气候变化领域集成服务门户(CCPortal): Impacts of Saharan Mineral Dust on Air-Sea Interaction over North Atlantic Ocean Using a Fully Coupled Regional Model

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DOI	10.1029/2020JD033586
	Impacts of Saharan Mineral Dust on Air-Sea Interaction over North Atlantic Ocean Using a Fully Coupled Regional Model
	Chen S.-H.; Huang C.-C.; Kuo Y.-C.; Tseng Y.-H.; Gu Y.; Earl K.; Chen C.-Y.; Choi Y.; Liou K.-N.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	This study examines the modifications of air-sea coupling processes by dust-radiation-cloud interactions over the North Atlantic Ocean using a high-resolution coupled atmosphere-wave-ocean-dust (AWOD) regional model. The dust-induced mechanisms that are responsible for changes of sea surface temperature (SST) and latent and sensible heat fluxes (LHF/SHF) are also examined. Two 3-month numerical experiments are conducted, and they differ only in the activation and deactivation of dust-radiation-cloud interactions. Model results show that the dust significantly reduces surface downward radiation fluxes (SDRF) over the ocean with the maximum change of 20–30 W m−2. Over the dust plume region, the dust effect creates a low-pressure anomaly and a cyclonic circulation anomaly, which drives a positive wind stress curl anomaly, thereby reducing sea surface height and mixed layer depth. However, the SST change by dust, ranging from −0.5 to 0.5 K, has a great spatial variation which differs from the dust plume shape. Dust cools SST around the West African coast, except under the maximum dust plume ridge, and extends westward asymmetrically along the northern and southern edges of the dust plume. Dust unexpectedly warms SST over a large area of the western tropical North Atlantic and north of the dust plume. These SST changes are controlled by different mechanisms. Unlike the SST change pattern, the LHF and SHF changes are mostly reduced underneath the dust plume region, though they are different in detail due to different dominant factors, and increased south of the dust plume over the tropic. © 2021. The Authors.
英文关键词	African dust; air-sea interaction; COAWST; dust-cloud-radiation interaction; mixed layer depth; sea surface temperature; surface heat fluxes; wind stress curl
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185482
作者单位	Department of Land, Air, and Water Resources, University of California, DavisCA, United States; Institute of Oceanography, National Taiwan University, Taipei, Taiwan; Joint Institute for Regional Earth System Science and Engineering and Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan; Korea Polar Research Institute, Incheon, South Korea
推荐引用方式 GB/T 7714	Chen S.-H.,Huang C.-C.,Kuo Y.-C.,et al. Impacts of Saharan Mineral Dust on Air-Sea Interaction over North Atlantic Ocean Using a Fully Coupled Regional Model[J],2021,126(4).
APA	Chen S.-H..,Huang C.-C..,Kuo Y.-C..,Tseng Y.-H..,Gu Y..,...&Liou K.-N..(2021).Impacts of Saharan Mineral Dust on Air-Sea Interaction over North Atlantic Ocean Using a Fully Coupled Regional Model.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Chen S.-H.,et al."Impacts of Saharan Mineral Dust on Air-Sea Interaction over North Atlantic Ocean Using a Fully Coupled Regional Model".Journal of Geophysical Research: Atmospheres 126.4(2021).