Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago
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 se...
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ftvliz:oai:oma.vliz.be:238467 2023-05-15T16:40:33+02:00 Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago Sundaram, S. Yin, Q.Z. Berger, A. Muri, H. 2012 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238467 en eng info:eu-repo/semantics/altIdentifier/wos/000307981900005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s00382-011-1213-z http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238467 info:eu-repo/semantics/restrictedAccess %3Ci%3EClim.+Dyn.+39%285%29%3C%2Fi%3E%3A+1093-1105.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00382-011-1213-z%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00382-011-1213-z%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftvliz https://doi.org/10.1007/s00382-011-1213-z 2022-05-01T10:15:52Z 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. Article in Journal/Newspaper Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Okhotsk Climate Dynamics 39 5 1093 1105 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
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. |
format |
Article in Journal/Newspaper |
author |
Sundaram, S. Yin, Q.Z. Berger, A. Muri, H. |
spellingShingle |
Sundaram, S. Yin, Q.Z. Berger, A. Muri, H. Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
author_facet |
Sundaram, S. Yin, Q.Z. Berger, A. Muri, H. |
author_sort |
Sundaram, S. |
title |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
title_short |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
title_full |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
title_fullStr |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
title_full_unstemmed |
Impact of ice sheet induced North Atlantic oscillation on East Asian summer monsoon during an interglacial 500,000 years ago |
title_sort |
impact of ice sheet induced north atlantic oscillation on east asian summer monsoon during an interglacial 500,000 years ago |
publishDate |
2012 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238467 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea |
genre_facet |
Ice Sheet North Atlantic North Atlantic oscillation okhotsk sea |
op_source |
%3Ci%3EClim.+Dyn.+39%285%29%3C%2Fi%3E%3A+1093-1105.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00382-011-1213-z%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00382-011-1213-z%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000307981900005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s00382-011-1213-z http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238467 |
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 |
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1766030954842816512 |