Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau
It is currently suggested that climate change on the northeastern Tibetan Plateau (TP) was influenced alternately by the monsoon and the Westerlies. However, the mechanisms driving Holocene climate change on the TP remain unclear, since the extent of the influence of individual atmospheric circulati...
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crsagepubl:10.1177/0959683615572852 2024-10-06T13:49:30+00:00 Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau Li, Xiumei Liang, Jie Hou, Juzhi Zhang, Wenjing 2015 http://dx.doi.org/10.1177/0959683615572852 https://journals.sagepub.com/doi/pdf/10.1177/0959683615572852 https://journals.sagepub.com/doi/full-xml/10.1177/0959683615572852 en eng SAGE Publications https://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 25, issue 6, page 892-899 ISSN 0959-6836 1477-0911 journal-article 2015 crsagepubl https://doi.org/10.1177/0959683615572852 2024-09-24T04:12:06Z It is currently suggested that climate change on the northeastern Tibetan Plateau (TP) was influenced alternately by the monsoon and the Westerlies. However, the mechanisms driving Holocene climate change on the TP remain unclear, since the extent of the influence of individual atmospheric circulation systems has not yet been clearly defined because of the shortage of high-quality paleoclimatic records. This is especially true in the central TP, where only a few ice core and paleolimnological records are available. Here, we present a decadal-resolution temperature record from Dagze Co in the central TP for the past 2000 years, based on the unsaturation index of long-chain alkenones, using an updated temperature calibration, and a record of precipitation isotopes from compound-specific isotope ratios of leaf waxes. The centennial-scale variation of the temperature and precipitation isotope records captures well-known climatic events over the past 1000 years, for example, the ‘Little Ice Age’, which was cooler and drier than the ‘Medieval Warm Period’. However, the relationship between temperature and the precipitation isotope records differed during the interval at 2000–1000 cal. yr BP compared to the past 1000 years, probably because of changes in precipitation seasonality and the additional influence of the Westerlies on the central TP. In addition, the temperature records exhibit a prominent 210-year cyclicity, suggesting a possible influence of solar radiation on temperature variability. Article in Journal/Newspaper ice core SAGE Publications The Holocene 25 6 892 899 |
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SAGE Publications |
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English |
description |
It is currently suggested that climate change on the northeastern Tibetan Plateau (TP) was influenced alternately by the monsoon and the Westerlies. However, the mechanisms driving Holocene climate change on the TP remain unclear, since the extent of the influence of individual atmospheric circulation systems has not yet been clearly defined because of the shortage of high-quality paleoclimatic records. This is especially true in the central TP, where only a few ice core and paleolimnological records are available. Here, we present a decadal-resolution temperature record from Dagze Co in the central TP for the past 2000 years, based on the unsaturation index of long-chain alkenones, using an updated temperature calibration, and a record of precipitation isotopes from compound-specific isotope ratios of leaf waxes. The centennial-scale variation of the temperature and precipitation isotope records captures well-known climatic events over the past 1000 years, for example, the ‘Little Ice Age’, which was cooler and drier than the ‘Medieval Warm Period’. However, the relationship between temperature and the precipitation isotope records differed during the interval at 2000–1000 cal. yr BP compared to the past 1000 years, probably because of changes in precipitation seasonality and the additional influence of the Westerlies on the central TP. In addition, the temperature records exhibit a prominent 210-year cyclicity, suggesting a possible influence of solar radiation on temperature variability. |
format |
Article in Journal/Newspaper |
author |
Li, Xiumei Liang, Jie Hou, Juzhi Zhang, Wenjing |
spellingShingle |
Li, Xiumei Liang, Jie Hou, Juzhi Zhang, Wenjing Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
author_facet |
Li, Xiumei Liang, Jie Hou, Juzhi Zhang, Wenjing |
author_sort |
Li, Xiumei |
title |
Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
title_short |
Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
title_full |
Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
title_fullStr |
Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
title_full_unstemmed |
Centennial-scale climate variability during the past 2000 years on the central Tibetan Plateau |
title_sort |
centennial-scale climate variability during the past 2000 years on the central tibetan plateau |
publisher |
SAGE Publications |
publishDate |
2015 |
url |
http://dx.doi.org/10.1177/0959683615572852 https://journals.sagepub.com/doi/pdf/10.1177/0959683615572852 https://journals.sagepub.com/doi/full-xml/10.1177/0959683615572852 |
genre |
ice core |
genre_facet |
ice core |
op_source |
The Holocene volume 25, issue 6, page 892-899 ISSN 0959-6836 1477-0911 |
op_rights |
https://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683615572852 |
container_title |
The Holocene |
container_volume |
25 |
container_issue |
6 |
container_start_page |
892 |
op_container_end_page |
899 |
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1812177573709348864 |