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GCOS Surface Network (GSN) - Data Access

The GSN is a baseline network comprising a subset of about 1000 stations chosen mainly to give a fairly uniform spatial coverage from places where there is a good length and quality of data record. Near Real Time data are available at the GSN Monitoring Centre (GSNMC). Historical GSN data are available online from the NOAA NCEI in Asheville, North Carolina, USA.

Data Access

  • Near Real Time Data at GSN Monitoring Centre (GSNMC): Monthly averages and totals of certain surface meteorological variables at the GSN stations are reported via the GTS shortly after the end of the month. The final GSNMC dataset is sent on a monthly basis to the NOAA NCEI, after the QC of the CLIMAT temperature and precipitation data has been completed (in general about 2 months after the end of the observation month).
  • Historical Data at NOAA NCEI in Asheville North Carolina.  The  GHCN-D dataset integrates daily climate observations from approximately 30 different data sources including the GSN.


Performance Indicators

Photo Metadata

  • GSN Photo Metadata contains photographs of Global Climate Observing System (GCOS) Surface Network (GSN) stations that have been submitted to the NCEI by GCOS Focal Points, the latter designated by the World Meteorological Organization (WMO). This cabinet supports the metadata efforts between the NCEI and the WMO in visually documenting the metadata of GSN stations' instrumentation and the nearby topography (Link)