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WorkingGroups/ConfigurationManager (diff) – NEMO

Changes between Version 12 and Version 13 of WorkingGroups/ConfigurationManager


Ignore:
Timestamp:
2013-02-25T10:29:27+01:00 (11 years ago)
Author:
jpaul
Comment:

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  • WorkingGroups/ConfigurationManager

    v12 v13  
    7777 
    7878= ''' 3. How NOC creates regional configuration ''' = 
    79  1. Hypothesis 
    80  1. Limits 
    81  1. Coordinates 
    82  1. Bathymetry 
    83  1. Boundary condition 
    84  1. Initial condition 
    85  1. Tide 
    86  1. Runoff 
    87  1. Surface forcing 
     79 
     80 1. Boundary condition : BDY tools 
     81The BDY subroutines can be employed to communicate information from out-side the regional model domain into the interior while supporting both outflow and inflow conditions. This set of tools was born out of a requirement to have a generic method by which to provide boundary data for use by these subroutines. The original code for these tools was written in Mathworks Matlab. It was subsequently translated into Python for wider distribution and to facilitate development. The Python port is 90% complete and should be finished at tested by the end of the month. At present the tools have only been tested by transferring data from global ORCA simulations to refined regional domains, although in principle could use non-ORCA input to generate BDY data. 
     82 * Works using a NEMO style namelist to initiate BDY configuration. 
     83 * Automatic identication of BDY points from a user chosen or predefined mask. 
     84 * KDTree nearest neighbour matchup between the identied BDY points and the associated locations on source grid. 
     85 * Data are rst interpolated (horizontally) from source grid to destination BDY points using: 
     86  * Bilinear 
     87  * Gauss like - distance weighted function using nearest 9 points with a decorrelation distance r0 proportional to dx*cos(lat(j,i)) 
     88  * Nearest - takes closest point on distance (for use with similar res src and dst grids) 
     89 
     90 * Then in the vertical 
     91  * Linear 
     92  * Cubic Spline 
     93 * Output in NEMO v3.2/3.3 and 3.4 forms Time stretching used to accommodate mismatch in source and destination calendars 
     94 * Optional smoothing of BDY boundary (post interpolation) 
     95 * Should be able to accept non NEMO netcdf src les, but not tested yet 
     96 * Handles rotation of vector quantities and can accommodate rotated grids (e.g. pan arctic) 
     97 * At present is only coded to use TPXO7.2 inverse tidal model to provide tidal boundary conditions 
     98 
    8899= ''' 4. How MetOffice creates regional configuration ''' = 
    89100 1. Hypothesis