Attention: NCDC systems Global Summary of the Day, Global Hourly Data, Climate Indices, Climate Station Summaries and Marine Data are currently unavailable. These systems will be online by Friday, Feb 27. For immediate access to the FTP data, please visit Datasets Listing . We apologize for the inconvenience.
Weather Balloon Data
Integrated Global Radiosonde Archive (IGRA)
Radiosonde and pilot balloon observations at over 1,500 globally distributed stations for standard, surface, tropopause, and significant levels
Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC)
Station and regional-mean time series of temperature anomalies that extend from 1958 to present derived from radiosonde observations taken at globally distributed stations