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
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 2023-08-18T18:40:02.650820
Metadata Record Identifier edu.ucar.opensky::articles:3263
Metadata Language eng; USA
Suggested Citation Rocken, Christian, Van Hove, Teresa, Ware, Randolph. (1997). Near real-time GPS sensing of atmospheric water vapor. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7rf5tvg. Accessed 26 June 2025.

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