Northern hemisphere ice sheet expansion intensified Asian aridification and the winter monsoon across the mid-Pleistocene transition

被引：19

作者：

Ao, Hong ^{[1
,2
]}

Rohling, Eelco J. ^{[3
,4
]}

Li, Xinzhou ^{[1
]}

Song, Yougui ^{[1
]}

Roberts, Andrew P. ^{[3
]}

Han, Yongming ^{[1
,2
]}

Poulsen, Christopher J. ^{[5
,6
]}

Jonell, Tara N. ^{[7
]}

Liebrand, Diederik ^{[8
,9
]}

Sun, Qiang ^{[10
]}

Li, Xinxia ^{[11
]}

Qiang, Xiaoke ^{[1
]}

Zhang, Peng ^{[1
]}

Dekkers, Mark J. ^{[12
]}

机构：

[1] Inst Earth Environm, Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China

[2] Laoshan Lab, Qingdao, Peoples R China

[3] Australian Natl Univ, Res Sch Earth Sci, Canberra, Australia

[4] Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton, England

[5] Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI USA

[6] Univ Oregon, Dept Earth Sci, Eugene, OR USA

[7] Univ Glasgow, Sch Geog & Earth Sci, Glasgow, Scotland

[8] Natl Oceanog Ctr, British Ocean Sediment Core Res Facil, Southampton, England

[9] Univ Manchester, Dept Earth & Environm Sci, Manchester, England

[10] Xian Univ Sci & Technol, Coll Geol & Environm, Xian, Peoples R China

[11] China Univ Geosci Wuhan, Sch Earth Sci, Wuhan, Peoples R China

[12] Univ Utrecht, Fac Geosci, Dept Earth Sci, Paleomagnet Lab Fort Hoofddijk, Utrecht, Netherlands

来源：

COMMUNICATIONS EARTH & ENVIRONMENT | 2023年 / 4卷 / 01期

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

LAST GLACIAL MAXIMUM; MIDDLE PLEISTOCENE TRANSITION; CHINESE LOESS PLATEAU; WESTERN QAIDAM BASIN; TIBETAN PLATEAU; CLIMATE; EVOLUTION; TEMPERATURE; RECORDS; VOLUME;

D O I：

10.1038/s43247-023-00686-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The dry and windy Asian glacials during the mid-Pleistocene transition were probably due to the Northern Hemisphere ice sheet expansion, suggest records of grain size and magnetic susceptibility from the Chinese Loess Plateau and model simulations. The mid-Pleistocene transition 1.25 to 0.6 million years ago marked a major shift in global climate periodicity from 41,000 to around 100,000 years without a concomitant orbital forcing shift. Here, we investigate Asian climate dynamics associated with two extreme glacial loess coarsening events at the onset and middle of the mid-Pleistocene transition by combining new and existing grain size and magnetic susceptibility records from the Chinese Loess Plateau spanning the last 1.6 million years with general circulation model simulations. We find that the two extreme glacial events reflect exceptionally enhanced Asian aridification and winter monsoon activity. They coincided with notable Northern Hemisphere glacial ice sheet expansion at 1.25 and 0.9 million years ago when the 100,000-year periodicity initiated and intensified, respectively. Our results indicate that these anomalously dry and windy Asian glacials were probably driven by an amplified terrestrial climate response to the coincident Northern Hemisphere ice sheet expansion.

引用

页数：11