Physics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3513803f&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 13, CiteID L13803
Physics
4
Geodesy And Gravity: Atmosphere Monitoring With Geodetic Techniques (6952), Atmospheric Composition And Structure: Instruments And Techniques, Biogeosciences: Remote Sensing
Scientific paper
Precipitable water vapor (PWV) was measured using a shipborne Global Positioning System (GPS) during a two month cruise in the equatorial Indian Ocean. More than 300 profiles were also observed by radiosondes released from the ship during the experiment. GPS atmospheric delay and PWV was estimated and compared to the radiosonde observations. The GPS-PWV is in good agreement with the radiosonde PWV (RS-PWV) with an rms error of 2.27 mm and a mean difference of less than 1 mm during the nighttime. In the daytime, the dry bias of RS-PWV becomes 3.63 mm. Thus GPS-PWV observed from a ship under way in the open ocean is sufficiently accurate. The ship based GPS-PWV data are accurate to be useful for numerical weather predictions as well as for the calibration of the satellite remote sensors.
Fujita Masaki
Kimura Fujio
Yoneyama Kyoko
Yoshizaki Motoko
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