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DOI | 10.1002/joc.6406 |
Comparison of two severe low-temperature snowstorm and ice freezing events in China: Role of Eurasian mid-high latitude circulation patterns | |
Wang, Zunya1; Ding, Yihui1; Zhou, Botao1,2; Chen, Lijuan1 | |
2019-12-14 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | A severe low-temperature snowstorm and ice freezing event occurred in China in early 2018. This event was similar to that occurred in early 2008 but with a weaker intensity and salient difference in location and extent. The reason for this discrepancy was investigated in this study using station data and atmospheric reanalysis data. The results reveal that two different circulation patterns (i.e., zonal dipole pattern and meridional dipole pattern) over the mid-high latitudes of Eurasia played an important role. The zonal dipole pattern, which is closely related to the 2018 event, is characterized by positive anomalies over the Ural Mountains and negative anomalies over Lake Baikal in the 500 hPa geopotential height field. This pattern can cause intense low temperatures in northern China through its influence on the anomalous cyclone over Northeast Asia. The meridional dipole pattern, which is highly associated with the 2008 event, is characterized by positive anomalies over Siberia and negative anomalies over Asia in the 500 hPa geopotential height field. This pattern corresponds to a strong East Asian winter monsoon (EAWM) and can drive cold air to move further southward, causing nearly nationwide chilly weather, particularly in northwestern China and south of the Yangtze River valley. The two patterns, combined with the strengthened western Pacific subtropical high (WPSH), have a synergistic role in the occurrence of snowfall. However, these patterns have weak correlations with the number of icy days but provide favourable conditions for ice freezing events. |
英文关键词 | Eurasian mid-high latitude dipole pattern ice freezing low temperature snowstorm |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502471100001 |
WOS关键词 | ASIAN WINTER MONSOON ; HEMISPHERE ANNULAR MODE ; ARCTIC SEA-ICE ; ATMOSPHERIC CIRCULATION ; INTERANNUAL VARIABILITY ; GEOPOTENTIAL HEIGHT ; SNOWFALL EVENTS ; ICING EVENTS ; PERSISTENT ; FEATURES |
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/225520 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.China Meteorol Adm, Natl Climate Ctr, Beijing, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change, Minist Educ,Key Lab Meteorol Disaster, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Zunya,Ding, Yihui,Zhou, Botao,et al. Comparison of two severe low-temperature snowstorm and ice freezing events in China: Role of Eurasian mid-high latitude circulation patterns[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Wang, Zunya,Ding, Yihui,Zhou, Botao,&Chen, Lijuan.(2019).Comparison of two severe low-temperature snowstorm and ice freezing events in China: Role of Eurasian mid-high latitude circulation patterns.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Wang, Zunya,et al."Comparison of two severe low-temperature snowstorm and ice freezing events in China: Role of Eurasian mid-high latitude circulation patterns".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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