VAP : Wind Profiler Demonstration Network GPS (WPDNGPS)

Instrument Categories
Atmospheric Profiling

General Overview

The GPS-Met Observing Systems Branch of NOAA develops and assesses techniques to measure atmospheric water vapor using ground-based Global Positioning System (GPS) receivers. The branch was formed in response to the need for improved moisture observations to support weather forecasting, climate monitoring, and research. The primary goals of the branch are to demonstrate the major aspects of an operational GPS integrated precipitable water vapor (IPW) monitoring system, facilitate assessments of the impact of these data on weather forecasts, assist in the transition of these techniques to operational use, and encourage the use of GPS meteorology for atmospheric research and other applications.

Output Products

  • 30wpdngps : Wind Profiler Demo Network (WPDN): total precipitable water vapor from GPS, 30 min

Primary Measurements

The following measurements are those considered scientifically relevant.


Southern Great Plains
SGPX1 Browse DataExternal Data (satellites and others)


Laurie Gregory
Brookhaven National Laboratory
(631) 344-2266

Alice Cialella
Brookhaven National Laboratory
(631) 344-3286