NCAR global, 2-hourly GPS precipitable water data are derived from ground-based GPS measurements of zenith
path delay (ZPD) using three different resources, including the International GNSS (Global Navigation Satellite Systems) Service (IGS) tropospheric products (since year 1995), U.S. SuomiNet (UCAR/COSMIC) products (since year 2002) and Japanese GEONET (GPS Earth Observation Network) data (~1100 stations, 1997-2005).
The data are divided into two groups: one is from GEONET network, and the data are available from 1997 to 2005; the other one combines IGS and SuomiNet network, and the data are available since year 1995 and planned to be updated yearly.
||Total Precipitable Water
||Upper Air Temperature
Every 2 hours
Earth Observing Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Wang, J., and L. Zhang, 2009: Climate applications of a global, 2-hourly atmospheric precipitable water dataset from IGS ground-based GPS measurements J. of Geodesy, 83, 209-217 (DOI: 10.1007/s00190-008-0238-5).
Wang, J., L. Zhang, A. Dai, T. Van Hove, and J. Van Baelen, 2007: A near-global, 8-year, 2-hourly atmospheric precipitable water dataset from ground-based GPS measurements J. Geophys. Res., 112, D11107 (DOI: 10.1029/2006JD007529).
ASCII (see dataset documentation)
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