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DOI | 10.1029/2018JD029271 |
Prolonged Heavy Snowfall During the Younger Dryas | |
Wang, L.1; Jiang, W. Y.1; Jiang, D. B.2,3,4; Zou, Y. F.1,4; Liu, Y. Y.5; Zhang, E. L.6; Hao, Q. Z.1,4; Zhang, D. G.7; Zhang, D. T.8; Peng, Z. Y.9; Xu, B.1,4; Yang, X. D.6; Lu, H. Y.1,4,10 | |
2018-12-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:24页码:13748-13762 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Snowfall is an important component of Earth's climate system; however, long, continuous high-resolution records of global snowfall are lacking because of the absence of suitable proxies. In this study, diatom record from the sediments of Yunlong Lake, in the southeastern Tibetan Plateau, was used to reconstruct snowfall during the Younger Dryas (YD). Variations in the abundance of low-light-tolerant diatoms and diatom flux indicate that the duration of lake ice cover during the YD was significantly longer than that during the colder Heinrich event 1; this suggests that heavy snowfall, rather than temperatures, was responsible for the greater duration of lake ice cover during the YD. Thus, we conclude that prolonged, heavy snowfall occurred in the southeastern Tibetan Plateau during the YD. In addition, this conclusion is supported by the results of a climate model simulation that also suggest that heavy snowfall occurred at high latitude in the Northern Hemisphere during the YD. We propose that the heavy snowfall intensified cooling in Northern Hemisphere by increasing the albedo and that it increased hydrological variability at low latitudes by increasing the duration of the southward migration of the Intertropical Convergence Zone and by delaying the onset of the Asian summer monsoon. The snowfall would have been a source of continuous freshwater that acted as a positive feedback and resulted in a prolonged weakened state of the Atlantic meridional overturning circulation, which lasted for more than 1,000years. Overall, our results emphasize the amplification and positive feedback function of heavy snowfall in triggering abrupt climate change. |
英文关键词 | Younger Dryas Heavy snowfall Diatoms AMOC ITCZ Asian summer monsoon |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000455876300008 |
WOS关键词 | INDIAN-SUMMER MONSOON ; INTERTROPICAL CONVERGENCE ZONE ; ASIAN WINTER MONSOON ; LAST GLACIAL MAXIMUM ; THERMOHALINE CIRCULATION ; HIGH-RESOLUTION ; OVERTURNING CIRCULATION ; OCEAN CIRCULATION ; TIBETAN PLATEAU ; 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/32048 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China; 3.Chinese Acad Sci, Climate Change Res Ctr, Beijing, Peoples R China; 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China; 5.China Meteorol Adm, Meteorol Observat Ctr, Beijing, Peoples R China; 6.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Jiangsu, Peoples R China; 7.Zhejiang Univ, Sch Earth Sci, Hangzhou, Zhejiang, Peoples R China; 8.China Univ Geosci, Sch Earth & Resources, Beijing, Peoples R China; 9.China Geol Survey, Guangzhou Marine Geol Survey, Guangzhou, Guangdong, Peoples R China; 10.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, L.,Jiang, W. Y.,Jiang, D. B.,et al. Prolonged Heavy Snowfall During the Younger Dryas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(24):13748-13762. |
APA | Wang, L..,Jiang, W. Y..,Jiang, D. B..,Zou, Y. F..,Liu, Y. Y..,...&Lu, H. Y..(2018).Prolonged Heavy Snowfall During the Younger Dryas.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(24),13748-13762. |
MLA | Wang, L.,et al."Prolonged Heavy Snowfall During the Younger Dryas".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.24(2018):13748-13762. |
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