Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum
We collected 143 loess optically stimulated luminescence (OSL) ages between 10 ka and 30 ka from Central Asia (CA), and analyzed their probability density functions (PDFs). The PDFs show dust accumulation was greater during the late Last Glacial Maximum (LGM) (23-19 ka) than that during the early LG...
Published in: | Geophysical Research Letters |
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Language: | English |
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AMER GEOPHYSICAL UNION
2021
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Online Access: | http://ir.ieecas.cn/handle/361006/16209 https://doi.org/10.1029/2020GL091194 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/16209 2023-06-11T04:12:08+02:00 Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum Cheng, Liangqing Song, Yougui Wu, Yubin Liu, Yonggang Liu, Huifang Chang, Hong Zong, Xiulan Kang, Shugang 2021-03-16 http://ir.ieecas.cn/handle/361006/16209 https://doi.org/10.1029/2020GL091194 英语 eng AMER GEOPHYSICAL UNION GEOPHYSICAL RESEARCH LETTERS http://ir.ieecas.cn/handle/361006/16209 doi:10.1029/2020GL091194 dust accumulation Last Glacial Maximum obliquity precession Siberian High westerlies CHINESE LOESS MINERAL-DUST ICE CORE WINTER MONSOON GRAIN-SIZE MIS 2 CLIMATE INSOLATION VARIABILITY INSIGHTS Geology Geosciences Multidisciplinary 期刊论文 2021 ftchinacascieeca https://doi.org/10.1029/2020GL091194 2023-05-08T13:25:13Z We collected 143 loess optically stimulated luminescence (OSL) ages between 10 ka and 30 ka from Central Asia (CA), and analyzed their probability density functions (PDFs). The PDFs show dust accumulation was greater during the late Last Glacial Maximum (LGM) (23-19 ka) than that during the early LGM (26.5-23 ka). The temporal variability of dust accumulation of CA loess is generally similar to that of Chinese Loess Plateau (CLP) loess, following precession. In contrast, dust accumulation in Greenland was stronger during the early LGM than that during the late LGM, following obliquity. Supported by numerical modeling experiments and our newly dating OSL ages, we conclude dust accumulation in CA and CLP during the LGM was controlled by Siberian High forced by precession, while dust accumulation in Greenland was closely related to both intensity of summer westerlies forced by obliquity, and to intensity of dust emissions at source forced by precession. Report Greenland ice core Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Greenland Geophysical Research Letters 48 5 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
dust accumulation Last Glacial Maximum obliquity precession Siberian High westerlies CHINESE LOESS MINERAL-DUST ICE CORE WINTER MONSOON GRAIN-SIZE MIS 2 CLIMATE INSOLATION VARIABILITY INSIGHTS Geology Geosciences Multidisciplinary |
spellingShingle |
dust accumulation Last Glacial Maximum obliquity precession Siberian High westerlies CHINESE LOESS MINERAL-DUST ICE CORE WINTER MONSOON GRAIN-SIZE MIS 2 CLIMATE INSOLATION VARIABILITY INSIGHTS Geology Geosciences Multidisciplinary Cheng, Liangqing Song, Yougui Wu, Yubin Liu, Yonggang Liu, Huifang Chang, Hong Zong, Xiulan Kang, Shugang Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
topic_facet |
dust accumulation Last Glacial Maximum obliquity precession Siberian High westerlies CHINESE LOESS MINERAL-DUST ICE CORE WINTER MONSOON GRAIN-SIZE MIS 2 CLIMATE INSOLATION VARIABILITY INSIGHTS Geology Geosciences Multidisciplinary |
description |
We collected 143 loess optically stimulated luminescence (OSL) ages between 10 ka and 30 ka from Central Asia (CA), and analyzed their probability density functions (PDFs). The PDFs show dust accumulation was greater during the late Last Glacial Maximum (LGM) (23-19 ka) than that during the early LGM (26.5-23 ka). The temporal variability of dust accumulation of CA loess is generally similar to that of Chinese Loess Plateau (CLP) loess, following precession. In contrast, dust accumulation in Greenland was stronger during the early LGM than that during the late LGM, following obliquity. Supported by numerical modeling experiments and our newly dating OSL ages, we conclude dust accumulation in CA and CLP during the LGM was controlled by Siberian High forced by precession, while dust accumulation in Greenland was closely related to both intensity of summer westerlies forced by obliquity, and to intensity of dust emissions at source forced by precession. |
format |
Report |
author |
Cheng, Liangqing Song, Yougui Wu, Yubin Liu, Yonggang Liu, Huifang Chang, Hong Zong, Xiulan Kang, Shugang |
author_facet |
Cheng, Liangqing Song, Yougui Wu, Yubin Liu, Yonggang Liu, Huifang Chang, Hong Zong, Xiulan Kang, Shugang |
author_sort |
Cheng, Liangqing |
title |
Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
title_short |
Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
title_full |
Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
title_fullStr |
Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
title_full_unstemmed |
Drivers for Asynchronous Patterns of Dust Accumulation in Central and Eastern Asia and in Greenland During the Last Glacial Maximum |
title_sort |
drivers for asynchronous patterns of dust accumulation in central and eastern asia and in greenland during the last glacial maximum |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2021 |
url |
http://ir.ieecas.cn/handle/361006/16209 https://doi.org/10.1029/2020GL091194 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core |
genre_facet |
Greenland ice core |
op_relation |
GEOPHYSICAL RESEARCH LETTERS http://ir.ieecas.cn/handle/361006/16209 doi:10.1029/2020GL091194 |
op_doi |
https://doi.org/10.1029/2020GL091194 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
5 |
_version_ |
1768387791591309312 |