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/