Asia-Pacific Journal of Atmospheric Sciences

Korean Meteorological Society (한국기상학회)
권호 표지

The Effects of Low-Level Jet and Topography on Heavy Rainfall near Mt. Jirisan

지리산 부근 집중호우 발생시 하층제트와 지형의 영향

Park, Chang Hyoun;Lee, Hwa Woon;Jung, Woo-Sik
박창현;이화운;정우식

  • Published : 20030800
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Abstract

Synoptic scale low-level jet and meso-scale topography are very important factors associated with heavy rainfall occurred in southern Korea in summer. Sancheong near Mt. Jirisan has the highest frequency of heavy rainfall during 1973~1999. This study focuses on the contribution of low-level jet and topography to heavy rainfall occurred near Mt. Jirisan. ARPS(Advanced Regional Prediction System) model is used with one event day data in July 31 1998. The analysis of the results of four numerical experiments reveals that the main reasons of the heavy rainfall around Mt. Jirisan are high wind speed and humidity of the low-level jet and high orography. The result of the first numerical experiment which attempts to simulate the observation is used as a reference to compare with the other experiments for checking the contribution of each factor. The results show that high wind speed of the low-level jet contributes to the increase of total precipitation, and that the precision of humidity measurement is very important for the prediction of the total precipitation. The results also reveal that high orography is one of the important factors of the heavy rainfall, and that high resolution of the terrain data could be also important factor for the numerical prediction of heavy rainfalls.

Keywords

References

  1. 기상청, 1998: '98 집중호우 종합분석집
  2. 박순웅, 김성삼, 임규호, 1983: 우리나라 부근에 나타난 하층 제트와 악기상에 관한 연구. 한국기상학회지, 19(2) 20-36
  3. 부산지방기상청, 1998: 영남지방 집중호우 사례분석집. 195pp
  4. 서경환, 1995: 한반도 중부 지방에서의 지형성 강수의 분석과 수치 시뮬레이션 연구. 석사학위논문, 서울대학교, 77pp
  5. 서경환, 이동규, 1996; 한반도 중부 지방의 지형성 강수 분석과 수치시뮬레이션 연구. 한국기상학회지, 32(4), 511-533
  6. 이동규, 전종갑, 홍성유, 김홍래, 1993: 1990년 9월 10-12 일 한반도 중부 지방에 발생한 집중 호우의 수치모의 실험. 한국기상학회지, 29(2) 147-169
  7. 이동한, 2000: 지리산 집중호우 특성 연구. 예보기술발표회 보고서, 97pp
  8. 임은하, 이태영. 1994: 한반도 중부 지방의 지형이 구름 및 강수 발달에 미치는 영향 - 2차원의 수치적 연구. 한국기상학회지, 30(4). 565-582
  9. 현종훈, 1990: 수치모델을 이용한 제주도에서의 해륙풍 수치모의와 국지 강수예보에 대한 연구, 석사학위논문. 서울대학교, 64pp
  10. 홍성유, 1992: 한반도에서 발생한 집중호우의 수치모의실험, 박사학위논문, 서울대학교. 246pp
  11. 홍성유, 이동규, 1996: 한반도에서 발생한 집중호우의 열과 수분 수지. 한국기상학회지, 32(1), 87-102
  12. Chang, C. U., and M. Yoshizaki, 1989: Modeling study of the squall line observed at the Okinawa island, Workshop on TAMEX Preliminary Scientific Results. 135-142
  13. Chen, G. T. J., and C. C. Yu, 1988: Study of low-level jet and extremely heavy rainfall over northern Taiwan in the Mei-Yu season. Mon. Wea. Rev., 116, 884-891 https://doi.org/10.1175/1520-0493(1988)116<0884:SOLLJA>2.0.CO;2
  14. Klemp, J. B., and R. B. Wilhelmson, 1978: The simulation of three dimensional convective storm dynamics. J. Atmos. Sci., 35, 1070-1096 https://doi.org/10.1175/1520-0469(1978)035<1070:TSOTDC>2.0.CO;2
  15. Lee, D.-K. and S.-Y. Hong, 1989: Numerical experiments of the heavy rainfall event occurred over Korea during 1-3 September 1984. J. Korean Meteor. Soc., 25940, 233-260
  16. _____, and S.-Y. Hong, 1991: Numerical simulation of a heavy rainfall event occurred over Korean Peninsula. 9th conference on numerical weather predictin, Oct. 14-18, 1991, Denver, Colorado
  17. Lin, Y.-L., R. D. Farley, and H. D. Orville, 1993: bulk parameterization of the snow field in a cloud model. J. Climate Appl. Meteor., 22, 1065-1092 https://doi.org/10.1175/1520-0450(1983)022<1065:BPOTSF>2.0.CO;2
  18. Matsumoto, S., 1973: Lower tropospheric wind speed and precipitation activity. J. Meteor. Soc. Japan, 51, 101-107 https://doi.org/10.2151/jmsj1965.51.2_101
  19. Park, S.-U., C.-H. Joung, S.-S. Kim, D. -K. Lee, S. -C. Yoon, Y. -K. Joung and S. -G. Hong, 1986: Synoptic scale features of the heavy rainfall occurred over Korea. J. Korean Meteor. Soc., 2291, 42-81
  20. _____, H.-J. Ahn and Y.-S. Chun, 1989: Evolution of synoptic scale features associated with a long-lived convective system(21-23 July 1987), J. Korean Meteor. Soc., 25(3), 168-191
  21. Takeda, T., and K. Takase, 1980: Radar observation of rainfall system modified by orographic effect. J. Meteor. Soc. Japan, 58, 500-515 https://doi.org/10.2151/jmsj1965.58.6_500
  22. Tao, W. -K., and J. Simpson, 1993: Goddard cumulus ensemble model. Part I: Model description. Terres. Atmos. Ocean Sci., 4, 35-72
  23. Xue, M., K. K. Droegemeier, V. Wong, A. Shapiro, and K. Brewster, 1995: Advanced Regional Prediction System(ARPS) Version 4.0 User's Guide, Center for Analysis and Prediction of Storms, 380pp