Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia
Hydroclimatic changes over arid central Asia (ACA) are not fully understood, primarily due to the paucity of accurate, high-resolution climatic records. Here we reconstruct hydroclimatic changes over the past 160 years at Lake Karakul, Pamir Plateau (central Asia), using multiple, high-resolution (s...
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Language: | English |
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Online Access: | http://ir.ieecas.cn/handle/361006/14344 https://doi.org/10.1016/j.gloplacha.2018.12.006 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/14344 2023-06-11T04:14:32+02:00 Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia Yan, Dongna Xu, Hai Lan, Jianghu Zhou, Kangen Ye, Yuanda Zhang, Jixiao An, Zhisheng Yeager, Kevin M. 2019-02-01 http://ir.ieecas.cn/handle/361006/14344 https://doi.org/10.1016/j.gloplacha.2018.12.006 英语 eng ELSEVIER SCIENCE BV GLOBAL AND PLANETARY CHANGE http://ir.ieecas.cn/handle/361006/14344 doi:10.1016/j.gloplacha.2018.12.006 Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul NORTH-ATLANTIC OSCILLATION HOLOCENE MOISTURE EVOLUTION TIEN-SHAN GLACIER FLUCTUATIONS BOSTEN LAKE ICE-AGE CLIMATE RECORD PRECIPITATION VARIABILITY Physical Geography Geology Geography Physical Geosciences Multidisciplinary 期刊论文 2019 ftchinacascieeca https://doi.org/10.1016/j.gloplacha.2018.12.006 2023-05-08T13:24:38Z Hydroclimatic changes over arid central Asia (ACA) are not fully understood, primarily due to the paucity of accurate, high-resolution climatic records. Here we reconstruct hydroclimatic changes over the past 160 years at Lake Karakul, Pamir Plateau (central Asia), using multiple, high-resolution (similar to 0.8 yr) sedimentary proxies. We find that hydroclimatic changes at Lake Karakul are well correlated with meteorological records, the snow equilibrium line altitude (ELA), reconstructed regional precipitation, the westerly index, and total solar irradiance (TSI), We contend that solar activity and the westerlies were the dominant influences on ACA hydro climatic variations during the period of record: (1) solar activity dominates regional temperature variations, precipitation/evaporation, and the advance/retreat of glaciers; (2) stronger westerly intensity (corresponding to higher westerly index and higher North Atlantic Oscillation (NAO) index) brings more water vapor from the west to ACA, and vice versa; and (3) the southerly migration of the westerly jet stream, which is closely related to lower TSI and temperatures, could favor more water vapor transported to ACA areas, and vice versa. We anticipate that continued global warming will result in more rapid glacial retreat, enhanced evaporation, lake area shrinkage, and deeper aridification over ACA. Report North Atlantic North Atlantic oscillation Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Ela ENVELOPE(9.642,9.642,63.170,63.170) Plateau Central ENVELOPE(69.577,69.577,-49.389,-49.389) Global and Planetary Change 173 53 60 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul NORTH-ATLANTIC OSCILLATION HOLOCENE MOISTURE EVOLUTION TIEN-SHAN GLACIER FLUCTUATIONS BOSTEN LAKE ICE-AGE CLIMATE RECORD PRECIPITATION VARIABILITY Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul NORTH-ATLANTIC OSCILLATION HOLOCENE MOISTURE EVOLUTION TIEN-SHAN GLACIER FLUCTUATIONS BOSTEN LAKE ICE-AGE CLIMATE RECORD PRECIPITATION VARIABILITY Physical Geography Geology Geography Physical Geosciences Multidisciplinary Yan, Dongna Xu, Hai Lan, Jianghu Zhou, Kangen Ye, Yuanda Zhang, Jixiao An, Zhisheng Yeager, Kevin M. Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
topic_facet |
Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul NORTH-ATLANTIC OSCILLATION HOLOCENE MOISTURE EVOLUTION TIEN-SHAN GLACIER FLUCTUATIONS BOSTEN LAKE ICE-AGE CLIMATE RECORD PRECIPITATION VARIABILITY Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
description |
Hydroclimatic changes over arid central Asia (ACA) are not fully understood, primarily due to the paucity of accurate, high-resolution climatic records. Here we reconstruct hydroclimatic changes over the past 160 years at Lake Karakul, Pamir Plateau (central Asia), using multiple, high-resolution (similar to 0.8 yr) sedimentary proxies. We find that hydroclimatic changes at Lake Karakul are well correlated with meteorological records, the snow equilibrium line altitude (ELA), reconstructed regional precipitation, the westerly index, and total solar irradiance (TSI), We contend that solar activity and the westerlies were the dominant influences on ACA hydro climatic variations during the period of record: (1) solar activity dominates regional temperature variations, precipitation/evaporation, and the advance/retreat of glaciers; (2) stronger westerly intensity (corresponding to higher westerly index and higher North Atlantic Oscillation (NAO) index) brings more water vapor from the west to ACA, and vice versa; and (3) the southerly migration of the westerly jet stream, which is closely related to lower TSI and temperatures, could favor more water vapor transported to ACA areas, and vice versa. We anticipate that continued global warming will result in more rapid glacial retreat, enhanced evaporation, lake area shrinkage, and deeper aridification over ACA. |
format |
Report |
author |
Yan, Dongna Xu, Hai Lan, Jianghu Zhou, Kangen Ye, Yuanda Zhang, Jixiao An, Zhisheng Yeager, Kevin M. |
author_facet |
Yan, Dongna Xu, Hai Lan, Jianghu Zhou, Kangen Ye, Yuanda Zhang, Jixiao An, Zhisheng Yeager, Kevin M. |
author_sort |
Yan, Dongna |
title |
Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
title_short |
Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
title_full |
Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
title_fullStr |
Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
title_full_unstemmed |
Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia |
title_sort |
solar activity and the westerlies dominate decadal hydroclimatic changes over arid central asia |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2019 |
url |
http://ir.ieecas.cn/handle/361006/14344 https://doi.org/10.1016/j.gloplacha.2018.12.006 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(69.577,69.577,-49.389,-49.389) |
geographic |
Ela Plateau Central |
geographic_facet |
Ela Plateau Central |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
GLOBAL AND PLANETARY CHANGE http://ir.ieecas.cn/handle/361006/14344 doi:10.1016/j.gloplacha.2018.12.006 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2018.12.006 |
container_title |
Global and Planetary Change |
container_volume |
173 |
container_start_page |
53 |
op_container_end_page |
60 |
_version_ |
1768392617872064512 |