Spatial contrasts of the Holocene hydroclimate trend between North and East Asia
The hydroclimate over Asia has undergone important changes over the Holocene with spatially asynchronous trends. Proxy-based evidence shows that North Asia was markedly drier than today during the early Holocene, whereas East Asia, influenced by the monsoon system, was substantially wetter. Yet, the...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/321781 2024-01-07T09:43:10+01:00 Spatial contrasts of the Holocene hydroclimate trend between North and East Asia Zhang, Yurui Renssen, Hans Seppa, Heikki Valdes, Paul J. Li, Jianyong Department of Geosciences and Geography 2020-11-21T00:06:03Z 10 application/pdf http://hdl.handle.net/10138/321781 eng eng Elsevier Scientific Publ. Co 10.1016/j.quascirev.2019.106036 Yurui Zhang has received funding from the French National Research Agency (under ANR-17-EURE-0015 and ANR-10-LABX19). Heikki Seppa was funded by the Academy of Finland (project 316702, GRASS). Jianyong Li was funded by the Chinese Academy of Sciences (Y652001589, Y651031589 and XAB20161301) and the National Natural Science Foundation of China (NSFC 41801090). Zhang , Y , Renssen , H , Seppa , H , Valdes , P J & Li , J 2020 , ' Spatial contrasts of the Holocene hydroclimate trend between North and East Asia ' , Quaternary Science Reviews , vol. 227 , no. Jan 2020 , 106036 . https://doi.org/10.1016/j.quascirev.2019.106036 ORCID: /0000-0003-2494-7955/work/79876211 20169807-04d0-4207-bcdc-0ecda09fd13c http://hdl.handle.net/10138/321781 000503096400004 cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess ARID CENTRAL-ASIA SUMMER MONSOON SYSTEM MODEL ICE SHEETS CLIMATE PRECIPITATION TEMPERATURE MECHANISMS COMPLEXITY WESTERLIES 1171 Geosciences Article acceptedVersion 2020 ftunivhelsihelda 2023-12-14T00:06:24Z The hydroclimate over Asia has undergone important changes over the Holocene with spatially asynchronous trends. Proxy-based evidence shows that North Asia was markedly drier than today during the early Holocene, whereas East Asia, influenced by the monsoon system, was substantially wetter. Yet, the causes behind this contrast are only partly understood due to a lack of overview of the most important factors. Here we explore a combination of climate proxies and multiple climate-model simulations to show that the strong contrast between the dry North Asia and wet (mid-latitude) East Asia is explained by a complex interplay between the effects of remnant ice sheets and orbital forcing. In North Asia, the climate was dry due a weakening of the westerlies and reduced atmospheric humidity, linked to the ice sheets in North America and Fennoscandia. In East Asia, contrarily, the orbitally-forced enhancement of the summer monsoons caused the early Holocene climate to be much wetter than during the presentday. These results indicate that the sensitivity of the hydroclimate in Asia to climate-forcings is spatially different, with important implications for the interpretation of past and future climate changes in this region. (C) 2019 Elsevier Ltd. All rights reserved. Peer reviewed Article in Journal/Newspaper Fennoscandia HELDA – University of Helsinki Open Repository Quaternary Science Reviews 227 106036 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
ARID CENTRAL-ASIA SUMMER MONSOON SYSTEM MODEL ICE SHEETS CLIMATE PRECIPITATION TEMPERATURE MECHANISMS COMPLEXITY WESTERLIES 1171 Geosciences |
spellingShingle |
ARID CENTRAL-ASIA SUMMER MONSOON SYSTEM MODEL ICE SHEETS CLIMATE PRECIPITATION TEMPERATURE MECHANISMS COMPLEXITY WESTERLIES 1171 Geosciences Zhang, Yurui Renssen, Hans Seppa, Heikki Valdes, Paul J. Li, Jianyong Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
topic_facet |
ARID CENTRAL-ASIA SUMMER MONSOON SYSTEM MODEL ICE SHEETS CLIMATE PRECIPITATION TEMPERATURE MECHANISMS COMPLEXITY WESTERLIES 1171 Geosciences |
description |
The hydroclimate over Asia has undergone important changes over the Holocene with spatially asynchronous trends. Proxy-based evidence shows that North Asia was markedly drier than today during the early Holocene, whereas East Asia, influenced by the monsoon system, was substantially wetter. Yet, the causes behind this contrast are only partly understood due to a lack of overview of the most important factors. Here we explore a combination of climate proxies and multiple climate-model simulations to show that the strong contrast between the dry North Asia and wet (mid-latitude) East Asia is explained by a complex interplay between the effects of remnant ice sheets and orbital forcing. In North Asia, the climate was dry due a weakening of the westerlies and reduced atmospheric humidity, linked to the ice sheets in North America and Fennoscandia. In East Asia, contrarily, the orbitally-forced enhancement of the summer monsoons caused the early Holocene climate to be much wetter than during the presentday. These results indicate that the sensitivity of the hydroclimate in Asia to climate-forcings is spatially different, with important implications for the interpretation of past and future climate changes in this region. (C) 2019 Elsevier Ltd. All rights reserved. Peer reviewed |
author2 |
Department of Geosciences and Geography |
format |
Article in Journal/Newspaper |
author |
Zhang, Yurui Renssen, Hans Seppa, Heikki Valdes, Paul J. Li, Jianyong |
author_facet |
Zhang, Yurui Renssen, Hans Seppa, Heikki Valdes, Paul J. Li, Jianyong |
author_sort |
Zhang, Yurui |
title |
Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
title_short |
Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
title_full |
Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
title_fullStr |
Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
title_full_unstemmed |
Spatial contrasts of the Holocene hydroclimate trend between North and East Asia |
title_sort |
spatial contrasts of the holocene hydroclimate trend between north and east asia |
publisher |
Elsevier Scientific Publ. Co |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/321781 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
10.1016/j.quascirev.2019.106036 Yurui Zhang has received funding from the French National Research Agency (under ANR-17-EURE-0015 and ANR-10-LABX19). Heikki Seppa was funded by the Academy of Finland (project 316702, GRASS). Jianyong Li was funded by the Chinese Academy of Sciences (Y652001589, Y651031589 and XAB20161301) and the National Natural Science Foundation of China (NSFC 41801090). Zhang , Y , Renssen , H , Seppa , H , Valdes , P J & Li , J 2020 , ' Spatial contrasts of the Holocene hydroclimate trend between North and East Asia ' , Quaternary Science Reviews , vol. 227 , no. Jan 2020 , 106036 . https://doi.org/10.1016/j.quascirev.2019.106036 ORCID: /0000-0003-2494-7955/work/79876211 20169807-04d0-4207-bcdc-0ecda09fd13c http://hdl.handle.net/10138/321781 000503096400004 |
op_rights |
cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess |
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Quaternary Science Reviews |
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227 |
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106036 |
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1787424417973796864 |