NCL Graphics: WRF (mercator projection)

The WRF variables in these examples are on a native mercator projection. By default, when data are placed onto a map, NCL performs a transformation to the specified projection. This transformation is not needed for native grids. To turn off this default behavior, set tfDoNDCOverlay = True The gsn_csm_map* suite of interfaces expect global data. To turn off this default mode, set gsnAddCyclic = False. The WRF netCDF file contains the information needed to properly plot the grid, specifically: (i) the global attributes TRUELAT1, TRUELAT2 and CEN_LON and (ii) the grid latitudes (XLAT) and longitudes (XLONG). The required approach to plotting the data upon a native projection is to specify mpLimitMode = 'Corners'. This suite of examples uses an older and deprecated method of plotting WRF data. We recommend that you visit the more up-to-date The WRF variables in these examples are on a native mercator projection. By default, when data are placed onto a map, NCL performs a transformation to the specified projection. This transformation is not needed for native grids. To turn off this default behavior, set The WRF netCDF file contains the information needed to properly plot the grid, specifically: (i) the global attributes TRUELAT1, TRUELAT2 and CEN_LON and (ii) the grid latitudes (XLAT) and longitudes (XLONG). The required approach to plotting the data upon a native projection is to specify Source.


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Last Modified: April 22, 2016 @ 10:03 pm