Changes between Version 1 and Version 2 of OMI_use_global_obs


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Timestamp:
Nov 25, 2020, 3:07:51 PM (6 months ago)
Author:
lnerger
Comment:

--

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  • OMI_use_global_obs

    v1 v2  
    1717  SUBROUTINE PDAFomi_set_domain_limits(lim_coords)
    1818
    19     REAL, INTENT(in) :: lim_coords(2,2)     !< geographic coordinate array (1: longitude, 2: latitude)
    20                                             !< ranges: longitude (-pi, pi), latitude (-pi/2, pi/2)
     19    REAL, INTENT(in) :: lim_coords(2,2)     !< coordinate array (1: longitude, 2: latitude)
     20                                            !< geographic range: longitude (-pi, pi), latitude (-pi/2, pi/2)
     21                                            !< Cartesian range: (x) coordinate grows from left to right; (y) from bottom to top
    2122}}}
    2223here `lim_coords` are
    23  - (1,1) coordinate of the western edge of the domain
    24  - (1,2) coordinate of the eastern edge of the domain
    25  - (2,1) coordinate of the northern edge of the domain
    26  - (2,2) coordinate of the southern edge of the domain
    27 thus, (:,1) specifies the north-western corner of the sub-domain and (:,2) the souther-estern corner.
     24{{{
     25           (2,1)
     26   (:,1)+---------+
     27        |         |           - (1,1) coordinate of the western (or left) edge of the domain
     28        |         |           - (1,2) coordinate of the eastern (or right) edge of the domain
     29  (1,1) |         | (1,2)     - (2,1) coordinate of the northern (or upper) edge of the domain
     30        |         |           - (2,2) coordinate of the southern (or lower) edge of the domain
     31        |         |
     32        +---------+(:,2)
     33           (2,2)
     34}}}
     35thus, (:,1) specifies the north-western corner of the sub-domain and (:,2) the souther-estern corner. The first (x) coordinate grows from left to right, while the second coordinate (y) increases from bottom to the top.
    2836
    2937If the model grid is not decomposed in cardinal directions, but e.g. rotated, the coordinates should specife the extrema. Thus, lim_coords(1,1) would be the coordinate of the northernmost grid point of a domain.