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Monitoring the Health of
Global In Situ Observing Networks


The on-going project to monitor the health of many weather and climate observing networks will be addressing many global in situ networks.

  • Health of the GCOS Upper Air Network (GUAN)
    The GUAN is a global network of stations that measure the free atmosphere by regularly launching instrumented balloons. A subset of the full radiosonde network, GUAN stations were selected based on their spatial distribution and length and quality of their historical observations.

  • Health of the GCOS Surface Network (GSN)
    The GSN stations are a collection of the highest quality and longest operating surface weather observing stations in the world. These stations provide daily and monthly observations which are used to monitor the global climate.

Global in situ networks to be addressed in the future:

  • The Volunteer Observing Ships Network (VOS)
    Mariners have been systematically taking observations of the weather and sea conditions, including sea surface temperatures, since 1853. This network continues to operate today with thousands of observations being taken by approximately 7,000 ships.
    VOSClim Homepage


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For information pertaining to this page or any other Health of the Networks related questions:
NCDC.Network.Performance@noaa.gov