지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The nonlinear characteristics of summer monsoon intraseasonal oscillation (ISO) in precipitation, which is manifested as fluctuations in convection and circulation, is one of the major difficulty on the prediction of East Asian summer monsoon (EASM). The present study aims to identify the spatial distribution and time evolution of nonlinear phases of monsoon ISO. In order to classify the different phases of monsoon ISO, Self-Organizing Map(SOM) known as a nonlinear pattern recognition technique is used. SOM has a great attractiveness detecting selfsimilarity among data elements by grouping and clustering such self-similar components. The four important patterns are demonstrated as Meiyu-Baiu, Changma, post-Changma, and dry-spell modes. It is found that SOM well captured the formation of East Asian monsoon trough during early summer and its northward migration together with enhanced convection over subtropical western Pacific and regionally intensive precipitation including Meiyu, Changma and Baiu. The classification of fundamental large scale spatial pattern and evolutionary history of nonlinear phases of monsoon ISO provides the source of predictability for extended-range forecast of summer precipitation.
목차
Abstract
1. 서론
2. 연구방법
3. 결과 및 분석
4. 결론 및 토의
감사의 글
참고문헌
참고문헌 (16)
참고문헌 신청
하경자 / 2005 / 하계몬순 기간중의 장마의 시작, 종료 및 세기의 정의 / 한국기상학회지 41(6):927~942
Ambroise, C. / 2000 / Hierarchical clustering of self-organizing maps for cloud classification / Neurocomputing 30:47~52
Cavazos, T. / 1999 / Large-scale circulation anomalies conducive to extreme precipitation events and derivation of daily rainfall in northeastern Mexico and southeastern Texas / J. Climate 12:1506~1523
Chattopadhyay, R. / 2008 / Objective Identification of nonlinear convectively coupled phases of monsoon intraseasonal oscillation: Implications for prediction / J. Atmos. Sci 65:1549~1569
Ha, K.-J. / 2005 / On interannual characteristics of climate prediction center merged analysis precipitation over the korean peninsula during the summer monsoon season / International Journal of Climatology 25:99~116
Ambroise, C. / 2000 / Hierarchical clustering of self-organizing maps for cloud classification / Neurocomputing 30:47~52
Cavazos, T. / 1999 / Large-scale circulation anomalies conducive to extreme precipitation events and derivation of daily rainfall in northeastern Mexico and southeastern Texas / J. Climate 12:1506~1523
Chattopadhyay, R. / 2008 / Objective Identification of nonlinear convectively coupled phases of monsoon intraseasonal oscillation: Implications for prediction / J. Atmos. Sci 65:1549~1569
Ha, K.-J. / 2005 / On interannual characteristics of climate prediction center merged analysis precipitation over the korean peninsula during the summer monsoon season / International Journal of Climatology 25:99~116
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UCI(KEPA) : I410-ECN-0101-2013-453-000799159