ESMF_regrid

I need some advise please with regard to regridding.

I have 3 different data files (rectilinear and curvilinear) with different resolutions:

  *
PRISM is gridded data (cellsize is 0.041667 decimal degrees),
  *
WRF (curvilinear dx= 12 km by dy = 12 km), and
  *
NARR 0.3 degrees (32km) resolution

I want to compare a variable (precipitation) over a specific region (namely Nebraska).

Should I regrid from high to low resolution (WRF and PRISM - source files) and NARR (destination)???

Kindly give me some tips.

Thanks.

Jane

PRISM (rectilinear)

ncols 1405

nrows 621

xllcorner -125.020833

yllcorner 24.062500

cellsize 0.041667
NODATA_value -9999

0.041667 decimal degrees = 4.625037 km

Wrf (curvilinear)

      DY : 12000
      DX : 12000
      BOTTOM-TOP_GRID_DIMENSION : 28
      SOUTH-NORTH_GRID_DIMENSION : 61
      WEST-EAST_GRID_DIMENSION : 74
      SIMULATION_START_DATE : 2008-01-01_00:00:00
      START_DATE : 2008-03-31_21:00:00
      TITLE : UNL RCMF WRF daily archive
   dimensions:
      time = 30 // unlimited
      pres_lev = 11
      south_north = 60
      west_east = 73
      soil_layers = 4

narr (curvilinear)

The grid resolution is 349x277 which is approximately 0.3 degrees (32km) resolution at the lowest latitude.

Jane Okalebo
PhD student
HPRCC, School of Natural Resources
University of Nebraska-Lincoln
249 Hardin Hall
3310 Holdrege,
Lincoln, Nebraska 68583-0749 U.S.A.

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Received on Tue Sep 11 02:05:27 2012