Changes between Version 12 and Version 13 of WorkingGroups/ConfigurationManager
- Timestamp:
- 2013-02-25T10:29:27+01:00 (11 years ago)
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WorkingGroups/ConfigurationManager
v12 v13 77 77 78 78 = ''' 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 81 The 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 88 99 = ''' 4. How MetOffice creates regional configuration ''' = 89 100 1. Hypothesis