and, more generally, to use and operate it in the |
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| 56 | !! same conditions as regards security. |
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| 57 | !! |
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| 58 | !! The fact that you are presently reading this means that you have had |
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| 59 | !! knowledge of the CeCILL license and that you accept its terms. |
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| 60 | !! ========================================================================= |
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| 61 | |
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| 62 | |
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| 63 | SUBROUTINE T_INT( p, t, t500, t200 ) |
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| 64 | !---------------------------------------------------------------- |
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| 65 | ! ... Interpolate for temperature on 500 and 200mb surfaces |
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| 66 | !---------------------------------------------------------------- |
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| 67 | USE INCA_DIM |
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| 68 | |
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| 69 | IMPLICIT NONE |
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| 70 | |
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| 71 | !---------------------------------------------------------------- |
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| 72 | ! ... Dummy args |
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| 73 | !---------------------------------------------------------------- |
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| 74 | REAL, INTENT(in) :: p(PLEV) ! pressure in pascals |
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| 75 | REAL, INTENT(in) :: t(PLEV) ! temperature on grid |
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| 76 | REAL, INTENT(out) :: t500, t200 ! temp at 500 and 200mb |
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| 77 | |
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| 78 | !---------------------------------------------------------------- |
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| 79 | ! ... Local variables |
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| 80 | !---------------------------------------------------------------- |
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| 81 | INTEGER :: k, k1 |
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| 82 | REAL :: delp |
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| 83 | |
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| 84 | IF( p(PLEV) < 500.e2 ) THEN |
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| 85 | t500 = t(PLEV) |
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| 86 | k1 = PLEVP |
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| 87 | ELSE |
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| 88 | DO k = PLEVM,1,-1 |
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| 89 | IF( p(k) < 500.e2 ) THEN |
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| 90 | k1 = k |
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| 91 | EXIT |
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| 92 | END IF |
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| 93 | END DO |
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| 94 | delp = LOG( 500.e2/p(k) ) / LOG( p(k+1)/p(k) ) |
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| 95 | t500 = t(k) + delp * (t(k+1) - t(k)) |
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| 96 | END IF |
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| 97 | DO k = k1-1,1,-1 |
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| 98 | IF( p(k) < 200.e2 ) THEN |
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| 99 | EXIT |
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| 100 | END IF |
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| 101 | END DO |
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| 102 | delp = LOG( 200.e2/p(k) ) / LOG( p(k+1)/p(k) ) |
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| 103 | t200 = t(k) + delp * (t(k+1) - t(k)) |
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| 104 | |
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| 105 | END SUBROUTINE T_INT |
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