Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031384 |
Impacts of ENSO and IOD on Snow Depth Over the Tibetan Plateau: Roles of Convections Over the Western North Pacific and Indian Ocean | |
Jiang, Xingwen1; Zhang, Tuantuan2; Tam, Chi-Yung3; Chen, Junwen2; Lau, Ngar-Cheung2,4; Yang, Song5,6,7; Wang, Zunya8 | |
2019-11-26 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:11961-11975 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | There is a consensus that snow over the Tibetan Plateau (TP) modulates the regional climate significantly. Possible causes for the interannual variability of snow over the TP, however, are under debate, especially regarding the independent roles of El Nino-Southern Oscillation (ENSO) and Indian Ocean dipole (IOD). Based on in situ observational data analyses and model simulations, our study shows that impacts of ENSO and IOD on snow depth (SD) over the TP are different during early winter. In particular, ENSO mostly affects SD over the eastern TP, while IOD affects SD over the central western TP. Both above-normal snowfall and cold temperature anomaly contribute to deeper-than-normal SD, with the former playing a more important role. Diabatic cooling of the suppressed convection over the western North Pacific that related to the positive phase of ENSO could excite an anomalous cyclonic circulation and strong cold temperature anomalies over the eastern TP. There is an enhanced moisture transported over the eastern TP from the tropics due to the anomalous cyclonic circulation, along with strong cold temperature anomalies, resulting in above-normal snowfall in the eastern TP. On the other hand, anomalous convection over the western Indian Ocean related to the positive IOD could generate a wave train propagating northeastward and induce an anomalous cyclonic circulation over the central western TP. The associated anomalous circulation transports extra moisture from the tropics to the central western TP, providing conditions favorable for more snowfall over the central western TP. Opposite conditions tend to occur during negative phases of ENSO and IOD. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498554700001 |
WOS关键词 | ASIAN SUMMER MONSOON ; INTERANNUAL VARIATION ; WINTER SNOW ; COVER ; RAINFALL ; CLIMATE ; TELECONNECTION ; PRECIPITATION ; VARIABILITY ; CIRCULATION |
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/225811 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.China Meteorol Adm, Inst Plateau Meteorol, Chengdu, Sichuan, Peoples R China; 2.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong, Peoples R China; 3.Chinese Univ Hong Kong, Earth Syst Sci Programme, Hong Kong, Peoples R China; 4.Chinese Univ Hong Kong, Dept Geog & Resource Management, Hong Kong, Peoples R China; 5.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 6.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 7.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China; 8.China Meteorol Adm, Natl Climate Ctr, Lab Climate Studies, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Xingwen,Zhang, Tuantuan,Tam, Chi-Yung,et al. Impacts of ENSO and IOD on Snow Depth Over the Tibetan Plateau: Roles of Convections Over the Western North Pacific and Indian Ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):11961-11975. |
APA | Jiang, Xingwen.,Zhang, Tuantuan.,Tam, Chi-Yung.,Chen, Junwen.,Lau, Ngar-Cheung.,...&Wang, Zunya.(2019).Impacts of ENSO and IOD on Snow Depth Over the Tibetan Plateau: Roles of Convections Over the Western North Pacific and Indian Ocean.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),11961-11975. |
MLA | Jiang, Xingwen,et al."Impacts of ENSO and IOD on Snow Depth Over the Tibetan Plateau: Roles of Convections Over the Western North Pacific and Indian Ocean".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):11961-11975. |
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