Articles | Volume 12, issue 1
Atmos. Meas. Tech., 12, 345–361, 2019
https://doi.org/10.5194/amt-12-345-2019

Special issue: Advanced Global Navigation Satellite Systems tropospheric...

Atmos. Meas. Tech., 12, 345–361, 2019
https://doi.org/10.5194/amt-12-345-2019

Research article 18 Jan 2019

Research article | 18 Jan 2019

4DVAR assimilation of GNSS zenith path delays and precipitable water into a numerical weather prediction model WRF

Witold Rohm et al.

Data sets

National Weather Service/NOAA/U.S. Department of Commerce, updated daily, NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999, Research Data Archive at the National Center for Atmospheric Research, Computational and Infor National Centers for Environmental Prediction https://doi.org/10.5065/D6M043C6

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Short summary
Assimilation of satellite navigation data into a popular weather model is yet another example of how to turn non-meteorological data into valuable information about the current state of the troposphere. Results show that observations from ground-based GPS receivers can improve humidity and rain forecasts in most severe weather events. It is another reason to extend the adoption of GPS data into weather forecasting across Europe.