气候变化领域集成服务门户(CCPortal): Mechanism for the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability under global warming

CCPortal

DOI	10.1175/JCLI-D-20-0885.1
	Mechanism for the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability under global warming
	Zhang J.; Huang P.; Liu F.; Zhou S.
发表日期	2021
ISSN	08948755
起始页码	4495
结束页码	4504
卷号	34 期号:11
英文摘要	This study investigates what forms the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability—represented by the two most important variables, precipitation (DP0) and circulation (Dv0)—under global warming, based on 24 models from the phase 5 of the Coupled Model Intercomparison Project (CMIP5). Diagnostic analyses reveal that the moisture budget and thermodynamic energy equations related to the DP0 and Dv0 proposed separately in previous studies are simultaneously tenable. As a result, we investigate the mechanism for the spatial pattern of Dv0 from the perspective of the moist static energy (MSE) balance mainly considering the positive contribution from vertical advection. Therefore, based on the simplified MSE balance, the spatial pattern of Dv0 can be approximately projected based on three factors: background circulation variability v0, the vertical gradient of mean-state MSE M, and its future change DM. Under global warming, the middle-level vertical gradient of MSE increases slightly over the Indian Ocean and the Maritime Continent and decreases over the equatorial Pacific where the increase in sea surface temperature (SST) exceeds the tropical mean. The vertical gradient of mean-state MSE is modified by the increase in vertical gradients of moisture and dry static energy (DSE) simultaneously. In short, the change in the vertical gradient of mean-state MSE under global warming can influence the moisture budget and thermodynamic energy balances, resulting in the spatial pattern of DP0 and Dv0 at intraseasonal and interannual time scales consequently, mainly determined by the lower boundary moisture condition in the response of the SST change pattern. © 2021 American Meteorological Society.
英文关键词	Climate change; Climate models; Interannual variability; Intraseasonal variability
语种	英语
scopus关键词	Budget control; Global warming; Moisture; Surface waters; Tropics; Coupled Model Intercomparison Project; Diagnostic analysis; Interannual time scale; Interannual variability; Moist static energy; Moisture conditions; Sea surface temperature (SST); Thermodynamic energy; Oceanography
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178542
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Earth System Modeling Center, Climate Dynamics Research Center, Nanjing University of Information Science and Technology, Nanjing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Chinese Academy of Sciences, Beijing, China; School of Atmospheric Sciences, Sun Yat-Sen University, Guangzhou, China; Key Laboratory of Tropical Atmosphere–Ocean System Ministry of Education, Zhuhai, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China
推荐引用方式 GB/T 7714	Zhang J.,Huang P.,Liu F.,et al. Mechanism for the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability under global warming[J],2021,34(11).
APA	Zhang J.,Huang P.,Liu F.,&Zhou S..(2021).Mechanism for the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability under global warming.Journal of Climate,34(11).
MLA	Zhang J.,et al."Mechanism for the spatial pattern of the amplitude changes in tropical intraseasonal and interannual variability under global warming".Journal of Climate 34.11(2021).