Droughts in the East Asian summer monsoon margin during the last 6 kyrs: Link to the North Atlantic cooling events
Droughts in the East Asian summer monsoon margin during the last 6 kyrs: Link to the North Atlantic cooling events
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过去 6 年内东亚夏季风边缘的干旱：与北大西洋变冷事件的联系
DOI：
10.1016/j.quascirev.2016.09.001
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发表时间：
2016-11
影响因子：
4
通讯作者：
Hideki Yamagata
中科院分区：
文献类型：
--
作者：
Linlin Cui;He Li;Dingshuai Xue;Hideki Yamagata
与高纬度的联系、热带海洋的强迫和太阳变率都被认为是近千年全球气候变化的主导因素，但这些因素对东亚夏季风变率的相对重要性还没有达成共识。通过对东亚夏季风边缘大理湖沉积柱样中内生方解石的Ca、Mg含量、Mg/Ca比值、δ 18 O和δ 13 C值的高分辨率分析，探讨了近6 kr以来东亚夏季风的亚千年变化及其可能的驱动力。这些化学代用数据的增加被解释为该地区的干旱事件，由于强烈的蒸发损失压倒了湖泊的水输入。在这项研究中的化学代理数据结合多代理指标，包括粒度组分和总有机碳浓度从同一个沉积物芯意味着，在东亚夏季风强度的下降可能在过去6 kyrs的干旱事件的触发中发挥了主导作用。结果表明，东亚夏季风强度在5.8-4.75，3.2-2.8，1.65-1.15和0.65- 0.2kyrs BP的时间间隔内显著下降。在过去的6 kyrs在东亚夏季风强度大幅度下降对应的时间发生在北大西洋的冰筏碎片，表明千年到百年尺度的东亚夏季风强度的变化主要是由气候过程控制发生在北方高纬度地区。这些资料表明，在亚千年尺度上，持续的全球变暖可能有利于东亚夏季风环流的加强，有利于向中国北方半干旱地区输送更多的降水。
Teleconnections to the high latitudes, forcing by the tropical oceans and solar variability have all been suggested as dominant factors in the sub-millennial global climate changes, yet there is little consensus as to the relative importance of these factors for the East Asian summer monsoon (EASM) variability. This study presents the results of high-resolution analyses of Ca and Mg concentrations, Mg/Ca ratio, δ18O and δ13C values of endogenic calcites from a sediment core from Dali Lake in the EASM margin, in order to investigate the sub-millennial EASM variability and its possible driving forces during the last 6 kyrs. Increases in these chemical proxy data were interpreted as drought events in the region due to the intensive evaporation losses overwhelming the water input to the lake. The chemical proxy data in this study combined with multi-proxy indicators including grain size component and total organic carbon concentrations from the same sediment core imply that declines in the EASM intensity may have played a dominant role in triggering the drought events during the last 6 kyrs. The results indicate that the EASM intensity significantly declined at the intervals of 5.8–4.75, 3.2–2.8, 1.65–1.15 and 0.65–0.2 kyrs BP. Large declines in the EASM intensity during the last 6 kyrs correspond in time to occurrences of ice-rafted debris in the North Atlantic, indicating that millennial-to-centennial scale changes in the EASM intensity were mainly controlled by climatic processes occurring in the northern high latitudes. These data imply that persistent global warming may be favorable for the strengthening of the EASM circulation and for the transportation of more rainfall to the semi-arid regions of northern China on sub-millennial scales.
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影响因子：
4
作者：
B. Steinman;David P. Pompeani;M. Abbott;J. Ortiz;N. Stansell;M. Finkenbinder;L. Mihindukulasooriya
通讯作者：
B. Steinman;David P. Pompeani;M. Abbott;J. Ortiz;N. Stansell;M. Finkenbinder;L. Mihindukulasooriya
测试将颗粒尺寸成分与现代碎屑湖湖水位状况联系起来的模型
影响因子：
2.2
作者：
Fan, J.W.;Zhai, D.Y.;Wen, R.L.;Qin, X.G.
通讯作者：
Qin, X.G.
影响因子：
5
作者：
T. Tarutani;R. Clayton;T. Mayeda
通讯作者：
T. Tarutani;R. Clayton;T. Mayeda
风暴事件期间通过同位素监测识别不同的水分源
影响因子：
3.8
作者：
Li;Jie;Tao;Tao;Pang;Zhonghe;Tan;Ming;Kong;Yanlong;Duan;Wuhui;Zhang;Yuwei
通讯作者：
Yuwei
西南黄土高原六盘山近6200年植被历史、气候变化与人类活动
DOI：
10.1016/j.quaint.2012.08.2079
发表时间：
2010-07
影响因子：
3
作者：
Yu, Z.C.;Zhang, K.;Zhao, Y.;Zhou, A.F.;Chen, F.H.
通讯作者：
Chen, F.H.