- HYSPLIT requires meteorological data on an evenly spaced grid
- Latitude-longitude or conformal projection
- At multiple heights and time periods
- Over the duration of the simulation
- The conversion process is complicated
- It is best to use already formatted data if available!
- Conversion programs for multiple raw data formats (data2arl directory):
| | NetCDF: | arw2arl, cdf2arl, mer2arl, cesm2arl |
| | GRIB-1: | era52arl, grib2arl |
| | GRIB-2: | api2arl |
| | MM5: | mm5v3 |
- Although most data are well-documented (e.g. GRIB)
- Variables and their order within each file may vary
- Temporal resolution and vertical coordinate systems may differ
- Perhaps even for the same model
- Some customization may be required
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