Variability of GPS-Based Precipitable Water Vapor over Antarctica: Comparison Between Observations and Predictions

• Main Author: Wayan Suparta
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Scott Base; Antarc*; Antarctica; Macquarie Island
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.390.6425; http://www.idosi.org/wasj/wasj12(9)/35.pdf

Abstract: This paper presents observations of precipitable water vapor (PWV) from the Global Positioning System (GPS) signals and the surface meteorological measurements. Three stations in Antarctica that are Scott Base (SBA), Casey (CAS1), Macquarie Island (MAC1) and Syowa (SYOG) were taken as the location of observation. For analysis, the data gathered from January to December 2004 are analyzed. The PWV content for Antarctic region was obtained below 10 mm (on average) with an accuracy of 1~2 mm and its variability shows a U-profile pattern. Based on this accuracy, the PWV time series for Antarctic region can be predicted through the surface temperature measurements, which is cost effective, continuous and capable of climate monitoring. Key words: GPS Meteorology PWV variability Antarctica Prediction