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- If you specify GRIB as output format you will get a GRIB1 or GRIB2 file (depending on the parameter). By default the output will be on the native T255 grid, but you can specify a different Gaussian grid or a lat/long grid:
- If you specify a Gaussian grid other than the default T255 the data will be interpolated to your chosen resolution. The default interpolation method is bilinear for continuous parameters (e.g. Temperature) and nearest neighbour for discrete parameters (eg. Vegetation).
- If you specify a lat/lon grid the data will be interpolated to your chosen resolution.. The default interpolation method is bilinear for continuous parameters (e.g. Temperature) and nearest neighbour for discrete parameters (eg. Vegetation). The lat/long equivalent of T255 is 0.703125 deg (360/(2*(255+1))). You could use this resolution for parameters stored in GRIB2 format, but GRIB1 format only supports three decimals, so we recommend you in any case round the resolution; we recommend to 0.75x0.75 deg.
- If you specify NetCDF as output format: Our NetCDF implementation only supports regular grids, so when you extract data it is automatically interpolated from the native Gaussian grid to a regular lat/long grid. The default interpolation method is bilinear for continuous parameters (e.g. Temperature) and nearest neighbour for discrete parameters (eg. Vegetation). Regarding resolution, the lat/long equivalent of T255 is 0.703125 deg (360/(2*(255+1))). You could use this resolution for parameters stored in GRIB2 format, but GRIB1 format only supports three decimals, so we recommend you in any case round the resolution; we recommend to 0.75x0.75 deg.
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