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초록· 키워드
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This paper investigates summer precipitation change in East Asia according to switching surface boundary condition over South Korea and Shantung. Simulations are carried out by ECHO-G/S for 20 years (1980-1999). Surface condition over both areas in ECHO-G/S is represented by ocean (OCN experiment). In OCN experiment, the summer precipitation is considerably underestimated around the Korean peninsula (the dry region) and overestimated over the eastern Tibetan Plateau (the wet region). It may be related that the lack of the heat sources from the unrealistically prescribed land-sea mask weakens northward expansion of rainband and the development of convective precipitation. Moreover the simulated rainband retreats before June in connection with the early genesis of summer monsoon circulation. The systematic bias of the summer precipitation over the dry and wet regions are reduced comparing with the OCN experiment when the land-sea masks over South Korea and Shantung are realistically considered as land (LND experiment). These improvements can be explained by the thermodynamical dissimilarity between land and ocean. Enhanced warming by switching the areas from sea to land has led to develop the thermal low over Yellow Sea with the cyclonic circulation. Thus, this cyclonic circulation supports moistures from the south to the dry region and blocks to the wet region. The heat transport from the land surface to atmosphere plays a key role in the developing convective precipitation in local scale and maintaining the precipitation and the rainband. Therefore, this results indicate that the design of the realistic land-sea distribution is required for the accurate simulation of the regional precipitation.
목차
Abstract
1. 서론
2. 실험설계
3. 동아시아지역의 강수 모의 특성
4. 결론 및 토의
감사의 글
참고문헌
참고문헌 (17)
참고문헌 신청
1. [학술지(정기간행물)] - 권원태 / 2006 / 기후변화 협약 대응 지역기후시나리오 활용기술 개발(II) : 408 ~
2. [학술지(정기간행물)] - 차유미 / 2007 / ECHO-G/S를 활용한 미래 동아시아 기후 전망 / 대기 17 (1) : 55 ~ 68
3. [학술지(정기간행물)] - Chen, Ching-Sen / 2004 / Characteristics of heavy sumer rainfall in southwestern Taiwan in relation to orographic effects 82 : 1521 ~ 1543
4. [학술지(정기간행물)] - Chou,C / 11-15.doi10.1007/s00382-003-0315-7. / ,203:Land-sea heating contrast in an idealized Asian sumer monsoon. Clim. Dyn.
5. [학술지(정기간행물)] - Fu / / Precipitation charac-teristics in mid-latitude East Asia as observed by TRMM PR and TMI. J. Meteor. Soc. Japan : 1353 ~ 1369
2. [학술지(정기간행물)] - 차유미 / 2007 / ECHO-G/S를 활용한 미래 동아시아 기후 전망 / 대기 17 (1) : 55 ~ 68
3. [학술지(정기간행물)] - Chen, Ching-Sen / 2004 / Characteristics of heavy sumer rainfall in southwestern Taiwan in relation to orographic effects 82 : 1521 ~ 1543
4. [학술지(정기간행물)] - Chou,C / 11-15.doi10.1007/s00382-003-0315-7. / ,203:Land-sea heating contrast in an idealized Asian sumer monsoon. Clim. Dyn.
5. [학술지(정기간행물)] - Fu / / Precipitation charac-teristics in mid-latitude East Asia as observed by TRMM PR and TMI. J. Meteor. Soc. Japan : 1353 ~ 1369
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UCI(KEPA) : I410-ECN-0101-2009-453-016247705