Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years
Quantitative information regarding the long-term variability of precipitation and vegetation during the period covering both the Late Glacial and the Holocene on the Qinghai-Tibetan Plateau (QTP) is scarce. Herein, we provide new and numerical reconstructions for annual mean precipitation (PANN) and...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | http://ir.ieecas.cn/handle/361006/5458 https://doi.org/10.1002/2016JD026333 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/5458 2023-06-11T04:14:55+02:00 Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years Li, Jianyong Dodson, John Yan, Hong Cheng, Bo Zhang, Xiaojian Xu, Qinghai Ni, Jian Lu, Fengyan 2017-05-27 http://ir.ieecas.cn/handle/361006/5458 https://doi.org/10.1002/2016JD026333 英语 eng JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES http://ir.ieecas.cn/handle/361006/5458 doi:10.1002/2016JD026333 Science & Technology Physical Sciences ASIAN SUMMER MONSOON CHINESE LOESS PLATEAU HOLOCENE MOISTURE EVOLUTION CLIMATE CALIBRATION SET GLACIAL-MAXIMUM POLLEN RECORD HIGH-RESOLUTION NORTHERN CHINA LAKE-SEDIMENTS INNER-MONGOLIA Meteorology & Atmospheric Sciences Article 期刊论文 2017 ftchinacascieeca https://doi.org/10.1002/2016JD026333 2023-05-08T13:22:50Z Quantitative information regarding the long-term variability of precipitation and vegetation during the period covering both the Late Glacial and the Holocene on the Qinghai-Tibetan Plateau (QTP) is scarce. Herein, we provide new and numerical reconstructions for annual mean precipitation (PANN) and vegetation history over the last 18,000 years using high-resolution pollen data from Lakes Dalianhai and Qinghai on the northeastern QTP. Hitherto, five calibration techniques including weighted averaging, weighted average-partial least squares regression, modern analogue technique, locally weighted weighted averaging regression, and maximum likelihood were first employed to construct robust inference models and to produce reliable PANN estimates on the QTP. The biomization method was applied for reconstructing the vegetation dynamics. The study area was dominated by steppe and characterized with a highly variable, relatively dry climate at similar to 18,000-11,000 cal years B.P. PANN increased since the early Holocene, obtained a maximum at similar to 8000-3000 cal years B.P. with coniferous-temperate mixed forest as the dominant biome, and thereafter declined to present. The PANN reconstructions are broadly consistent with other proxy-based paleoclimatic records from the northeastern QTP and the northern region of monsoonal China. The possible mechanisms behind the precipitation changes may be tentatively attributed to the internal feedback processes of higher latitude (e.g., North Atlantic) and lower latitude (e.g., subtropical monsoon) competing climatic regimes, which are primarily modulated by solar energy output as the external driving force. These findings may provide important insights into understanding the future Asian precipitation dynamics under the projected global warming. Article in Journal/Newspaper North Atlantic Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Journal of Geophysical Research: Atmospheres 122 10 5132 5143 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Science & Technology Physical Sciences ASIAN SUMMER MONSOON CHINESE LOESS PLATEAU HOLOCENE MOISTURE EVOLUTION CLIMATE CALIBRATION SET GLACIAL-MAXIMUM POLLEN RECORD HIGH-RESOLUTION NORTHERN CHINA LAKE-SEDIMENTS INNER-MONGOLIA Meteorology & Atmospheric Sciences |
spellingShingle |
Science & Technology Physical Sciences ASIAN SUMMER MONSOON CHINESE LOESS PLATEAU HOLOCENE MOISTURE EVOLUTION CLIMATE CALIBRATION SET GLACIAL-MAXIMUM POLLEN RECORD HIGH-RESOLUTION NORTHERN CHINA LAKE-SEDIMENTS INNER-MONGOLIA Meteorology & Atmospheric Sciences Li, Jianyong Dodson, John Yan, Hong Cheng, Bo Zhang, Xiaojian Xu, Qinghai Ni, Jian Lu, Fengyan Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
topic_facet |
Science & Technology Physical Sciences ASIAN SUMMER MONSOON CHINESE LOESS PLATEAU HOLOCENE MOISTURE EVOLUTION CLIMATE CALIBRATION SET GLACIAL-MAXIMUM POLLEN RECORD HIGH-RESOLUTION NORTHERN CHINA LAKE-SEDIMENTS INNER-MONGOLIA Meteorology & Atmospheric Sciences |
description |
Quantitative information regarding the long-term variability of precipitation and vegetation during the period covering both the Late Glacial and the Holocene on the Qinghai-Tibetan Plateau (QTP) is scarce. Herein, we provide new and numerical reconstructions for annual mean precipitation (PANN) and vegetation history over the last 18,000 years using high-resolution pollen data from Lakes Dalianhai and Qinghai on the northeastern QTP. Hitherto, five calibration techniques including weighted averaging, weighted average-partial least squares regression, modern analogue technique, locally weighted weighted averaging regression, and maximum likelihood were first employed to construct robust inference models and to produce reliable PANN estimates on the QTP. The biomization method was applied for reconstructing the vegetation dynamics. The study area was dominated by steppe and characterized with a highly variable, relatively dry climate at similar to 18,000-11,000 cal years B.P. PANN increased since the early Holocene, obtained a maximum at similar to 8000-3000 cal years B.P. with coniferous-temperate mixed forest as the dominant biome, and thereafter declined to present. The PANN reconstructions are broadly consistent with other proxy-based paleoclimatic records from the northeastern QTP and the northern region of monsoonal China. The possible mechanisms behind the precipitation changes may be tentatively attributed to the internal feedback processes of higher latitude (e.g., North Atlantic) and lower latitude (e.g., subtropical monsoon) competing climatic regimes, which are primarily modulated by solar energy output as the external driving force. These findings may provide important insights into understanding the future Asian precipitation dynamics under the projected global warming. |
format |
Article in Journal/Newspaper |
author |
Li, Jianyong Dodson, John Yan, Hong Cheng, Bo Zhang, Xiaojian Xu, Qinghai Ni, Jian Lu, Fengyan |
author_facet |
Li, Jianyong Dodson, John Yan, Hong Cheng, Bo Zhang, Xiaojian Xu, Qinghai Ni, Jian Lu, Fengyan |
author_sort |
Li, Jianyong |
title |
Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
title_short |
Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
title_full |
Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
title_fullStr |
Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
title_full_unstemmed |
Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years |
title_sort |
quantitative precipitation estimates for the northeastern qinghai-tibetan plateau over the last 18,000 years |
publishDate |
2017 |
url |
http://ir.ieecas.cn/handle/361006/5458 https://doi.org/10.1002/2016JD026333 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES http://ir.ieecas.cn/handle/361006/5458 doi:10.1002/2016JD026333 |
op_doi |
https://doi.org/10.1002/2016JD026333 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
122 |
container_issue |
10 |
container_start_page |
5132 |
op_container_end_page |
5143 |
_version_ |
1768371311637168128 |