Статья

Variation of East Asian monsoon precipitation during the past 21 k.y. and potential CO2 forcing

Huayu LuDepartment of Geography, University of Wisconsin, Madison, Wisconsin 53706, USAShuang YiSchool of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, ChinaZhengyu LiuCenter for Climatic Research, University of Wisconsin, Madison, Wisconsin 53706, USAJoseph A. MasonDepartment of Geography, University of Wisconsin, Madison, Wisconsin 53706, USADaqing JiangInstitute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaJun ChengNanjing University of Information Science and Technology, Nanjing 210044, ChinaThomas StevensDepartment of Geography, University of London, Egham, Surrey TW20 0EX, UKZhiwei XuSchool of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, ChinaEnlou ZhangState Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, ChinaLiya JinKey Laboratory of Western China’s Environment, Lanzhou University, Lanzhou 730000, ChinaZhaohui ZhangSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, ChinaZhengtang GuoInstitute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaYi WangDepartment of Geography, University of Sussex, Brighton BN1 9QJ, UKBette L. Otto‐BliesnerNational Center for Atmospheric Research, Boulder, Colorado 80307-3000, USA

2013en

ABI

Аннотация

Paleoclimatic research can provide critical insight on causes of change in the East Asian monsoon, which influences the lives of 1.6 billion people today. In this study, we use paleo-climatic indexes from Chinese loess deposits, which have clear climatic implications and are independently dated, to reconstruct the monsoon precipitation since 21 ka. Our results show that monsoon precipitation persistently decreased from 21 ka to ca. 8 ka, and increased after ca. 8 ka, with a precipitation peak at 8-3 ka. These changes in East Asian summer monsoon precipitation are synchronous with changes in high-northern-latitude ice volume/ice cover and atmospheric CO2. These new data suggest that variation of the monsoon precipitation was probably driven by CO2-forced high-northern-latitude temperature changes, shifting the location of the intertropical convergence zone that dominates monsoon precipitation. Our TraCE-21000 modeling experiment supports this interpretation.

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Идентификаторы

DOI: 10.1130/g34488.1

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar