Chinese Interstadials 14–17 recorded in a precisely U-Th dated stalagmite from the northern edge of the Asian summer monsoon during the MIS 4/3 boundary
Chinese Interstadials 14–17 recorded in a precisely U-Th dated stalagmite from the northern edge of the Asian summer monsoon during the MIS 4/3 boundary
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中国Interstadials 14–17记录在MIS 4/3边界期间亚洲夏季季风北缘的精确U-Th定年石笋中
DOI：
10.1016/j.palaeo.2022.111265
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发表时间：
2022-10
期刊：
影响因子：
--
通讯作者：
R. Lawrence Edwards
中科院分区：
文献类型：
--
作者：
Wei Jia;Pingzhong Zhang;Xianfeng Wang;Hai Cheng;Shaoneng He;Hongyu Shi;Tao Gao;Xinhu Li;Leilei Zhang;Haiwei Zhang;Hanying Li;R. Lawrence Edwards
海洋同位素阶段（MIS）4/3边界，即所谓的未完成或失败的终止，是气候从冰川状态转变为类似于终止I的近间冰期条件的时期。该边界上的古气候记录可以深入了解全球气候系统尚未达到完全阈值状态的情况下气候突变的机制。然而，由于高时间分辨率的地质记录有限，对这一特定气候时期的调查很少。在这里，我们展示了来自中国西部万向洞的新的高分辨率石笋记录，该记录提供了亚洲夏季风（ASM）从其北部边缘地区的详细演化。该记录由7个高精度Usingle bondTh日期和647对同位素数据（δ18O和δ13C）建立，跨度为59.99 kyr B.P.至 52.94 kyr B.P.，并包含整个 MIS 4/3 边界。其δ18O揭示了千禧年尺度上的三个中国际际事件（CIS），即CIS A.16-17和14。亚千禧年事件CIS A.17a和16a对应于格陵兰际际事件17和16（GIS 16和17）。 CIS A.17b 与“前体事件”（PE 17）有关，而 PE 14 和 16 事件在我们的 δ18O 记录中并不明显，可能是由于 CIS A.14b 的逐渐变化和 CIS A.16b 的较低振幅所致。与其他气候记录，特别是高纬度地区的气候记录相比，我们的 δ18O 记录强化了 ASM 与高纬度气候之间密切遥相关的概念。 δ18O 从 CIS A.17b 到 17a 的逐渐变化以及 CIS A.16b 和 14b 的较小幅度可能与南极温度的逐渐变化有关，表明南方气候过程通过大气环流重组来调节中国西部 ASM 变化的主导作用。此外，西风急流相对于青藏高原的位置也可能抑制了这些时期18O的突然消耗。在 MIS 4/3 边界开始时（大约 59.82 kyr B.P.），北半球夏季日照的增加导致高纬度和低纬度之间的海洋-大气快速重组。这一过程导致降水量突然增加，同时 ASM 循环加强，促进了土壤微生物活动和植被类型从 C4 向 C3 的转变，如记录中 δ13C 的减少所示。此后，δ13C的百年尺度变化主要与整个MIS 4/3边界的土壤湿度变化有关。我们的δ18O记录进一步证实了MIS 4/3冰消作用主要受北方强迫作用的影响，但也涉及来自南方的气候变化过程。在区域尺度上，万向洞的δ18O记录可能很大程度上受到印度夏季风的影响，因此继承了南方的特征，其δ18O负值略高于中国其他地区
The Marine Isotope Stage (MIS) 4/3 boundary, the so-called unfinished or failed termination, is a time period during which climate shifted from glacial to near-interglacial conditions that is akin to the Termination I. Paleoclimate records on this boundary can provide insights into the mechanisms of abrupt climate change under the circumstances when the global climate system has not reached a full threshold state. However, investigations on this specific climate period are sparse largely due to limited geological records with high temporal resolution. Here, we present a new highly resolved stalagmite record from Wanxiang Cave in western China that provides a detailed evolution of the Asian summer monsoon (ASM) from its northern fringe region. Established with 7 high-precision Usingle bondTh dates and 647 pairs of isotope data (δ18O and δ13C), this record spans from 59.99 kyr B.P. to 52.94 kyr B.P., and contains the whole MIS 4/3 boundary. Its δ18O reveals three Chinese Interstadials (CISs) on millennial scales, i.e., CISs A.16–17 and 14. Sub-millennial events CIS A.17a and 16a correspond to the Greenland Interstadials 17 and 16 (GISs 16 and 17). The CIS A.17b is related to the ‘precursor events’ (PE 17), while the PEs 14 and 16 events are not evident in our δ18O record, probably due to the gradual change of the CIS A.14b and the lower amplitude of the CIS A.16b. Compared with other climate records, particularly those from the high latitudes, our δ18O record strengthens the notion of the close teleconnection between the ASM and high-latitude climates. Gradual change in δ18O from the CIS A.17b to 17a and the smaller amplitude of the CIS A.16b and 14b are likely coupled to the gradual Antarctic temperature variations, suggesting a dominant role of southern climate process to modulate ASM variability in western China via reorganization of atmospheric circulation. In addition, the westerly jet position relative to the Qinghai-Tibet Plateau may also have suppressed the abrupt 18O-depletion during these periods. At the onset of the MIS 4/3 boundary (at ∼59.82 kyr B.P.), an increase in the Northern Hemisphere summer insolation resulted in rapid ocean-atmospheric reorganizations between the high and low latitudes. This process led to an abrupt increase in precipitation associated with strengthening of ASM circulation, which promoted soil microbial activity and the transition of vegetation type from C4 to C3 as indicated by the δ13C decreasing in the record. After that, centennial-scale variations in δ13C are mainly related to soil humidity change throughout the MIS 4/3 boundary. Our δ18O record further confirms that the MIS 4/3 deglaciation is dominated by a northern-residing forcing, but also involves climate change process from the south. On a regional scale, the δ18O record from Wanxiang Cave may be largely influenced by the Indian summer monsoon, and thus inherits signatures from the south characterized by slightly more negative δ18O than other Chines
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高分辨率石笋Ύ´18O记录了中国中南地区跨越MIS 3/2过渡期的亚洲季风变化
影响因子：
5.3
作者：
Hai Cheng;Dianbing Liu;Yongjin Wang;R. Lawrence Edwards;Kan Zhao
通讯作者：
Kan Zhao
中国东南部格陵兰Interstadial 21详细的东亚季风历史
DOI：
10.1016/j.palaeo.2020.109752
发表时间：
2020-08
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Zhang Xin;Xiao Haiyan;Chou Yu-Chen;Cai Binggui;Lone Mahjoor Ahmad;Shen Chuan-Chou;Jiang Xiuyang
通讯作者：
Jiang Xiuyang
影响因子：
4
作者：
J. Schaefer;A. Putnam;G. Denton;M. Kaplan;S. Birkel;A. Doughty;Sam Kelley;D. Barrell;Robert C. Finkel;G. Winckler;Robert F. Anderson;U. Ninneman;S. Barker;R. Schwartz;B. G. Andersen;C. Schluechter
通讯作者：
J. Schaefer;A. Putnam;G. Denton;M. Kaplan;S. Birkel;A. Doughty;Sam Kelley;D. Barrell;Robert C. Finkel;G. Winckler;Robert F. Anderson;U. Ninneman;S. Barker;R. Schwartz;B. G. Andersen;C. Schluechter
影响因子：
4.3
作者：
Berger, A.;Loutre, M. F.;Melice, J. L.
通讯作者：
Melice, J. L.
DOI：
--
发表时间：
2007
影响因子：
11.1
作者：
S. Barker;G. Knorr
通讯作者：
S. Barker;G. Knorr