Mesoscale SST perturbation-induced impacts on climatological precipitation in the Kuroshio-Oyashio extension region, as revealed by the WRF simulations

doi:10.1007/s00343-019-8065-5

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Mesoscale SST perturbation-induced impacts on climatological precipitation in the Kuroshio-Oyashio extension region, as revealed by the WRF simulations
	Gao Jiaxiang 1,2; Zhang Rong-Hua1,2,3 ; Wang Hongna 1,3
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2019-03-01
卷号	37 期号:2 页码:385-397
关键词	mesoscale SST perturbations and effects WRF model Kuroshio-Oyashio Extension climatological precipitation
ISSN号	2096-5508
DOI	10.1007/s00343-019-8065-5
通讯作者	Zhang Rong-Hua(rzhang@qdio.ac.cn)
英文摘要	Mesoscale coupling between perturbations of mesoscale sea surface temperature (SST) and lowlevel winds has been extensively studied using available high-resolution satellite observations. However, the climatological impacts of mesoscale SST perturbations (SSTmeso ) on the free atmosphere have not been fully understood. In this study, the rectified effect of SSTmeso on local climatological precipitation in the Kuroshio-Oyashio Extension (KOE) region is investigated using the Weather Research and Forecasting (WRF) Model; two runs are performed, one forced by low-resolution SST fields (almost no mesoscale signals) and another by additional high-resolution SSTmeso fields extracted from satellite observations. Climatological precipitation response to SSTmeso is characterized mainly by enhanced precipitation on the warmer flank of three oceanic SST fronts in this region. The results show that the positive correlation between the 10-m wind speed perturbations and SSTmeso is well captured by the WRF model with a reasonable spatial pattern but relatively weak strength. The addition of SSTmeso improves the climatological precipitation simulated by WRF with a better representation of fine-scale structures compared with satellite observations. A closer examination on the underlying mechanism suggests that while the pressure adjustment mechanism can explain the climatological precipitation enhancement along the fronts and the relatively high contribution of the convective precipitation, other factors such as synoptic events should also be taken into consideration to account for the seasonality of the precipitation response.
资助项目	National Key Research and Development Program of China[2017YFC1404102] ; National Key Research and Development Program of China[2017YFC1404100] ; National Natural Science Foundation of China[41490644] ; National Natural Science Foundation of China[41490640] ; Chinese Academy of Sciences Strategic Priority Project ; Western Pacific Ocean System[XDA11010105] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406402] ; Taishan Scholarship ; Recruitment Program of Global Experts
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000464895600002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/161158]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Zhang Rong-Hua
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean Dynam & Climate, Qingdao 266237, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Gao Jiaxiang,Zhang Rong-Hua,Wang Hongna. Mesoscale SST perturbation-induced impacts on climatological precipitation in the Kuroshio-Oyashio extension region, as revealed by the WRF simulations[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(2):385-397.
APA	Gao Jiaxiang,Zhang Rong-Hua,&Wang Hongna.(2019).Mesoscale SST perturbation-induced impacts on climatological precipitation in the Kuroshio-Oyashio extension region, as revealed by the WRF simulations.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(2),385-397.
MLA	Gao Jiaxiang,et al."Mesoscale SST perturbation-induced impacts on climatological precipitation in the Kuroshio-Oyashio extension region, as revealed by the WRF simulations".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.2(2019):385-397.