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DOI | 10.1007/s11434-013-5970-4 |
Interannual precipitation variations in the mid-latitude Asia and their association with large-scale atmospheric circulation | |
Huang Wei; Chen FaHu; Feng Song; Chen JianHui; Zhang XiaoJian | |
发表日期 | 2013 |
ISSN | 1001-6538 |
卷号 | 58期号:32页码:3962-3968 |
英文摘要 | This study analyzed the spatial differences of the precipitation variations in the mid-latitude Asia and their possible physical mechanisms during 1960-2009. The annual precipitation showed an opposite variations between the westerlies-dominated arid Central Asia (ACA) and monsoon-dominated North China (NC) during the study period. Given the different contributions of seasonal precipitation to annual total precipitation in ACA and NC, the atmospheric circulation anomalies during the major precipitation seasons (winter in ACA/summer in NC) were analyzed. In winter, negative North Atlantic Oscillation may cause negative height anomalies over the north side and positive anomalies over the south side of the ACA. Together, the enhanced pressure gradient and anomalous westerly wind brings more water vapor to ACA, and leaves less precipitation in NC. In summer, the low-pressure anomalies in Northeast China, along with a weaker summer monsoon and negative height anomalies in Eastern Europe together contribute to reduced (excessive) summer precipitation in NC (ACA). The interactions between ENSO and NAO may result in the opposite precipitation variations between ACA and NC. A significant 2-3-year cycle is identified in ACA, which is linked to the variations of westerly circulation in the middle troposphere. |
英文关键词 | mid-latitude Asia;interannual precipitation variations;westerlies-dominated climate regime;regional westerly indexes;Troposphere Biennial Oscillation (TBO) |
语种 | 英语 |
WOS研究方向 | Science & Technology - Other Topics |
WOS类目 | Multidisciplinary Sciences |
WOS记录号 | WOS:000326827900011 |
来源期刊 | CHINESE SCIENCE BULLETIN |
来源机构 | 兰州大学 ; 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/1977 |
推荐引用方式 GB/T 7714 | Huang Wei,Chen FaHu,Feng Song,et al. Interannual precipitation variations in the mid-latitude Asia and their association with large-scale atmospheric circulation[J]. 兰州大学, 中国科学院青藏高原研究所,2013,58(32):3962-3968. |
APA | Huang Wei,Chen FaHu,Feng Song,Chen JianHui,&Zhang XiaoJian.(2013).Interannual precipitation variations in the mid-latitude Asia and their association with large-scale atmospheric circulation.CHINESE SCIENCE BULLETIN,58(32),3962-3968. |
MLA | Huang Wei,et al."Interannual precipitation variations in the mid-latitude Asia and their association with large-scale atmospheric circulation".CHINESE SCIENCE BULLETIN 58.32(2013):3962-3968. |
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