East Asian monsoon instability at the stage 5a/4 transition
The physics involved in the abrupt climate changes of the late Quaternary have eluded paleoclimatologists for many years. More paleoclimatic records characteristic of different elements of the global climate system are needed for better understanding of the cause–feedback relationships in the system...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.665.1335 2023-05-15T13:34:14+02:00 East Asian monsoon instability at the stage 5a/4 transition Shangfa Xiong Zhongli Ding Tungsheng Liu Jingzhao Zhang The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.665.1335 http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.665.1335 http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf text 2002 ftciteseerx 2016-01-08T17:03:29Z The physics involved in the abrupt climate changes of the late Quaternary have eluded paleoclimatologists for many years. More paleoclimatic records characteristic of different elements of the global climate system are needed for better understanding of the cause–feedback relationships in the system. The East Asian monsoon is an important part of the global climate system and the mechanical links between the East Asian monsoon and other climatic elements around the world may hold a key to our knowledge of abrupt climate changes in East Asia and probably over a larger part of the globe. Previous studies have detected millennial-scale winter mon-soon oscillations during the last glaciation and probably also during the last interglaciation in loess sequences across China. However, less attention has been paid to the abrupt summer monsoon changes and the stage 5a/ 4 transition, an important period for the evolution of the East Asian monsoon when the global climate shifted towards the last glaciation. Here we report on two loess sections from eastern China which were dated using a thermoluminescence (TL) technique. The pedogenic and other sediment parameters suggest that the summer monsoon experienced a two-step abrupt retreat at the stage 5a/4 transition. The variations in the proxies for the winter monsoon are synchronized with the summer monsoon proxies during this brief interval, implying a direct and immediate link between high latitude and low latitude mechanisms. These changes may be corre-lated with similar climatic oscillations observed in the North Atlantic, Europe and Antarctica, raising the pos-sibility that the forcing factors that induced these changes are global in extent. Text Antarc* Antarctica North Atlantic Unknown |
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English |
description |
The physics involved in the abrupt climate changes of the late Quaternary have eluded paleoclimatologists for many years. More paleoclimatic records characteristic of different elements of the global climate system are needed for better understanding of the cause–feedback relationships in the system. The East Asian monsoon is an important part of the global climate system and the mechanical links between the East Asian monsoon and other climatic elements around the world may hold a key to our knowledge of abrupt climate changes in East Asia and probably over a larger part of the globe. Previous studies have detected millennial-scale winter mon-soon oscillations during the last glaciation and probably also during the last interglaciation in loess sequences across China. However, less attention has been paid to the abrupt summer monsoon changes and the stage 5a/ 4 transition, an important period for the evolution of the East Asian monsoon when the global climate shifted towards the last glaciation. Here we report on two loess sections from eastern China which were dated using a thermoluminescence (TL) technique. The pedogenic and other sediment parameters suggest that the summer monsoon experienced a two-step abrupt retreat at the stage 5a/4 transition. The variations in the proxies for the winter monsoon are synchronized with the summer monsoon proxies during this brief interval, implying a direct and immediate link between high latitude and low latitude mechanisms. These changes may be corre-lated with similar climatic oscillations observed in the North Atlantic, Europe and Antarctica, raising the pos-sibility that the forcing factors that induced these changes are global in extent. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Shangfa Xiong Zhongli Ding Tungsheng Liu Jingzhao Zhang |
spellingShingle |
Shangfa Xiong Zhongli Ding Tungsheng Liu Jingzhao Zhang East Asian monsoon instability at the stage 5a/4 transition |
author_facet |
Shangfa Xiong Zhongli Ding Tungsheng Liu Jingzhao Zhang |
author_sort |
Shangfa Xiong |
title |
East Asian monsoon instability at the stage 5a/4 transition |
title_short |
East Asian monsoon instability at the stage 5a/4 transition |
title_full |
East Asian monsoon instability at the stage 5a/4 transition |
title_fullStr |
East Asian monsoon instability at the stage 5a/4 transition |
title_full_unstemmed |
East Asian monsoon instability at the stage 5a/4 transition |
title_sort |
east asian monsoon instability at the stage 5a/4 transition |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.665.1335 http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf |
genre |
Antarc* Antarctica North Atlantic |
genre_facet |
Antarc* Antarctica North Atlantic |
op_source |
http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.665.1335 http://sourcedb.cas.cn/sourcedb_igg_cas/cn/zjrck/200907/W020100517451317699201.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766050518002565120 |