气候变化领域集成服务门户(CCPortal): Impact of air–sea coupling on the simulated global tropical cyclone activity in the high-resolution Community Earth System Model (CESM)

CCPortal

DOI	10.1007/s00382-019-04739-8
	Impact of air–sea coupling on the simulated global tropical cyclone activity in the high-resolution Community Earth System Model (CESM)
	Li H.; Sriver R.L.
发表日期	2019
ISSN	0930-7575
起始页码	3731
结束页码	3750
卷号	53 期号:2020-07-08
英文摘要	Atmosphere–ocean coupling is critical for tropical cyclones (TC) formation and development. TCs derive their energy from the upper ocean, and the associated TC-ocean interactions can in turn modulate storm evolution. This study assesses the impact of ocean coupling on directly-simulated global TC activity in the high-resolution “TC-permitting” Community Earth System Model (CESM). Model-simulated global TC activity is evaluated in a 30-year fully-coupled CESM simulation (CPL), in which the 0.25° atmosphere component is coupled to the nominal 1° dynamic ocean (with ~ 0.27° horizontal grid spacing in the tropics). An atmosphere-only simulation (ATM) is branched from CPL, with sea surface temperature (SST) specified from CPL, which we use to isolate the effect of ocean coupling on TC activity. We find that the two-way ocean coupling can affect global TC frequency, geographical distribution, storm intensity, and interannual variability. ATM on average simulates 27% more major TC events than CPL globally, and the TC power dissipation is higher than CPL poleward of 12° latitude in both hemispheres. The lack of negative SST feedbacks in ATM allows TCs to have a longer intensification period and reach the maximum intensity at a higher latitude. In CPL, TC interannual variability is heavily influenced by El Nino/La Nina events. This relationship can be captured in ATM under strong events but is less predictable during weak and neutral years. Results help to better understand the connections and feedbacks linking air–sea coupling, tropical variability, and the directly simulated TC activity within the high-resolution Earth System Models. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Atmosphere–ocean interactions; Climate variability; Earth system modeling; Ocean coupling; Tropical cyclones
语种	英语
scopus关键词	air-sea interaction; annual variation; atmosphere-ocean coupling; climate feedback; climate modeling; sea surface temperature; tropical cyclone
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/146002
作者单位	Department of Geology and Geophysics, Yale University, New Haven, CT, United States; Department of Atmospheric Sciences, University of Illinois at Urbana Champaign, Urbana, IL, United States
推荐引用方式 GB/T 7714	Li H.,Sriver R.L.. Impact of air–sea coupling on the simulated global tropical cyclone activity in the high-resolution Community Earth System Model (CESM)[J],2019,53(2020-07-08).
APA	Li H.,&Sriver R.L..(2019).Impact of air–sea coupling on the simulated global tropical cyclone activity in the high-resolution Community Earth System Model (CESM).Climate Dynamics,53(2020-07-08).
MLA	Li H.,et al."Impact of air–sea coupling on the simulated global tropical cyclone activity in the high-resolution Community Earth System Model (CESM)".Climate Dynamics 53.2020-07-08(2019).