DOI QR코드

DOI QR Code

GMS 기상위성 영상자료를 이용한 태풍강도 분석

Typhoon Intensity Analysis using GMS Meteorological Satellita Image Data

  • 서애숙 (기상연구소 원격탐사연구실) ;
  • 김동호 (기상연구소 원격탐사연구실) ;
  • 박경선 (한국전력기술주식회사 환경기술부)
  • 발행 : 1995.09.01

초록

현재 전세계적으로 널리 사용되고 있는 드보라크 방법에 의한 태풍강도 분석법을 1991년 우리나라에 영향을 준 6개 태풍사례에 대해 실제 적용하여 강도분석을 하였다. 또한 분석된 태풍 강도를 이용하여 태풍의 중심기압과 최대풍속을 산출하는 상관 관계식을 계산하여 제시하였다. ORCHID 태풍에 이 관계식을 실제 적용하여 관측값과 비교하여 그 정확도를 평가하였다. 그 결 과 중심기압(MSLP : Minimum Sea Level Pressure)과 최대풍속(MWS : Maximum Wind Speed)이 관측값보다 약간 낮은 값을 보였지만 전체적인 패턴은 비슷하게 나타났다. 그러나 미국 국립 해양 대기청(NOAA) 및 일본 기상청(NAA)에 의해 작성된 상관 관계표로 산출된 값은 관측 값과는 많은 차이를 보여 주었다. One of the world widely used methods in determining the intensity of a typhoon is Dvorak's technique. By applying the Dvorak's method to the typhoons which affected our country in various degress and extents without regard to their individual severity, we estimated their intensity for six different cases of typhoons. We have derived a regression equation of estimating the central pressures and maximum wind speeds for the six selected typhoons. Their intensity was estimated from the Dvork's method using GMS satellite image data. The derived equation has tested to typhoon ORCHID and the computed values have been compared with the direct observations in its central pressure and maximum wind speed. The computed values in the Dvork's method are smaller in their magnitudes than the observed corresponding values. But their relative magnitudes do not change so much at each different time step. But our results are significantly different from those of NOAA and JMA. The cause of differences are not investigated in depth in this analysis.

One of the world widely used methods in determining the intensity of a typhoon is Dvorak's technique. By applying the Dvorak's method to the typhoons which affected our country in various degress and extents without regard to their individual severity, we estimated their intensity for six different cases of typhoons. We have derived a regression equation of estimating the central pressures and maximum wind speeds for the six selected typhoons. Their intensity was estimated from the Dvork's method using GMS satellite image data. The derived equation has tested to typhoon ORCHID and the computed values have been compared with the direct observations in its central pressure and maximum wind speed. The computed values in the Dvork's method are smaller in their magnitudes than the observed corresponding values. But their relative magnitudes do not change so much at each different time step. But our results are significantly different from those of NOAA and JMA. The cause of differences are not investigated in depth in this analysis.

키워드

참고문헌

  1. Atmospheric Science Paper No. 277, Department of Atmospheric Science Tropical cyclone cloud and intensity relationships Arnold,C.P.
  2. NOAA Memorandum NESS 36 v.20233 A technique for the analysis and forecasting of tropical cyclone intensities from satellite picture Dvorak,V.F.
  3. NOAA Technical Report NESDIS v.11 Tropical cyclone intensity analysis using satellite dat Dvorak,V.F.
  4. Annual report on activities of the RSMC Tokyo-Typhoon Center Japan Mateorological Agency
  5. Mon. Wea. Rev. v.109 A numerical simulation study on the genesis of a tropical storm Kurihara,Y.;R.E.Tuleya
  6. NOAA Technical Memorandum ERL WMPO-20, Weather Modification Program Office v.80303 An evaluation of the accuracy of tropical cyclone intensities and locations determined from satellite pictures Sheet,R.C.;P.G.Grieman
  7. 기상연구소 연구보고서 MR94R-003 기상위성자료를 이용한 태풍중심 위치결정 방법 기상연구소
  8. 한국기상학회지 v.28 no.3 기상위성 영상에서의 태풍중심 위치 결정방법 서애숙;김금란;이충기;이민선
  9. 기상청 예보기술지 v.3 no.2 기상위성 자료를 이용한 태풍강도 분석법 서애숙