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dimitri |
1.4 |
heimbach@mit.edu 07-Nov-2002. |
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heimbach |
1.2 |
This verification experiment is almost identical to the |
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global_ocean.90x40x15 experiment, except that it uses |
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the exf (and cal) package instead of the |
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external_fields_load routine. |
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To obtain identical results between the two experiments, |
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the following 2 modifications are necessary: |
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1. in external_fields_load.F: |
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replace the line |
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Imytm=int(myTime*rdt+0.5) |
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by |
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Imytm=int((myTime+1296000.)*rdt+0.5) |
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2. in exf_set_climsst.F: |
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comment the 'quality' check, i.e. avoid the setting |
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to freezing temperature if less than climtempfreeze. |
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dimitri |
1.3 |
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================================ |
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menemenlis@jpl.nasa.gov 05-Aug-2003 |
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dimitri |
1.4 |
Input-field spatial interpolation has been added to pkg/exf. |
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dimitri |
1.3 |
It is enabled by defining CPP option USE_EXF_INTERPOLATION |
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in EXF_CPPOPTIONS.h or in ECCO_CPPOPTIONS.h |
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dimitri |
1.4 |
Both bi-linear and bi-cubic interpolation schemes are supported. |
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dimitri |
1.3 |
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dimitri |
1.4 |
This package is a placeholder until a more general coupler |
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is made available by the ESMF project. The output grid can be |
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arbitrary (cubed-sphere should be OK), but it is assumed that |
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the input grid is Cartesian with arbitrary latitude increments |
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in the y-direction and with equidistant longitude increments in |
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dimitri |
1.3 |
the x-direction. The input grid must encompass the complete |
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output grid in the y-direction (i.e., extrapolation is not |
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dimitri |
1.4 |
supported). It is also assumed that the grid is periodic in |
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the x-direction; to use the interpolation routine with a |
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non-periodic domain, make sure there is sufficient padding |
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at the edges, i.e., two points for bicubic and one for bilinear |
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interpolation. |
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dimitri |
1.3 |
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The verification/global_with_exf experiment has been modified |
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to use the USE_EXF_INTERPOLATION option, the input grids |
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being defined by variables *_lon0, *_lon_inc, *_lat0, *_lat_inc |
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*_nlon and *_nlat in input/dat.exf and input/data.exf_clim |
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*_lon0, *_lat0 :: lon and lat of sw corner of global input grid |
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*_lon_inc :: scalar x-grid increment |
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*_lat_inc :: vector y-grid increments |
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*_nlon and *_nlat :: input x-grid and y-grid size |
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In this particular example the input and output grids are |
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dimitri |
1.4 |
the same, so the results of the verification experiment remain |
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dimitri |
1.3 |
unchanged from before. |