Low-high latitude interaction forcing on the evolution of the 400 kyr cycle in East Asian winter monsoon records during the last 2.8 Myr
Low-high latitude interaction forcing on the evolution of the 400 kyr cycle in East Asian winter monsoon records during the last 2.8 Myr
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近2.8马里低高纬度相互作用对东亚冬季风记录400 kyr周期演化的影响
DOI：
10.1016/j.quascirev.2017.08.005
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发表时间：
2017-09
影响因子：
4
通讯作者：
Tian Jun
中科院分区：
文献类型：
--
作者：
Li Dawei;Zhao Meixun;Tian Jun
东亚冬季风(EAWM)的变化在冰期较强，在间冰期较弱，在过去的280万年里一直通过西伯利亚高压与北半球冰盖(NHIS)的盛衰密切相关。然而，上新世晚期至更新世早期(2.8-1.2 Ma)EAWM记录中的长偏心周期(约400KYR)不能与NHIS的变化联系在一起，这与更新世缺乏长偏心周期有关。本文利用中国南海北部的表层和次表层温差，首次记录了过去2.8Myr的低纬大气环流变化，以评估热带海洋与环流变化的相互作用。结果表明，EAWM变率在2.8~1.2 Ma之间表现出明显的400KYR循环，在高(低)地轨道偏心状态下表现为弱(强)EAWM循环。利用赤道太平洋西-东表面温差计算的超级厄尔尼诺-南方涛动(ENSO)代理记录显示，在过去2.8Myr期间有400个KYR循环，在高偏心率状态下为暖相。因此，我们认为，超ENSO平均态通过远程强迫产生了2.8 Ma到1.2 Ma之间的400KYR循环，从而强烈调制了EAWM的强度，而低NHIS体积不足以主导EAWM的变化，因为它在过去0.9Myr中占据主导地位，100KYR循环占主导地位。
Variability of the East Asian winter monsoon (EAWM), stronger during glacials and weaker during interglacials, has been tightly linked to the wax and wane of the Northern Hemisphere ice sheets (NHIS) via the Siberian High over the last 2.8 million years (Myr). However, the long eccentricity cycle (ca. 400 kyr) in the EAWM record from the late Pliocene to early-Pleistocene (2.8–1.2 Ma) could not be linked to NHIS changes, which lacked the long eccentricity cycle in the Pleistocene. Here, we present the first low latitude EAWM record of the last 2.8 Myr using surface and subsurface temperature difference from the northern South China Sea to evaluate interactions between tropical ocean and EAWM changes. The results show that the EAWM variability displayed significant 400 kyr cycle between 2.8 Ma and 1.2 Ma, with weak (strong) EAWM during high (low) earth orbital eccentricity state. A super El Niño–Southern Oscillation (ENSO) proxy record, calculated using west-east equatorial Pacific sea surface temperature differences, revealed 400 kyr cycles throughout the last 2.8 Myr with warm phase during high eccentricity state. Thus, we propose that super ENSO mean state strongly modulated the EAWM strength through remote forcing to generate the 400 kyr cycle between 2.8 Ma and 1.2 Ma, while low NHIS volume was not sufficient to dominate the EAWM variation as it did over the last 0.9 Myr with 100 kyr cycles in dominance.
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DOI：
10.1038/ismej.2008.33
发表时间：
2008
期刊：
The ISME Journal
影响因子：
--
作者：
J. Beman;B. Popp;C. A. Francis
通讯作者：
J. Beman;B. Popp;C. A. Francis
影响因子：
5
作者：
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Damste, Jaap S. Sinninghe
影响因子：
--
作者：
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通讯作者：
Jun Tian;Pinxian Wang;Ronghua Chen;Xinrong Cheng
DOI：
10.1016/j.palaeo.2005.04.018
发表时间：
2005-08
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
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通讯作者：
F. Zheng;Qianyu Li;Baohua Li;Muhong Chen;X. Tu;Jun Tian;Z. Jian
影响因子：
4.3
作者：
Berger, A.;Loutre, M. F.;Melice, J. L.
通讯作者：
Melice, J. L.