Linking moisture and near-surface wind with winter temperature to reveal the Holocene climate evolution in arid Xinjiang region of China

作     者：Fuyuan Gao Junhuai Yang Dunsheng Xia Hao Lu Shuyuan Wang Kaiming Li Zhenqian Wang Zhipeng Wu Jiaxin Zhou Fuxi Shi Fuyuan Gao;Junhuai Yang;Dunsheng Xia;Hao Lu;Shuyuan Wang;Kaiming Li;Zhenqian Wang;Zhipeng Wu;Jiaxin Zhou;Fuxi Shi

作者机构：College of Urban EnvironmentLanzhou City UniversityLanzhou 730070China Key Laboratory of Western China’s Environmental Systems(Ministry of Education)College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Key Laboratory of Cenozoic Geology and EnvironmentInstitute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Georges Lemaitre Center for Earth and Climate ResearchEarth and Life InstituteUniersitéCatholique de LouvainLouvain-la-Neuve 1348Belgium Key Laboratory of State Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake WatershedCollege of ForestryJiangxi Agricultural UniversityNanchang 330045China Yulong Snow Mountain Cryosphere and Sustainable Development Field Science Observation and Research StationNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China 

出 版 物：《Geoscience Frontiers》 (地学前缘（英文版）)

年 卷 期：2022年第13卷第6期

页      面：16-29页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0602) the National Natural Science Foundation of China (Grant Nos. 41401046, 42067049) the Education Science and technology Innovation project of Gansu Province (2021QB-118) the Jiangxi Provincial Natural Science Foundation (Grant No. 20202BABL213035) 

主　　题：Holocene climate change Moisture Temperature Near-surface wind strength Siberian high-pressure system Mid-latitude Westerlies 

摘      要：An increasing number of palaeo-climatic records have been reported to identify the Holocene climate history in the arid Xinjiang region of northwest China. However, few studies have fully considered the internal linkages within the regional climate system, which may limit our understanding of the forcing mechanisms of Holocene climate change in this region. Here, we systematically consider three major issues of the moisture/precipitation, temperature and near-surface wind relevant to the Holocene climate history of Xinjiang. First, despite there still has debated for the Holocene moisture evolution in this region, more climatic reconstructions from lake sediments, loess, sand-dunes and peats support a long-term regional wetting trend. Second, temperature records from ice cores, peats and stalagmites demonstrate a long-term winter warming trend during the Holocene in middle-to high-latitudes of Asia. Third, recent studies of aeolian sedimentary sequences reveal that the near-surface winds in winter gradually weakened during the Holocene, whereas the winter mid-latitude Westerlies strengthened in the Tienshan Mountains. Based on this evidence, in the arid Xinjiang region we propose an early to middle Holocene relatively cold and dry interval, with strong near-surface winds;and a warmer, wetter interval with weaker near-surface winds in the middle to late Holocene during winter. Additionally,we develop a conceptual model to explain the pattern of Holocene climate changes in this *** the early to the late Holocene, the increasing atmospheric COcontent and winter insolation,and the shrinking of high-latitude continental ice-sheets, resulted in increasing winter temperatures in middle to high latitudes in the Northern Hemisphere. Subsequently, the increased winter temperature strengthened the winter mid-latitude Westerlies and weakened the Siberian high-pressure system,which caused an increase in winter precipitation and a decrease in near-surface wind strength. T