Atmospheric connections with the North Atlantic enhanced the deglacial warming in northeast China
Atmospheric connections with the North Atlantic enhanced the deglacial warming in northeast China
复制标题
与北大西洋的大气联系增强了中国东北地区的冰消变暖
作者：
Yanhong Zheng;Richard Pancost;Xiaodong Liu;Zhangzhang Wang;B.D.A. Naafs;Xiaoxun Xie;Zhao Liu;Xuefeng Yu;Huan Yang
在亚洲最北端受季风影响的地区，最近一次冰川消融期间大气环流的变化没有得到很好的限制，这突显了我们对亚洲气候理解的一个根本差距。本文根据细菌支链甘油、二烷基甘油、四醚在哈尼泥炭序列(吉林省、吉林省)的分布，重建了末次冰期(16K.Y.)以来中国东北部的大陆气温。我们的结果表明，中国东北地区在冰川消融期间的温度波动很大(高达10℃)，这种振荡明显大于其他低纬或同纬度东亚地区的温度记录，但与气候模式模拟一致。这种增强的强度以及温度变化的时间性为大气遥相关提供了证据。特别是在高纬度，我们认为高纬度冷却与北极冰层的膨胀和变化有关。大西洋经向翻转环流增强了欧亚中纬度西风和东亚西北风的温度。在最后一次冰期，将冷气团输送到了中国东北部。在冰川消融期间，西风。因此冷气团的输送减弱，放大了该地区的消冰变暖。我们的结论是，北大西洋气候的变化对东亚季风影响地区的最北部地区产生了特别强烈的影响。
Variations in atmospheric circulation across the last deglaciation.in the northernmost monsoon-influenced regions of Asia are not well.constrained, highlighting a fundamental gap in our understanding.of Asian climate. Here we reconstruct continental air temperatures.for northeast China across the last deglaciation (past 16 k.y.), based.on the distribution of bacterial branched glycerol dialkyl glycerol.tetraethers in a sequence of the Hani peat (Jilin Province, northeast.China). Our results indicate large (as much as 10 °C) oscillations in.temperature in northeast China across the deglaciation, oscillations.significantly larger than observed in other temperature records from.low-latitude or same-latitude East Asia, but consistent with climate.model simulations. This enhanced magnitude, as well as the timing.of temperature variations, provides evidence for atmospheric teleconnections.with high latitudes; in particular, we suggest that highlatitude.cooling associated with Arctic ice expansion and changes in.Atlantic Meridional Overturning Circulation enhanced the intensity.and lowered the temperature of Eurasian mid-latitude westerlies and.northwesterly winds over East Asia during the last glacial, delivering.cold air masses to northeast China. During the deglaciation the westerlies.and therefore delivery of cold air masses weakened, amplifying.the deglacial warming in this region. We conclude that changes in.North Atlantic climate had a particularly strong impact on the northernmost.parts of the East Asian monsoon–influenced area.
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影响因子：
16.6
作者：
Zheng, Yanhong;Singarayer, Joy S.;Cheng, Peng;Yu, Xuefeng;Liu, Zhao;Valdes, Paul J.;Pancost, Richard D.
通讯作者：
Pancost, Richard D.
影响因子：
5.2
作者：
Jia G;Rao Z;Zhang J;Li Z;Chen F
通讯作者：
Chen F
DOI：
10.1177/0959683606069388
发表时间：
2006-12
期刊：
The Holocene
影响因子：
--
作者：
G. Schettler;Qiang Liu;J. Mingram;M. Stebich;P. Dulski
通讯作者：
G. Schettler;Qiang Liu;J. Mingram;M. Stebich;P. Dulski
影响因子：
4.4
作者：
M. Blaauw;J. Christen
通讯作者：
M. Blaauw;J. Christen
通过对中国新疆黄土-古土壤序列的多代理分析揭示了干旱中亚地区持续的全新世湿润趋势，在全新世晚期具有最潮湿的条件
影响因子：
4
作者：
Chen, Fahu;Jia, Jia;An, Chengbang
通讯作者：
An, Chengbang