Atmosphere (대기)

Korean Meteorological Society (한국기상학회)
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Estimation of Water Vapor Vertical Profiles in the Atmosphere Using GPS Measurements

GPS 관측 자료를 이용한 대기 수증기 연직 분포 추정

  • Ha, Jihyun (Department of Geoinformatic Engineering, Inha University) ;
  • Park, Kwan-Dong (Department of Geoinformatic Engineering, Inha University)
  • 하지현 (인하대학교 지리정보공학과) ;
  • 박관동 (인하대학교 지리정보공학과)
  • Received : 2009.07.14
  • Accepted : 2009.09.07
  • Published : 2009.09.01
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Abstract

Measurements of the three-dimensional water vapor distribution in the atmosphere are important for forecast and analysis of meteorological phenomenon. In this study, two Global Positioning System (GPS) campaign networks were installed in Jeju Island and Kangwon-do to construct the vertical water vapor profile solely based on GPS measurements. We implemented a layer model to get the wet refractivity profile and compared the result with radiosonde measurements. The result showed that the vertical profiles from GPS and radiosonde agree well. The bias, root-mean-square error (RMSE) and standard deviation of GPS wet refractivities compared with radiosonde measurements were in the range of 6.6~11.1 mm $km^{-1}$, 11.9~13.9 mm $km^{-1}$, and 4.3~12.3 mm $km^{-1}$, respectively.

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