Weakened Subtropical Westerlies Reduced Early Spring Precipitation in the Southeast Tibetan Plateau
文献类型：期刊论文
| 作者 | Yuan, Xu1; Yang, Kun1,2; Lu, Hui1; Sun, Jing1; Wang, Yan; Liu, Yubo3,4; Tang, Qiuhong4 |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 36期号:`13页码:4363-4373 |
| ISSN号 | 0894-8755 |
| 关键词 | Atmosphere Water resources Atmospheric circulation Snow cover Decadal variability Spring season |
| DOI | 10.1175/JCLI-D-22-0770.1 |
| 通讯作者 | Yang, Kun(yangk@tsinghua.edu.cn) |
| 英文摘要 | The Southeast Tibetan Plateau (SETP) is a major region where many low-latitude glaciers are located, with spring precipitation being a major input of the glacier mass balance. This study shows that early spring precipitation has de-creased significantly since 1999, which is attributed to declined moisture contribution from the far -field sources (west of 70 degrees E) induced by the weakened subtropical westerlies. The possible physical mechanism underlying this change has also been revealed. It is found that snow-cover extent (SCE) in March reduced in midlatitude Eurasia after 1999; meanwhile, strong solar radiation during this month may have exacerbated snow melting through snow albedo-radiation interactions. These two processes led to warming and caused a strong anticyclone over midlatitude Eurasia that weakened the subtropi-cal westerlies near 30 degrees N. This decadal change in the subtropical westerlies led to a decrease in moisture transport upstream. As a result, the windward slopes of large terrain along the latitudinal belt near 30 degrees N received less precipitation, and the de-crease in SETP precipitation was part of this change. A further analysis shows that the positive correlation between the westerlies and precipitation has weakened since 1999. |
| WOS关键词 | SNOW COVER VARIABILITY ; MOISTURE SOURCE ; INDIAN MONSOON ; MASS-BALANCE ; ONSET ; SEASONALITY ; MECHANISMS ; RAINFALL ; GLACIERS ; NORTHERN |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA2006010201] ; National Science Foundation of China[41905087] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:001009547100001 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/194877]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Kun |
| 作者单位 | 1.Tsinghua Univ, Inst Global Change Studies, Dept Earth Syst Sci, Minist Educ,Key Lab Earth Syst Modeling, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Natl Tibetan Plateau Data Ctr, State Key Lab Tibetan Plateau Earth Syst Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Xu,Yang, Kun,Lu, Hui,et al. Weakened Subtropical Westerlies Reduced Early Spring Precipitation in the Southeast Tibetan Plateau[J]. JOURNAL OF CLIMATE,2023,36(`13):4363-4373. |
| APA | Yuan, Xu.,Yang, Kun.,Lu, Hui.,Sun, Jing.,Wang, Yan.,...&Tang, Qiuhong.(2023).Weakened Subtropical Westerlies Reduced Early Spring Precipitation in the Southeast Tibetan Plateau.JOURNAL OF CLIMATE,36(`13),4363-4373. |
| MLA | Yuan, Xu,et al."Weakened Subtropical Westerlies Reduced Early Spring Precipitation in the Southeast Tibetan Plateau".JOURNAL OF CLIMATE 36.`13(2023):4363-4373. |
入库方式： OAI收割
来源：地理科学与资源研究所
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