Iran Meteorological Organizationwww.weather.ir
World Meteorological Organizationwww.wmo.int
European Center for Medium range Weather Forecasting (ECMWF)www.ecmwf.int
National Oceanic and Atmospheric Administration (NOAA)
www.noaa.gov
National Weather Service Organizationwww.weather.gov
World Weather Information Serviceworldweather.wmo.int
Weather Modification Associationwww.weathermodification.org
The National Center for Atmospheric Research, USwww.ncar.ucar.edu