Atmosphere (대기)

Korean Meteorological Society (한국기상학회)
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Comparative Research of Fog Using the Regular Observation and GPS Integrated Water Vapor

정규관측자료와 GPS 연직누적 수증기량을 이용한 안개에 대한 비교연구

  • Lee, Jaewon (Space Geodesy Division, Korea Astronomy and Space Science Institute) ;
  • Cho, Jungho (Space Geodesy Division, Korea Astronomy and Space Science Institute) ;
  • Baek, Jeongho (Space Geodesy Division, Korea Astronomy and Space Science Institute) ;
  • Park, Jong-Uk (Space Geodesy Division, Korea Astronomy and Space Science Institute) ;
  • Park, Chieup (Republic of Korea Air Force, 73th Weather Group)
  • 이재원 (한국천문연구원 우주측지연구부) ;
  • 조정호 (한국천문연구원 우주측지연구부) ;
  • 백정호 (한국천문연구원 우주측지연구부) ;
  • 박종욱 (한국천문연구원 우주측지연구부) ;
  • 박지업 (공군 제 73 기상전대)
  • Received : 2008.09.05
  • Accepted : 2008.12.09
  • Published : 2008.12.31
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Abstract

In this paper, we analyzed the physical and thermodynamic characteristics of fog by using the integrated water vapor (IWV) from Global Positioning System (GPS) networks and the regular observation data of meteorological stations in GPS sites. The cases of a radiation and an advection fog were selected as samples, the conversions of water substance from the water vapor to cloud water in fog were detected by the Bulk Water-Continuity Model, and the pattern analysis is adapted on GPS IWV, temperature, wind and relative humidity. Under the specific hypothesis (saturation and stable), GPS IWV could detect quantitatively the phase changing between the water vapor and cloud water content with condensation/evaporation during the formation and dissipation of fog. After it reaches to the saturation, the relative humidity can be a limited indicator for fog. However, GPS IWV can detect the status change of fog even after the saturation. It has indicated that GPS IWV could be a new observing technique for the processes of the fog formation and the dissipation.

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Acknowledgement

Supported by : 기상청