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DOI | 10.1002/joc.5703 |
Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature | |
Yin, Xiaoxue1,2; Zhou, Lian-Tong1 | |
2018-11-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:13页码:4860-4874 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The dominant modes wintertime precipitation in northwest China (NWC) and the possible causes are investigated during the period 1961-2013 in the inter-annual timescale, as winter climate condition could greatly affect local economic development and people's lives. The analysis of this study is divided into three parts. First, the spatiotemporal variability of dominant modes wintertime precipitation is described by an empirical orthogonal function (EOF) method. The atmospheric circulation anomalies associated with wintertime precipitation variations are then discussed through regression and composite analysis. Third, the relationships between wintertime precipitation and sea surface temperature (SST) anomalies are investigated. The results indicate that the leading mode (EOF1) shows a uniform sign in the entire region, and the second mode (EOF2) exhibits a zonal-dipole pattern; they account for 25.6 and 15.7% of the total variance, respectively. The atmospheric circulation anomalies EOF1 closely related to is the Eurasian (EU) teleconnection pattern. Years when a negative phase of EU pattern occurs tend to be rainy with anomalous southerly transporting water vapour from low-latitudes and profound ascending motion anomalies. Atmospheric circulation anomalies associated with the second mode resemble the Arctic Oscillation (AO) pattern. AO pattern influences EOF2 precipitation variations through the anomalous circulations over Mongolia and western Europe. The sea surface temperature (SST) anomalies related to EOF1 show an El Nino-Southern Oscillation (ENSO) like pattern, which may modulate the wintertime precipitation mode through the western North Pacific anticyclone. The EOF2 mode has a close relationship with a tripole SST anomaly mode in the North Atlantic Ocean. This SST pattern is likely to influence wintertime precipitation by modulating the North Atlantic Oscillation (NAO). The results of this study could be beneficial for wintertime precipitation prediction and the decrease of economic losses in NWC and may also provide useful references for other areas with similar climatic features such as the central Asia. |
英文关键词 | AO teleconnection pattern belt and road initiative EU teleconnection pattern northwest China sea surface temperature wintertime precipitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450222100013 |
WOS关键词 | EL-NINO ; ATLANTIC OSCILLATION ; SOUTHERN CHINA ; HEAT-FLUX ; ENSO ; MONSOON ; SUMMER ; IMPACT ; TELECONNECTION ; CLIMATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36625 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, POB 2718, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Yin, Xiaoxue,Zhou, Lian-Tong. Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(13):4860-4874. |
APA | Yin, Xiaoxue,&Zhou, Lian-Tong.(2018).Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(13),4860-4874. |
MLA | Yin, Xiaoxue,et al."Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.13(2018):4860-4874. |
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