气候变化领域集成服务门户(CCPortal): Impacts of the stochastic multicloud parameterization on the simulation of Western North Pacific summer rainfall

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DOI	10.1016/j.atmosres.2020.105067
	Impacts of the stochastic multicloud parameterization on the simulation of Western North Pacific summer rainfall
	Ma L.; Yang S.
发表日期	2020
ISSN	0169-8095
卷号	244
英文摘要	This study investigated the sensitivity of the western North Pacific (WNP) summer precipitation to the convection schemes and discussed the associated dynamical processes. Two convection schemes were compared: one is the default mass-flux convection scheme used in the state-of-the-art ECHAM6.3 atmosphere model and the other incorporates the Stochastic Multicloud Model (SMCM) into ECHAM6.3. Incorporation of the SMCM reduces the bias of cloud cover and shortwave and longwave radiation by regulating the shortwave and longwave cloud radiative forcing over the WNP. Compared to the default model, the modified model with the SMCM alleviates the dry bias in the WNP, which is associated with enhanced ascending motion. The moist static energy balance revealed that improved simulation of precipitation in the modified model is contributed by enhanced horizontal advection of moist enthalpy and increased net energy in the atmosphere, which is attributed to increased total cloud cover, over the WNP. Additionally, intensified latent energy advection over the WNP dominates enhanced horizontal advection of moist enthalpy in the modified model. On the other hand, the moisture budget analysis of the WNP demonstrated that strengthened convergence of moisture flux in the modified model plays the most influential role in reducing precipitation bias. Further analysis unraveled that enhanced zonal-mean moisture transported by the stationary eddy zonal flow convergence in the WNP dominates intensified zonal moisture convergence, thus increased horizontal convergence of moist flux in the modified model. © 2020
英文关键词	ECHAM6.3 atmosphere model; Moist static energy balance; Moisture budget analysis; The Stochastic Multicloud Model; The western North Pacific precipitation
语种	英语
scopus关键词	Advection; Atmospheric radiation; Budget control; Enthalpy; Moisture; Rain; Stochastic systems; Atmosphere modeling; Cloud radiative forcing; Horizontal advection; Long-wave radiation; Moist static energy; Moisture convergence; Summer precipitation; Western North Pacific; Stochastic models; atmospheric modeling; cloud cover; cloud microphysics; cloud radiative forcing; computer simulation; convective system; longwave radiation; moisture transfer; numerical model; parameterization; precipitation (climatology); rainfall; shortwave radiation; stochasticity; summer; Pacific Ocean; Pacific Ocean (North)
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141854
作者单位	State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environmental Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Ma L.,Yang S.. Impacts of the stochastic multicloud parameterization on the simulation of Western North Pacific summer rainfall[J],2020,244.
APA	Ma L.,&Yang S..(2020).Impacts of the stochastic multicloud parameterization on the simulation of Western North Pacific summer rainfall.Atmospheric Research,244.
MLA	Ma L.,et al."Impacts of the stochastic multicloud parameterization on the simulation of Western North Pacific summer rainfall".Atmospheric Research 244(2020).