The REANALYSIS, GDAS and FNL archives cover the globe. However, if you have access to
ECMWF data, some sample software is provided when you
download the PC version of HYSPLIT
that you can use as a guide to convert ECMWF grib format to a format
that Hysplit can use.
The following documentation may be of help to you...
The directory that the ECMWF decoder is located in:
./data2arl/ecmwf
This directory contains a decoder for ECMWF lat/lon GRIB
data files, which are converted to the ARL packed format
by ecm2arl. ECM2ARL can processes multiple time periods
per execution. The output data are gridded according
the grid as defined in the input section of ECM2ARL. The
output grid is written to a file called "arldata.bin" and
diagnostic information is written to the MESSAGE file.
If the home directory contains the METDATA.CFG file, then
the output grid will be generated according to the
properties defined in this file rather than from the input
section of ECM2ARL. Compilation of the ECM2ARL requires
the ECMWF gribex software libraries, which are supplied
by ECMWF when you order your data.