Meteorological Data Servers

ARL

ftp://arlftp.arlhq.noaa.gov/pub/

NCEP

https://nomads.ncep.noaa.gov/pub/data/nccf/com/hysplit/prod/

University of Alaska

ftp://gdas-server.iarc.uaf.edu/gdas1/

Spain

http://www.hysplit.uhu.es/