Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene
Modern Asian winter monsoon characterised by the strong northwesterly wind in East Asia and northeasterly wind in South Asia, has a great impact on the surface temperature of the Asian continent. Its outbreak can result in significant cooling of the monsoon region. However, it is still unclear wheth...
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ftleibnizopen:oai:oai.leibnizopen.de:YI8AyYkBdbrxVwz6sOwR 2023-08-27T04:03:44+02:00 Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene Tang, H. Eronen, Jussi Kaakinen, A. Utescher, Torsten Ahrens, B. Fortelius, M. 2015 https://repository.publisso.de/resource/frl:6408490 https://doi.org/10.5194/cpd-11-63-2015 https://www.clim-past-discuss.net/cp-2014-145/ eng eng https://creativecommons.org/licenses/by/3.0/ Climate of the past discussions, 11:63-93 2015 ftleibnizopen https://doi.org/10.5194/cpd-11-63-2015 2023-08-06T23:08:11Z Modern Asian winter monsoon characterised by the strong northwesterly wind in East Asia and northeasterly wind in South Asia, has a great impact on the surface temperature of the Asian continent. Its outbreak can result in significant cooling of the monsoon region. However, it is still unclear whether such an impact existed and is detectable in the deep past. In this study, we use temperature reconstructions from plant and mammal fossil data together with climate model results to examine the co-evolution of surface temperature and winter monsoon in the Late Miocene (11–5 Ma), when a significant change of the Asian monsoon system occurred. We find that a stronger-than-present winter monsoon wind might have existed in the Late Miocene due to the lower Asian orography, particularly the northern Tibetan Plateau and the mountains north of it. This can lead to a pronounced cooling in southern China and northern India, which counteracts the generally warmer conditions in the Late Miocene compared to present. The Late Miocene strong winter monsoon was characterised by a marked westerly component and primarily caused by a pressure anomaly between the Tibetan Plateau and Northern Eurasia, rather than by the gradient between the Siberian High and the Aleutian Low. As a result, the close association of surface temperature with winter monsoon strength on inter-annual scale as observed at present may not have established in the Late Miocene. Other/Unknown Material aleutian low LeibnizOpen (The Leibniz Association) |
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Open Polar |
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LeibnizOpen (The Leibniz Association) |
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English |
description |
Modern Asian winter monsoon characterised by the strong northwesterly wind in East Asia and northeasterly wind in South Asia, has a great impact on the surface temperature of the Asian continent. Its outbreak can result in significant cooling of the monsoon region. However, it is still unclear whether such an impact existed and is detectable in the deep past. In this study, we use temperature reconstructions from plant and mammal fossil data together with climate model results to examine the co-evolution of surface temperature and winter monsoon in the Late Miocene (11–5 Ma), when a significant change of the Asian monsoon system occurred. We find that a stronger-than-present winter monsoon wind might have existed in the Late Miocene due to the lower Asian orography, particularly the northern Tibetan Plateau and the mountains north of it. This can lead to a pronounced cooling in southern China and northern India, which counteracts the generally warmer conditions in the Late Miocene compared to present. The Late Miocene strong winter monsoon was characterised by a marked westerly component and primarily caused by a pressure anomaly between the Tibetan Plateau and Northern Eurasia, rather than by the gradient between the Siberian High and the Aleutian Low. As a result, the close association of surface temperature with winter monsoon strength on inter-annual scale as observed at present may not have established in the Late Miocene. |
author |
Tang, H. Eronen, Jussi Kaakinen, A. Utescher, Torsten Ahrens, B. Fortelius, M. |
spellingShingle |
Tang, H. Eronen, Jussi Kaakinen, A. Utescher, Torsten Ahrens, B. Fortelius, M. Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
author_facet |
Tang, H. Eronen, Jussi Kaakinen, A. Utescher, Torsten Ahrens, B. Fortelius, M. |
author_sort |
Tang, H. |
title |
Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
title_short |
Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
title_full |
Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
title_fullStr |
Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
title_full_unstemmed |
Strong winter monsoon wind causes surface cooling over India and China in the Late Miocene |
title_sort |
strong winter monsoon wind causes surface cooling over india and china in the late miocene |
publishDate |
2015 |
url |
https://repository.publisso.de/resource/frl:6408490 https://doi.org/10.5194/cpd-11-63-2015 https://www.clim-past-discuss.net/cp-2014-145/ |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
Climate of the past discussions, 11:63-93 |
op_rights |
https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5194/cpd-11-63-2015 |
_version_ |
1775346582514827264 |