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자연과학
공학
의약학
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예술체육학
복합학
DBpia AI
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AI 아이디어
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Citeasy
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지원사업
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커뮤니티
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논문 기본 정보
- 저자정보
피인용 0
초록·키워드
The interannual variability of sea surface temperature (SST) in the tropics induces changes in global-scale atmospheric circulation not only in seasonal-to-interannual time scale but also in sub-seasonal time scale such as Madden-Julian Oscillation (MJO). The present study investigates the response of Northern Hemisphere (NH) atmospheric circulation to the tropical forcing in order to explain the mechanism of the features found from the interannual variability of tropical convection and extratropical circulation in intraseasonal time scale which showed distinctive differences between warm and cold episodes of El Nino and Southern Oscillation (ENSO). The tropical convection associated with MJO are found to have latitudinal and longitudinal movement as the western Pacific warm pool evolves by the interannual variability of SST. As a mid-latitude response, the extratropical circulation experiences large contrast in the magnitude of variability between the cold and warm episodes of ENSO. To explain the cause of the magnitude difference in the NH atmospheric circulation between opposite phases of ENSO, several tropical SST forcing experiments are performed. The sensitivity experiments forced by dipole SST anomalies with maximum centered at the equator and 10 degree north with the longitudinal locations varying from the Indian Ocean to the central and eastern Pacific are integrated with 8 ensemble members. The simulated mid- to high-latitude geopotential height is shown to be in good accordance with the observation especially over the Asia-Pacific-North America sector and the magnitude of the extratropical variability is enhanced when the tropical forcing was located to the north. From the experiments, it is confirmed that the atmospheric variability in the extratropics is largely contributed by the latitudinal migration of the tropical forcing as well as the changes in longitudinal location.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-ECN-0101-2009-453-016241041
