Atmosphere (대기)

Korean Meteorological Society (한국기상학회)
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Analysis on the Relationship between the Korean Temperature and the Atmospheric Circulation over the Northern Hemisphere during Winter

우리나라 겨울철 기온과 북반구 대기 순환과의 상관성 분석

  • Lim, So-Min (Department of Environmental Marine Sciences, Erica, Hanyang University) ;
  • Yeh, Sang-Wook (Department of Environmental Marine Sciences, Erica, Hanyang University) ;
  • Kim, Gong-Rae (TUV SUD KOCEN Ltd.)
  • 임소민 (한양대학교 과학기술학부 해양환경과학과) ;
  • 예상욱 (한양대학교 과학기술학부 해양환경과학과) ;
  • 김공래 ((주)코센)
  • Received : 2012.01.06
  • Accepted : 2012.02.27
  • Published : 2012.06.30
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Abstract

This study investigates the relationship between the Korean temperature and the atmospheric circulation such as Arctic Oscillation, Siberian High and Aleutian Low during the winter (December-January) for the period of 1970-2011. It is found that all indices to represent aforementioned circulations are significantly correlated with Korean winter temperature for the period of 1970 - 2011. There are marked contrasts in such relationship, however, before and after the mid-1980s when a significant regime shift of Korean winter temperature occurred. While Korean winter temperature has a close relationship with Arctic Oscillation after the mid-1980s, its relationship with Siberian High and Aleutian Low is weakened. The composite analysis between a positive and negative phase of Arctic Oscillation before and after the mid-1980s is conducted to examine a recent strengthening of Arctic Oscillation-Korean winter temperature relationship. It is found that the structural changes of low-level wind and the geopotential height at 500 hPa between the two phases of Arctic Oscillation are more effective to influence Korean winter temperature after the mid-1980s. This may induce a close relationship between the Korean winter temperature variability and Arctic Oscillation after the mid-1980s compared to before the mid-1980s.

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References

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