| 1 | !!---------------------------------------------------------------------- |
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| 2 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 3 | !! $Id$ |
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| 4 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 5 | !!---------------------------------------------------------------------- |
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| 6 | |
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| 7 | SUBROUTINE obs_level_search( kgrd, pgrddep, kobs, pobsdep, kobsk ) |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | !! *** ROUTINE obs_level_search *** |
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| 10 | !! |
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| 11 | !! ** Purpose : Search levels to find matching level to observed depth |
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| 12 | !! |
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| 13 | !! ** Method : Straightforward search |
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| 14 | !! |
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| 15 | !! ** Action : Will return level associated with T-point below the obs |
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| 16 | !! depth, except when observation is in the top box will |
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| 17 | !! return level 2. Also, if obs depth greater than depth |
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| 18 | !! of last wet T-point (kpk-1) will return level kpk. |
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| 19 | !! |
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| 20 | !! History : |
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| 21 | !! ! 2001-11 (N. Daget, A. Weaver) |
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| 22 | !! ! 2006-03 (A. Weaver) NEMOVAR migration. |
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| 23 | !! ! 2006-05 (K. Mogensen) Moved to to separate routine. |
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| 24 | !! ! 2006-10 (A. Weaver) Cleanup |
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| 25 | !! ! 2008-10 (K. Mogensen) Remove assumptions on grid. |
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| 26 | !! ! 2020-04 (R. King/RJR) Add Rob's fix |
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| 27 | !! ! https://code.metoffice.gov.uk/trac/utils/ticket/335 |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | |
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| 30 | !! * Arguments |
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| 31 | INTEGER, INTENT(IN) :: kgrd ! Number of gridpoints |
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| 32 | REAL(KIND=wp), DIMENSION(kgrd), INTENT(INOUT) :: & |
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| 33 | & pgrddep ! Depths of gridpoints |
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| 34 | INTEGER, INTENT(IN) :: & |
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| 35 | & kobs ! Number of observations |
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| 36 | REAL(KIND=wp), DIMENSION(kobs), INTENT(INOUT) :: & |
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| 37 | & pobsdep ! Depths of observations |
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| 38 | INTEGER ,DIMENSION(kobs), INTENT(OUT) :: & |
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| 39 | & kobsk ! Level indices of observations |
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| 40 | |
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| 41 | !! * Local declarations |
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| 42 | INTEGER :: ji |
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| 43 | INTEGER :: jk |
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| 44 | |
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| 45 | !------------------------------------------------------------------------ |
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| 46 | ! Search levels for each observations to find matching level |
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| 47 | !------------------------------------------------------------------------ |
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| 48 | DO ji = 1, kobs |
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| 49 | kobsk(ji) = 1 |
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| 50 | depk: DO jk = 2, kgrd-1 |
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| 51 | IF ( pgrddep(jk) >= pobsdep(ji) ) EXIT depk |
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| 52 | END DO depk |
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| 53 | kobsk(ji) = jk |
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| 54 | END DO |
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| 55 | |
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| 56 | END SUBROUTINE obs_level_search |
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