A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores
Net accumulation records derived from alpine ice cores provide the most direct measurement of past precipitation. However, quantitative reconstruction of accumulation for past millennia remains challenging due to the difficulty in identifying annual layers in the deeper sections of ice cores. In thi...
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ftdoajarticles:oai:doaj.org/article:d2fc16dd6c8244338efffca9f837e3ab 2023-05-15T16:38:19+02:00 A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores W. Zhang S. Hou S.-Y. Wu H. Pang S. B. Sneed E. V. Korotkikh P. A. Mayewski T. M. Jenk M. Schwikowski 2022-05-01T00:00:00Z https://doi.org/10.5194/tc-16-1997-2022 https://doaj.org/article/d2fc16dd6c8244338efffca9f837e3ab EN eng Copernicus Publications https://tc.copernicus.org/articles/16/1997/2022/tc-16-1997-2022.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-16-1997-2022 1994-0416 1994-0424 https://doaj.org/article/d2fc16dd6c8244338efffca9f837e3ab The Cryosphere, Vol 16, Pp 1997-2008 (2022) Environmental sciences GE1-350 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/tc-16-1997-2022 2022-12-31T02:53:22Z Net accumulation records derived from alpine ice cores provide the most direct measurement of past precipitation. However, quantitative reconstruction of accumulation for past millennia remains challenging due to the difficulty in identifying annual layers in the deeper sections of ice cores. In this study, we propose a quantitative method to reconstruct annual accumulation from alpine ice cores for past millennia, using as an example an ice core drilled at the Chongce ice cap in the northwestern Tibetan Plateau (TP). First, we used laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) technology to develop ultra-high-resolution trace element records in three sections of the ice core and identified annual layers in each section based on seasonality of these elements. Second, based on nine 14 C ages determined for this ice core, we applied a two-parameter flow model to established the thinning parameter of this ice core. Finally, we converted the thickness of annual layers in the three sample sections to past accumulation rates based on the thinning parameter derived from the ice flow model. Our results show that the mean annual accumulation rates for the three sample sections are 109 mm yr −1 (2511–2541 years BP), 74 mm yr −1 (1682–1697 years BP), and 68 mm yr −1 (781–789 years BP), respectively. For comparison, the Holocene mean precipitation is 103 mm yr −1 . This method has the potential to reconstruct continuous high-resolution precipitation records covering millennia or even longer time periods. Article in Journal/Newspaper Ice cap ice core The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 16 5 1997 2008 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 W. Zhang S. Hou S.-Y. Wu H. Pang S. B. Sneed E. V. Korotkikh P. A. Mayewski T. M. Jenk M. Schwikowski A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Net accumulation records derived from alpine ice cores provide the most direct measurement of past precipitation. However, quantitative reconstruction of accumulation for past millennia remains challenging due to the difficulty in identifying annual layers in the deeper sections of ice cores. In this study, we propose a quantitative method to reconstruct annual accumulation from alpine ice cores for past millennia, using as an example an ice core drilled at the Chongce ice cap in the northwestern Tibetan Plateau (TP). First, we used laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) technology to develop ultra-high-resolution trace element records in three sections of the ice core and identified annual layers in each section based on seasonality of these elements. Second, based on nine 14 C ages determined for this ice core, we applied a two-parameter flow model to established the thinning parameter of this ice core. Finally, we converted the thickness of annual layers in the three sample sections to past accumulation rates based on the thinning parameter derived from the ice flow model. Our results show that the mean annual accumulation rates for the three sample sections are 109 mm yr −1 (2511–2541 years BP), 74 mm yr −1 (1682–1697 years BP), and 68 mm yr −1 (781–789 years BP), respectively. For comparison, the Holocene mean precipitation is 103 mm yr −1 . This method has the potential to reconstruct continuous high-resolution precipitation records covering millennia or even longer time periods. |
format |
Article in Journal/Newspaper |
author |
W. Zhang S. Hou S.-Y. Wu H. Pang S. B. Sneed E. V. Korotkikh P. A. Mayewski T. M. Jenk M. Schwikowski |
author_facet |
W. Zhang S. Hou S.-Y. Wu H. Pang S. B. Sneed E. V. Korotkikh P. A. Mayewski T. M. Jenk M. Schwikowski |
author_sort |
W. Zhang |
title |
A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
title_short |
A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
title_full |
A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
title_fullStr |
A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
title_full_unstemmed |
A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores |
title_sort |
quantitative method of resolving annual precipitation for the past millennia from tibetan ice cores |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-1997-2022 https://doaj.org/article/d2fc16dd6c8244338efffca9f837e3ab |
genre |
Ice cap ice core The Cryosphere |
genre_facet |
Ice cap ice core The Cryosphere |
op_source |
The Cryosphere, Vol 16, Pp 1997-2008 (2022) |
op_relation |
https://tc.copernicus.org/articles/16/1997/2022/tc-16-1997-2022.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-16-1997-2022 1994-0416 1994-0424 https://doaj.org/article/d2fc16dd6c8244338efffca9f837e3ab |
op_doi |
https://doi.org/10.5194/tc-16-1997-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
5 |
container_start_page |
1997 |
op_container_end_page |
2008 |
_version_ |
1766028597649211392 |