Sub-millennial variability of Asian monsoon intensity during the early MIS 3 and its analogue to the ice age terminations
Sub-millennial variability of Asian monsoon intensity during the early MIS 3 and its analogue to the ice age terminations
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MIS 3早期亚洲季风强度的亚千年变化及其与冰河时代终止的类似物
DOI：
10.1016/j.quascirev.2010.01.008
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发表时间：
2010-05
影响因子：
4
通讯作者：
He, Yaoqi
中科院分区：
文献类型：
--
作者：
Wu, Jiangying;Chen, Shitao;Dong, Jinguo;Wang, Xianfeng;Jiang, Xiuyang;Hardt, Ben;Wang, Yongjin;Edwards, R. Lawrence;Kong, Xinggong;Liu, Dianbing;Cheng, Hai;Zhao, Kan;He, Yaoqi
虽然据报告轨道气候转变和千年气候转变的开始和持续大致相似，但人们对它们的气候事件序列在同一物理过程中相互联系的程度知之甚少。本文根据1200个氧同位素和15230 Th年龄数据，以12年的平均分辨率，对中国西南部五鹿洞石笋的1200个氧同位素记录，详细记录了61.3 ~ 50.5kaBP的亚洲季风（AM）历史。两个重复的高分辨率方解石δ 18 O剖面显示了四个千年尺度的强夏季风事件，在时间和结构上类似于中国的A.17-A.14（CIS A.17-A.14），在中国其他地方和格陵兰的17-14（GIS 17-14）。这些事件表现出两个不同的阶段，与格陵兰温度和风暴的数十年/百年变化相一致。这种关系揭示了高纬度和低纬度气候之间的紧密耦合，在亚千年尺度，这意味着西风的作用，在连接格陵兰岛的温度和上午。在海洋同位素阶段（MIS）4/3边界附近，连续的AM事件类似于终端I周围的Bølling-Younger Dryas（YD）结构，但频率更高。沿着来自双极温度和大气CH 4类似变化的证据，我们认为，全球类似气候结构的重现可能是由大西洋纬向翻转环流（AMOC）在全球冰量边界阈值下的不同时间尺度上的变化引起的，正如双极跷跷板模型所预测的那样。
Although the initiation and continuation of orbital and millennial climate transitions were reported to be roughly similar, little is yet known about the extent to which their sequences of climate events are linked together in the same physical processes. Here we present a stalagmite isotope record from Wulu Cave, southwestern China, based on 1200 oxygen isotope data and 15230Th ages, registering a detailed history of the Asian Monsoon (AM) from 61.3 to 50.5 ka BP with an average resolution of 12 yr. Two replicated, high-resolution calcite δ18O profiles show four millennial-scale strong summer monsoon events, analogous in timing and structure to Chinese Interstadials A.17–A.14 (CIS A.17–A.14), as recorded elsewhere in China and Greenland Interstadials 17–14 (GIS 17–14). These events exhibit two distinct phases, consistent with multi-decadal/centennial shifts in Greenland temperature and storminess. This relationship reveals a tight coupling between high- and low-latitude climates at sub-millennial scales, implying a role for westerly winds in linking Greenland temperature and the AM. Around the Marine Isotope Stage (MIS) 4/3 boundary, successive AM events resemble, but in higher frequency, structure of the Bølling–Younger Dryas (YD) surrounding Termination I. Along with evidence from similar shifts in bipolar temperature and atmospheric CH4, we suggest that the recurrence of similar climate structure worldwide is likely caused by changes in Atlantic meridional overturning circulation (AMOC) at various timescales under thresholds of global ice volume boundaries, as predicted by the bipolar seesaw model.
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影响因子：
56.9
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作者：
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影响因子：
0.9
作者：
Dorale, Jeffrey A.;Liu, Zaihua
通讯作者：
Liu, Zaihua