气候变化领域集成服务门户(CCPortal): Mechanisms of tropical precipitation biases in climate models

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DOI	10.1007/s00382-020-05325-z
	Mechanisms of tropical precipitation biases in climate models
	Kim H.; Kang S.M.; Takahashi K.; Donohoe A.; Pendergrass A.G.
发表日期	2020
ISSN	0930-7575
英文摘要	We investigate the possible causes for inter-model spread in tropical zonal-mean precipitation pattern, which is divided into hemispherically symmetric and anti-symmetric modes via empirical orthogonal function analysis. The symmetric pattern characterizes the leading mode and is tightly related to the seasonal amplitude of maximum precipitation position. The energetic constraints link the symmetric pattern to the seasonal amplitude in cross-equatorial atmospheric energy transport AET and the annual-mean equatorial net energy input NEI. Decomposition of AET into the energetics variables indicates that the inter-model spread in symmetric precipitation pattern is correlated with the inter-model spread in clear-sky atmospheric shortwave absorption, which most likely arises due to differences in radiative transfer parameterizations rather than water vapor patterns. Among the components that consist NEI , the inter-model spread in symmetric precipitation pattern is mostly associated with the inter-model spread in net surface energy flux in the equatorial region, which is modulated by the strength of cooling by equatorial upwelling. Our results provide clues to understand the mechanism of tropical precipitation bias, thereby providing guidance for model improvements. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Atmospheric shortwave absorption; Cold tongue bias; Double ITCZ problem; Energetic constraints; Model uncertainty; Tropical precipitation
语种	英语
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145674
作者单位	School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Ulsan, 689-798, South Korea; Servicio Nacional de Meteorología e Hidrología del Perú (SENAMHI), Lima, Peru; Applied Physics Laboratory, University of Washington, Seattle, WA, United States; National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Kim H.,Kang S.M.,Takahashi K.,et al. Mechanisms of tropical precipitation biases in climate models[J],2020.
APA	Kim H.,Kang S.M.,Takahashi K.,Donohoe A.,&Pendergrass A.G..(2020).Mechanisms of tropical precipitation biases in climate models.Climate Dynamics.
MLA	Kim H.,et al."Mechanisms of tropical precipitation biases in climate models".Climate Dynamics (2020).