Near real-time GPS sensing of atmospheric water vapor

We describe sensing of atmospheric column water vapor in near real-time using the Global Positioning System (GPS). We use predicted GPS orbits for automated computation of vertical column water vapor within 30 minutes of GPS data collection. Based on a 4 month comparison, near real-time GPS column water vapor agrees with radiosondes and radiometers within 2 mm rms. Our near real-time column water vapor data are posted hourly at www.unavco.ucar.edu. They are available for assimilation in numerical weather models and for other applications.

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An edited version of this paper was published by AGU. Copyright 1997 American Geophysical Union.
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Author Rocken, Christian
Van Hove, Teresa
Ware, Randolph H.
Publisher UCAR/NCAR - Library
Publication Date 1997-12-15T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T17:56:36.615727
Metadata Record Identifier edu.ucar.opensky::articles:3263
Metadata Language eng; USA
Suggested Citation Rocken, Christian, Van Hove, Teresa, Ware, Randolph H.. (1997). Near real-time GPS sensing of atmospheric water vapor. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7rf5tvg. Accessed 14 August 2025.

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