Comparison of GPS slant wet delay measurements with model simulations during the passage of a squall line

Details Comparison of GPS slant wet delay measurements with model simulations during the passage of a squall line Comparison of GPS slant wet delay measurements with model simulations during the passage of a squall line

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29w..28h&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 23, pp. 28-1, CiteID 2113, DOI 10.1029/2002GL015891

Physics

1

Hydrology: Instruments And Techniques, Meteorology And Atmospheric Dynamics: Mesoscale Meteorology, Meteorology And Atmospheric Dynamics: Numerical Modeling And Data Assimilation

Scientific paper

Slant wet delay (SWD) measurements from a ground-based GPS observation network provide accurate, high-resolution moisture information for mesoscale analysis. In this study, we compared SWD simulated from a 9-km MM5 model in a prefrontal squall line event against actual GPS SWD observations by NOAA's GPS network. We found that the model simulation did not capture abrupt moisture changes and small-scale variations observed in the nonisotropic component of slant wet delays associated with the squall line. This result suggests that SWD measurements can be very useful in improving model moisture analysis.

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