Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum
The dust cycle plays an important role in the long-term evolution of the climate and environment. In this paper, an improved climate model including aerosol processes was used to carry out a set of sensitivity experiments and comparative analyses of the effects of high-latitude ice-sheet extent and...
Published in: | Geological Magazine |
---|---|
Main Authors: | , , |
Format: | Report |
Language: | English |
Published: |
CAMBRIDGE UNIV PRESS
2020
|
Subjects: | |
Online Access: | http://ir.ieecas.cn/handle/361006/14814 https://doi.org/10.1017/S0016756819000335 |
id |
ftchinacascieeca:oai:ir.ieecas.cn:361006/14814 |
---|---|
record_format |
openpolar |
spelling |
ftchinacascieeca:oai:ir.ieecas.cn:361006/14814 2023-06-11T04:12:45+02:00 Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum Li, Xinzhou Liu, Xunchuan Zhou, Haibo 2020-05-01 http://ir.ieecas.cn/handle/361006/14814 https://doi.org/10.1017/S0016756819000335 英语 eng CAMBRIDGE UNIV PRESS GEOLOGICAL MAGAZINE http://ir.ieecas.cn/handle/361006/14814 doi:10.1017/S0016756819000335 dust activity ice sheet erosion factor last glacial maximum climate model CLIMATE PACIFIC DESERT OCEAN DEPOSITION TRANSPORT EMISSION AEROSOLS REGIONS CORES Geology Geosciences Multidisciplinary 期刊论文 2020 ftchinacascieeca https://doi.org/10.1017/S0016756819000335 2023-05-08T13:24:50Z The dust cycle plays an important role in the long-term evolution of the climate and environment. In this paper, an improved climate model including aerosol processes was used to carry out a set of sensitivity experiments and comparative analyses of the effects of high-latitude ice-sheet extent and abnormal dust erosion, as well as Earth's orbital parameters and atmospheric greenhouse gas content, on dust activities during the last glacial maximum. The comparative analysis found that incorporating the abnormal surface erosion factor alone could increase dust emissions by 2.77-fold and 3.77-fold of the present-day global and Asian dust emissions, respectively. The high-latitude ice-sheet factor caused global dust emissions to increase by 1.25-fold that of the present day. Sensitivity experiments showed that increased surface erosion in Asia during the last glacial maximum made the greatest contribution to the increased dust emissions in Asia, followed by the high-latitude ice-sheet factor, while the contributions of the greenhouse gas content and orbital parameters were relatively weak. Strong dust emissions during the glacial period were therefore not only dependent on the development of the high-latitude ice sheets but were strongly associated with the underlying surface characteristics of local dust source regions. Report Ice Sheet Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Pacific Geological Magazine 157 5 777 789 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
dust activity ice sheet erosion factor last glacial maximum climate model CLIMATE PACIFIC DESERT OCEAN DEPOSITION TRANSPORT EMISSION AEROSOLS REGIONS CORES Geology Geosciences Multidisciplinary |
spellingShingle |
dust activity ice sheet erosion factor last glacial maximum climate model CLIMATE PACIFIC DESERT OCEAN DEPOSITION TRANSPORT EMISSION AEROSOLS REGIONS CORES Geology Geosciences Multidisciplinary Li, Xinzhou Liu, Xunchuan Zhou, Haibo Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
topic_facet |
dust activity ice sheet erosion factor last glacial maximum climate model CLIMATE PACIFIC DESERT OCEAN DEPOSITION TRANSPORT EMISSION AEROSOLS REGIONS CORES Geology Geosciences Multidisciplinary |
description |
The dust cycle plays an important role in the long-term evolution of the climate and environment. In this paper, an improved climate model including aerosol processes was used to carry out a set of sensitivity experiments and comparative analyses of the effects of high-latitude ice-sheet extent and abnormal dust erosion, as well as Earth's orbital parameters and atmospheric greenhouse gas content, on dust activities during the last glacial maximum. The comparative analysis found that incorporating the abnormal surface erosion factor alone could increase dust emissions by 2.77-fold and 3.77-fold of the present-day global and Asian dust emissions, respectively. The high-latitude ice-sheet factor caused global dust emissions to increase by 1.25-fold that of the present day. Sensitivity experiments showed that increased surface erosion in Asia during the last glacial maximum made the greatest contribution to the increased dust emissions in Asia, followed by the high-latitude ice-sheet factor, while the contributions of the greenhouse gas content and orbital parameters were relatively weak. Strong dust emissions during the glacial period were therefore not only dependent on the development of the high-latitude ice sheets but were strongly associated with the underlying surface characteristics of local dust source regions. |
format |
Report |
author |
Li, Xinzhou Liu, Xunchuan Zhou, Haibo |
author_facet |
Li, Xinzhou Liu, Xunchuan Zhou, Haibo |
author_sort |
Li, Xinzhou |
title |
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
title_short |
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
title_full |
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
title_fullStr |
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
title_full_unstemmed |
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum |
title_sort |
joint influence of surface erosion and high-latitude ice-sheet extent on asian dust cycle during the last glacial maximum |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2020 |
url |
http://ir.ieecas.cn/handle/361006/14814 https://doi.org/10.1017/S0016756819000335 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
GEOLOGICAL MAGAZINE http://ir.ieecas.cn/handle/361006/14814 doi:10.1017/S0016756819000335 |
op_doi |
https://doi.org/10.1017/S0016756819000335 |
container_title |
Geological Magazine |
container_volume |
157 |
container_issue |
5 |
container_start_page |
777 |
op_container_end_page |
789 |
_version_ |
1768388816908845056 |