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
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The changes in the Hadley circulation during the second half of the 20th century were examined using observations and the 20C3M (Twentieth Century Climate in Coupled Models) simulations by the 21 IPCC AR4 models. Multi-model ensemble (MME) mean shows that the mean features of the Hadley circulation, such as the intensity, magnitude, and the seasonal variations, are very realistically reproduced, compared to the ERA40 reanalysis. But the long-term trends of the Hadley circulation in 20C3M MME are quite different to those of observations. The observed intensity of the Hadley cell is persistently enhanced, particularly during boreal winter. In comparison, the meridional overturning circulations reproduced in the MME mean remains invariant in time, and even weakened in boreal summer. This discrepancy between the ERA40 and 20C3M MME is consistently shown in the overall structure of the Hadley circulations, such as mass streamfunction, the velocity potential, the vertical shear of meridional wind, and the vertical velocity in the tropical region. This results indicate that the current climate models are skill-less to capture the long-term trend of Hadley circulation yet, and should be improved in simulation of the large-scale features to enhance the confidence level of future climate change projection.
목차
Abstract
1. 서론
2. 연구 자료 및 방법
3. 연구 결과
4. 요약 및 결론
감사의 말
참고문헌
참고문헌 (24)
참고문헌 신청
1. [학술지(정기간행물)] - Betts, A. K. / 1989 / Climatic equilibrium of the atmospheric convective boundary layer over a tropical ocean / J. Atmos. Sci. 46 : 2621 ~ 2641
2. [학술지(정기간행물)] - Chen, J / 2002 / Evidence for strengthening of the tropical general circulation in the 1990s / Science 295 : 838 ~ 841
3. [학술지(정기간행물)] - Dima, I. M / 2003 / On the seasonality of the Hadley Cell / J. Atmos. Sci 60 : 1522 ~ 1526
4. [학술지(정기간행물)] - Held, I. M / 2006 / Robust responses of the hydrological cycle to global warming / J. Climate 19 : 5686 ~ 2699
5. [학술지(정기간행물)] - Hu, Y / 1979 / Observed poleward expansion of the Hadley circulation since 1979. Atmos / Chem. Phys. Discuss 7 : 9367 ~ 9384
2. [학술지(정기간행물)] - Chen, J / 2002 / Evidence for strengthening of the tropical general circulation in the 1990s / Science 295 : 838 ~ 841
3. [학술지(정기간행물)] - Dima, I. M / 2003 / On the seasonality of the Hadley Cell / J. Atmos. Sci 60 : 1522 ~ 1526
4. [학술지(정기간행물)] - Held, I. M / 2006 / Robust responses of the hydrological cycle to global warming / J. Climate 19 : 5686 ~ 2699
5. [학술지(정기간행물)] - Hu, Y / 1979 / Observed poleward expansion of the Hadley circulation since 1979. Atmos / Chem. Phys. Discuss 7 : 9367 ~ 9384
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UCI(KEPA) : I410-ECN-0101-2014-453-001256702