In this paper, changes in the intensity (e.g., central pressure and maximum sustained wind speed) of Tropical Cyclone (TC) in summer in the regions located at 30 oN in East Asia from 1988 to 1991 were found. The intensity of TC from 1991 to 2007 was much higher than that of TC from 1965 to 1988. The reason for this was that the frequency of TCs passing China from 1991 to 2007 was much lower than that of TCs from 1965-1988 because a northeasterly wind caused by high-pressure circulation in East Asia got severer along the East Asian coast. Instead, TCs moved from the eastern region of the Tropical West Pacific to Korea and Japan mainly after passing the East China Sea due to the low-pressure circulation strengthened in the subtropical waters of East Asia. In addition, low Vertical Wind Shear (VWS) was created along the mid-latitude regions of East Asia and the main path of TCs from 1991 to 2007. Most of the regions in the Northwestern Pacific showed higher Sea Surface Temperature (SST) from 1991 to 2007, and had a good environment where TCs were able to maintain a higher intensity on the mid-latitude. In particular, a low sensible heat flux occurred due to high snow depth in East Asia in the spring of 1991 to 2007. Accordingly, the lower layer of East Asia showed high-pressure circulation, and the sea surrounding East Asia showed low-pressure circulation. Thus, the typical west-high, east-low pattern of winter atmospheric pressure was shown. The possibility of snowfall in East Asia in spring to be used as a factor for predicting the summer intensity of TC in the mid-latitude regions of East Asia was insinuated. The characteristics of TC in a low-latitude region were the same in Korea. The latest intensity of TCs got higher, and the landing location of TCs gradually changed from the west coast to the south coast.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 자료
  2.2. 분석방법
 3. 동아시아의 30 ˚N에서 태풍강도의 기후학적 특성
 4. 동아시아의 30 ˚N에서 태풍활동의 변화
  4.1. 태풍 강도
  4.2. 태풍 이동빈도
  4.3. 종관 환경
  4.4. 이전 봄의 징후
 5. 한국 상륙 태풍
 6. 결 론
 참 고 문 헌v

• 최기선(기상청) | Ki-Seon Choi (National Institute of Meteorological Research, Korea Meteorological Administration) Corresponding author
• 김백조(기상청) | Baek-Jo Kim (National Institute of Meteorological Research, Korea Meteorological Administration)
• 이성로(국립목포대학교 토목공학과) | Seong-Lo Lee (Department of Civil Engineering, Mokpo National University)
• 김호경(서울대학교 건설환경공학부) | Ho-Kyung Kim (Department of Civil & Environmental Engineering, Seoul National University)
• 이지선(부경대학교 환경대기과학과) | Ji-Sun Lee (Department of Environmental Atmospheric Sciences, Pukyong National University)