Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago
Marine Isotope Stage (MIS) 13, an interglacial about 500,000Â years ago, is unique due to an exceptionally strong East Asia summer monsoon (EASM) occurring in a relatively cool climate with low greenhouse gas concentrations (GHG). This paper attempts to find one of the possible mechanisms for this s...
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ftunivlouvain:oai:dial.uclouvain.be:boreal:108379 2024-05-19T07:42:08+00:00 Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago Sundaram, S. Yin, Qiuzhen Berger, André Muri, H. UCL - SST/ELI/ELIC - Earth & Climate 2012 http://hdl.handle.net/2078.1/108379 https://doi.org/10.1007/s00382-011-1213-z eng eng Springer boreal:108379 http://hdl.handle.net/2078.1/108379 doi:10.1007/s00382-011-1213-z urn:ISSN:0930-7575 urn:EISSN:1432-0894 info:eu-repo/semantics/restrictedAccess Climate Dynamics, Vol. 39, p. 1093-1105 (2012) Blocking highs East Asian summer monsoon Ice sheets Interglacial MIS-13 North Atlantic Oscillation 1443 info:eu-repo/semantics/article 2012 ftunivlouvain https://doi.org/10.1007/s00382-011-1213-z 2024-04-24T01:42:09Z Marine Isotope Stage (MIS) 13, an interglacial about 500,000 years ago, is unique due to an exceptionally strong East Asia summer monsoon (EASM) occurring in a relatively cool climate with low greenhouse gas concentrations (GHG). This paper attempts to find one of the possible mechanisms for this seeming paradox. Simulations with an Earth System model LOVECLIM show that the presence of ice sheets over North America and Eurasia during MIS-13 induces a positive phase of the winter North Atlantic Oscillation (NAO) like feature. The ocean having a longer memory than the atmosphere, the oceanic anomalies associated with NAO persists until summer. The signals of summer NAO are transmitted to East Asia to reinforce the monsoon there through the stationary waves excited at the Asian Jet entrance. The geopotential height shows clearly a mid-latitude wave train with positive anomalies over the eastern Mediterranean/Caspian Sea and the Okhotsk Sea and a negative anomaly over Lake Baikal. This reinforces the effect of the high-latitude wave train induced independently by the Eurasian ice sheet topography as shown in previous study. These features reinforce the Meiyu front and enhance the precipitation over East Asia. The results obtained from LOVECLIM are further confirmed by an atmospheric general circulation model, ARPEGE. © 2011 Springer-Verlag. Article in Journal/Newspaper Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea DIAL@UCLouvain (Université catholique de Louvain) Climate Dynamics 39 5 1093 1105 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
Blocking highs East Asian summer monsoon Ice sheets Interglacial MIS-13 North Atlantic Oscillation 1443 |
spellingShingle |
Blocking highs East Asian summer monsoon Ice sheets Interglacial MIS-13 North Atlantic Oscillation 1443 Sundaram, S. Yin, Qiuzhen Berger, André Muri, H. Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
topic_facet |
Blocking highs East Asian summer monsoon Ice sheets Interglacial MIS-13 North Atlantic Oscillation 1443 |
description |
Marine Isotope Stage (MIS) 13, an interglacial about 500,000 years ago, is unique due to an exceptionally strong East Asia summer monsoon (EASM) occurring in a relatively cool climate with low greenhouse gas concentrations (GHG). This paper attempts to find one of the possible mechanisms for this seeming paradox. Simulations with an Earth System model LOVECLIM show that the presence of ice sheets over North America and Eurasia during MIS-13 induces a positive phase of the winter North Atlantic Oscillation (NAO) like feature. The ocean having a longer memory than the atmosphere, the oceanic anomalies associated with NAO persists until summer. The signals of summer NAO are transmitted to East Asia to reinforce the monsoon there through the stationary waves excited at the Asian Jet entrance. The geopotential height shows clearly a mid-latitude wave train with positive anomalies over the eastern Mediterranean/Caspian Sea and the Okhotsk Sea and a negative anomaly over Lake Baikal. This reinforces the effect of the high-latitude wave train induced independently by the Eurasian ice sheet topography as shown in previous study. These features reinforce the Meiyu front and enhance the precipitation over East Asia. The results obtained from LOVECLIM are further confirmed by an atmospheric general circulation model, ARPEGE. © 2011 Springer-Verlag. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Sundaram, S. Yin, Qiuzhen Berger, André Muri, H. |
author_facet |
Sundaram, S. Yin, Qiuzhen Berger, André Muri, H. |
author_sort |
Sundaram, S. |
title |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago |
title_short |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago |
title_full |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago |
title_fullStr |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago |
title_full_unstemmed |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000Â years ago |
title_sort |
impact of ice sheet induced north atlantic oscillation on east asian summer monsoon during an interglacial 500,000â years ago |
publisher |
Springer |
publishDate |
2012 |
url |
http://hdl.handle.net/2078.1/108379 https://doi.org/10.1007/s00382-011-1213-z |
genre |
Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea |
genre_facet |
Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea |
op_source |
Climate Dynamics, Vol. 39, p. 1093-1105 (2012) |
op_relation |
boreal:108379 http://hdl.handle.net/2078.1/108379 doi:10.1007/s00382-011-1213-z urn:ISSN:0930-7575 urn:EISSN:1432-0894 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00382-011-1213-z |
container_title |
Climate Dynamics |
container_volume |
39 |
container_issue |
5 |
container_start_page |
1093 |
op_container_end_page |
1105 |
_version_ |
1799481779590004736 |