气候变化领域集成服务门户(CCPortal): Strengthened relationship between tropical west pacific and midsummer precipitation over northeast China after the Mid-1990s

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DOI	10.1175/JCLI-D-19-0957.1
	Strengthened relationship between tropical west pacific and midsummer precipitation over northeast China after the Mid-1990s
	Tingting H.A.N.; Zhang M.; Zhou B.; Xin H.A.O.; Shangfeng L.I.
发表日期	2020
ISSN	0894-8755
起始页码	6833
结束页码	6848
卷号	33 期号:16
英文摘要	The relationship between the tropical west Pacific (TWP) and East Asian summer monsoon/precipitation has been documented in previous studies. However, the stability for the signals of midsummer precipitation in the TWP sea surface temperature (SST_TWP), which is important for climate variation, has drawn little attention. This study identifies a strengthened relationship between the leading empirical orthogonal function mode (EOF1) of midsummer precipitation over Northeast China (NEC) and the SST_TWP after the mid-1990s. The EOF1 mode shows a significant positive correlation with the SST_TWP for 1996-2016, whereas the relationship is statistically insignificant for 1961-90. Further results indicate that the North Pacific multidecadal oscillation (NPMO) shifts to a positive phase after the 1990s. In the positive NPMO phase, the anomalous circulation over the northeast Pacific expands westward over the central North Pacific-Aleutian Islands region. Concurrently, the SST_TWP-associated wavelike pattern propagates northeastward from the west Pacific to the northwest Pacific and farther to the North Pacific, facilitating the poleward expansion and intensification of the SST_TWP-related circulation anomalies over the North Pacific. Therefore, the SST_ TWP has an enhanced influence on NEC precipitation through the modulation of the circulation anomalies over the central North Pacific-Aleutian Islands region after the mid-1990s. Additionally, the tropical anticyclone/cyclone associated with the SST_TWP expands westward to South China, exerting an intensified impact on meridional wind anomalies along eastern China and on moisture transport over NEC. These conditions jointly contribute to the strengthened relationship between the SST_TWP and the EOF1 mode of NEC midsummer precipitation after the mid-1990s. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Oceanography; Orthogonal functions; Surface waters; Circulation anomalies; Climate variation; East Asian summer monsoon; Empirical Orthogonal Function; Meridional winds; Moisture transport; Positive correlations; Sea surface temperature (SST); Tropics; climate variation; empirical orthogonal function analysis; moisture transfer; monsoon; precipitation (climatology); sea surface temperature; summer; tropical cyclone; wave propagation; China
语种	英语
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/171169
作者单位	Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of MeteorologicalDisaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Marine and Atmospheric Sciences, Stony Brook University, State University of New York, Stony Brook, New York, NY, United States; International Center for Climate and Environmental Sciences, IAP, Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Jilin Provincial Key Laboratory of Changbai Mountain Meteorology and Climate Change, Laboratory of Research for Middle-High Latitude Circulation Systems and East Asian Monsoon, Institute of Mete...
推荐引用方式 GB/T 7714	Tingting H.A.N.,Zhang M.,Zhou B.,et al. Strengthened relationship between tropical west pacific and midsummer precipitation over northeast China after the Mid-1990s[J],2020,33(16).
APA	Tingting H.A.N.,Zhang M.,Zhou B.,Xin H.A.O.,&Shangfeng L.I..(2020).Strengthened relationship between tropical west pacific and midsummer precipitation over northeast China after the Mid-1990s.Journal of Climate,33(16).
MLA	Tingting H.A.N.,et al."Strengthened relationship between tropical west pacific and midsummer precipitation over northeast China after the Mid-1990s".Journal of Climate 33.16(2020).