亚洲季风变迁与全球气候的联系
Asian monsoon change and its links to global climate
查看参考文献16篇
文摘
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通过研究冰期-间冰期至百年尺度亚洲季风的演变特征,阐明了季风变化同南北半球冰量、太阳辐射、大洋环流、热带辐合带等气候系统内外部因子的动力联系。在海-陆-气相互作用的框架下提出了“冰期-间冰期印度季风变化动力学”新理论,揭示大西洋经向环流对东亚季风突变事件的影响和动力过程,探讨了全新世亚洲季风变化的时空特征和控制因素。该项成果以亚洲季风变迁历史和机理为主线,从地球系统科学的视角,将亚洲古季风研究拓展为多尺度与多动力因子、区域与全球相结合的集成研究,推动了与季风相关的过去全球变化科学的发展。 |
其他语种文摘
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As an integral part of the global climate system, the Asian monsoon has played a key role in linking climatic changes between high-and low-latitude regions. Monsoon-induced precipitation changes have significant impacts on the living environment in densely populated East Asia, especially in the context of global warming. Thus, investigating natural variability and dynamics of the Asian monsoon is essential for promoting a sustainable global future, because the monsoon-related hydrological cycle plays a critical role in global ecological and social systems. This project focuses on past monsoon variability and its dynamical links to global climate, and attempts to provide a natural analog for the current interglacial climate and a scientific basis for future climate projections. The major findings are as follows: By investigating Chinese loess, speleothem, lake and peat deposits, the research team employed multiple proxies to reconstruct Indian and East Asian monsoon variability on glacial-interglacial to centennial timescales. The team generated a high-resolution continental record of the Indian monsoon variability spanning the last 2.6 Ma from a paleolake in southwestern China; demonstrated the high degree of similarity between abrupt temperature-wind-precipitation changes during the last glaciation between high-and middle-latitudes; and produced a synthesis of speleothem-lake-peat records in order to address the spatiotemporal variability of the Holocene summer monsoon. Through integration of various proxies and model results, the team addressed the importance of interhemispheric forcing in driving Indian summer monsoon variability on glacialinterglacial timescales; confirmed the influence of Atlantic meridional overturning circulation (AMOC) on abrupt monsoon changes; and deciphered the asynchronous nature and drivers of the weakening of the Holocene monsoon. These findings demonstrate that multiscale monsoon variability is dynamically linked to external (Solar insolation and outputs) and internal (e.g., Antarctic temperature, Ice volume, AMOC) factors. Based upon integrated understanding of regional and global climate changes, the research team expanded past research on monsoon variability and dynamics to produce a new perspective on earth system science, as well as thoroughly considering the interplay among different timescales and various forcing factors. These results were published in high profile journals such as Science, Nature Geoscience, Geology, and Earth and Planetary Science Letters. Twenty major publications were cited more than 500 times by paleoclimate and modeling communities. In particular, a new theory on “Glacial-interglacial Indian Summer monsoon dynamics” was regarded as a challenge to traditional views of Indian monsoon dynamics and was listed among the “Top Ten Scientific Progress of China” and the “Ten Geological Science and Technology Progress of the Geological Society of China” in 2011. This work won a Second Class National Natural Science Awardwas award in 2016. |
来源
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地球环境学报
,2017,8(1):1-5 【扩展库】
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DOI
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10.7515/JEE201701001
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关键词
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半球冰量
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太阳辐射
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大洋环流
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地址
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1.
中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 西安, 710061
2.
中国科学院南京地理与湖泊研究所, 南京, 210008
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1674-9901 |
学科
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大气科学(气象学) |
文献收藏号
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CSCD:5954614
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