Application Precision and Range of Precipitable Water Vapor Measured by GroundBased GPS
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Abstract:
By means of the atmospheric precipitable water vapor data measured by groundbased GPS at Shijiazhuang and Zhangjiakou, a comparison is made between the radiosondecalculated and the GPSretrieved precipitable water. A severe precipitation case occurred in the southern Hebei Province in July 2007 is analyzed. It is found out that the GPS retrieval of precipitable water, which is slightly greater than the radiosondederived, is more reliable and useful; the results of the two methods have accordant variation trends. For the single station, there exist certain limitations in the effective radius of the GPSretrieved perceptible water.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.