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http://dx.doi.org/10.11003/JPNT.2014.3.4.143

Development of Time-dependent mean Temperature Equations for GPS Meteorology  

Ha, Jihyun (spatial Information Research Institute)
Publication Information
Journal of Positioning, Navigation, and Timing / v.3, no.4, 2014 , pp. 143-147 More about this Journal
Abstract
The mean temperature is one of the key parameters in computing Precipitable Water Vapor (PWV) from Global Positioning System (GPS) measurements and is usually derived as a function of surface temperature through the use of a mean temperature equation (MTE). In this study, two new types of MTEs were developed as functions solely of the observation time so that the mean temperature can be obtained without surface temperature measurements. To validate the new models, we created one-year time series of GPS-derived PWV using the new MTEs and compared them with the radiosonde-observed PWV. The bias and root-mean-square error were on the other of ~1 mm and ~2 mm, respectively.
Keywords
GPS; GPS meteorology; mean temperature equation; precipitable water vapor;
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