Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China
Few proxies can provide quantitative reconstructions of past continental climatic and hydrological changes. Here, we report the first alkenone-based reconstruction of late Holocene temperature and salinity changes in Lake Qinghai, China. The alkenone-temperature proxy ( U(37)(k')) indicates up...
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Amer Geophysical Union
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ftucl:oai:eprints.ucl.ac.uk.OAI2:173622 2024-10-13T14:08:03+00:00 Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China Lui, Z Henderson, ACG Huang, Y 2006-05-10 application/pdf https://discovery.ucl.ac.uk/id/eprint/173622/1/2006GL026151.pdf https://discovery.ucl.ac.uk/id/eprint/173622/ eng eng Amer Geophysical Union https://discovery.ucl.ac.uk/id/eprint/173622/1/2006GL026151.pdf https://discovery.ucl.ac.uk/id/eprint/173622/ open Geophysical Research Letters , 33 (9) , Article L09707. (2006) Long-chain-alkenones Ice core evidence Sediments Distributions Record Climate Sea Plateau Waters Period Article 2006 ftucl 2024-09-30T07:42:09Z Few proxies can provide quantitative reconstructions of past continental climatic and hydrological changes. Here, we report the first alkenone-based reconstruction of late Holocene temperature and salinity changes in Lake Qinghai, China. The alkenone-temperature proxy ( U(37)(k')) indicates up to a 1 degrees C change in mean annual air temperature or a 2 degrees C change in summer lake water temperature during the late Holocene. Oscillating warm and cold periods could be related to the 20th century warm period, the Little Ice Age, the Medieval Warm Period, the Dark Ages Cold Period, and the Roman Warm Period. The relative importance of C(37: 4) alkenone to total C(37) alkenone production (% C(37: 4)) fluctuated between 15 - 45%, with higher values during warm periods, suggesting that lake water was also fresher during these periods. The coupled late Holocene surface temperature and salinity changes suggest that Asian monsoons strongly influenced the climate of the Lake Qinghai region. Article in Journal/Newspaper ice core University College London: UCL Discovery |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Long-chain-alkenones Ice core evidence Sediments Distributions Record Climate Sea Plateau Waters Period |
spellingShingle |
Long-chain-alkenones Ice core evidence Sediments Distributions Record Climate Sea Plateau Waters Period Lui, Z Henderson, ACG Huang, Y Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
topic_facet |
Long-chain-alkenones Ice core evidence Sediments Distributions Record Climate Sea Plateau Waters Period |
description |
Few proxies can provide quantitative reconstructions of past continental climatic and hydrological changes. Here, we report the first alkenone-based reconstruction of late Holocene temperature and salinity changes in Lake Qinghai, China. The alkenone-temperature proxy ( U(37)(k')) indicates up to a 1 degrees C change in mean annual air temperature or a 2 degrees C change in summer lake water temperature during the late Holocene. Oscillating warm and cold periods could be related to the 20th century warm period, the Little Ice Age, the Medieval Warm Period, the Dark Ages Cold Period, and the Roman Warm Period. The relative importance of C(37: 4) alkenone to total C(37) alkenone production (% C(37: 4)) fluctuated between 15 - 45%, with higher values during warm periods, suggesting that lake water was also fresher during these periods. The coupled late Holocene surface temperature and salinity changes suggest that Asian monsoons strongly influenced the climate of the Lake Qinghai region. |
format |
Article in Journal/Newspaper |
author |
Lui, Z Henderson, ACG Huang, Y |
author_facet |
Lui, Z Henderson, ACG Huang, Y |
author_sort |
Lui, Z |
title |
Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
title_short |
Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
title_full |
Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
title_fullStr |
Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
title_full_unstemmed |
Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China |
title_sort |
alkenone-based reconstruction of late-holocene surface temperature and salinity changes in lake qinghai, china |
publisher |
Amer Geophysical Union |
publishDate |
2006 |
url |
https://discovery.ucl.ac.uk/id/eprint/173622/1/2006GL026151.pdf https://discovery.ucl.ac.uk/id/eprint/173622/ |
genre |
ice core |
genre_facet |
ice core |
op_source |
Geophysical Research Letters , 33 (9) , Article L09707. (2006) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/173622/1/2006GL026151.pdf https://discovery.ucl.ac.uk/id/eprint/173622/ |
op_rights |
open |
_version_ |
1812814641070342144 |