Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y.
A speleothem δ(18)O record from Xiaobailong cave in southwest China characterizes changes in summer monsoon precipitation in Northeastern India, the Himalayan foothills, Bangladesh, and northern Indochina over the last 252 kyr. This record is dominated by 23-kyr precessional cycles punctuated by pro...
Published in: | Proceedings of the National Academy of Sciences |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
2015
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/6zj2k8zn https://doi.org/10.1073/pnas.1424035112 |
id |
ftcdlib:oai:escholarship.org:ark:/13030/qt6zj2k8zn |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org:ark:/13030/qt6zj2k8zn 2024-09-15T18:23:15+00:00 Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. Cai, Yanjun Fung, Inez Y Edwards, R Lawrence An, Zhisheng Cheng, Hai Lee, Jung-Eun Tan, Liangcheng Shen, Chuan-Chou Wang, Xianfeng Day, Jesse A Zhou, Weijian Kelly, Megan J Chiang, John CH 2954 - 2959 2015-03-01 https://escholarship.org/uc/item/6zj2k8zn https://doi.org/10.1073/pnas.1424035112 unknown eScholarship, University of California qt6zj2k8zn https://escholarship.org/uc/item/6zj2k8zn doi:10.1073/pnas.1424035112 public Proceedings of the National Academy of Sciences of the United States of America, vol 112, iss 10 Indian summer monsoon glacial–interglacial precipitation stalagmite δ18O delta O-18 glacial-interglacial article 2015 ftcdlib https://doi.org/10.1073/pnas.1424035112 2024-06-28T06:28:22Z A speleothem δ(18)O record from Xiaobailong cave in southwest China characterizes changes in summer monsoon precipitation in Northeastern India, the Himalayan foothills, Bangladesh, and northern Indochina over the last 252 kyr. This record is dominated by 23-kyr precessional cycles punctuated by prominent millennial-scale oscillations that are synchronous with Heinrich events in the North Atlantic. It also shows clear glacial-interglacial variations that are consistent with marine and other terrestrial proxies but are different from the cave records in East China. Corroborated by isotope-enabled global circulation modeling, we hypothesize that this disparity reflects differing changes in atmospheric circulation and moisture trajectories associated with climate forcing as well as with associated topographic changes during glacial periods, in particular redistribution of air mass above the growing ice sheets and the exposure of the "land bridge" in the Maritime continents in the western equatorial Pacific. Article in Journal/Newspaper North Atlantic University of California: eScholarship Proceedings of the National Academy of Sciences 112 10 2954 2959 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Indian summer monsoon glacial–interglacial precipitation stalagmite δ18O delta O-18 glacial-interglacial |
spellingShingle |
Indian summer monsoon glacial–interglacial precipitation stalagmite δ18O delta O-18 glacial-interglacial Cai, Yanjun Fung, Inez Y Edwards, R Lawrence An, Zhisheng Cheng, Hai Lee, Jung-Eun Tan, Liangcheng Shen, Chuan-Chou Wang, Xianfeng Day, Jesse A Zhou, Weijian Kelly, Megan J Chiang, John CH Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
topic_facet |
Indian summer monsoon glacial–interglacial precipitation stalagmite δ18O delta O-18 glacial-interglacial |
description |
A speleothem δ(18)O record from Xiaobailong cave in southwest China characterizes changes in summer monsoon precipitation in Northeastern India, the Himalayan foothills, Bangladesh, and northern Indochina over the last 252 kyr. This record is dominated by 23-kyr precessional cycles punctuated by prominent millennial-scale oscillations that are synchronous with Heinrich events in the North Atlantic. It also shows clear glacial-interglacial variations that are consistent with marine and other terrestrial proxies but are different from the cave records in East China. Corroborated by isotope-enabled global circulation modeling, we hypothesize that this disparity reflects differing changes in atmospheric circulation and moisture trajectories associated with climate forcing as well as with associated topographic changes during glacial periods, in particular redistribution of air mass above the growing ice sheets and the exposure of the "land bridge" in the Maritime continents in the western equatorial Pacific. |
format |
Article in Journal/Newspaper |
author |
Cai, Yanjun Fung, Inez Y Edwards, R Lawrence An, Zhisheng Cheng, Hai Lee, Jung-Eun Tan, Liangcheng Shen, Chuan-Chou Wang, Xianfeng Day, Jesse A Zhou, Weijian Kelly, Megan J Chiang, John CH |
author_facet |
Cai, Yanjun Fung, Inez Y Edwards, R Lawrence An, Zhisheng Cheng, Hai Lee, Jung-Eun Tan, Liangcheng Shen, Chuan-Chou Wang, Xianfeng Day, Jesse A Zhou, Weijian Kelly, Megan J Chiang, John CH |
author_sort |
Cai, Yanjun |
title |
Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
title_short |
Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
title_full |
Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
title_fullStr |
Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
title_full_unstemmed |
Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. |
title_sort |
variability of stalagmite-inferred indian monsoon precipitation over the past 252,000 y. |
publisher |
eScholarship, University of California |
publishDate |
2015 |
url |
https://escholarship.org/uc/item/6zj2k8zn https://doi.org/10.1073/pnas.1424035112 |
op_coverage |
2954 - 2959 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Proceedings of the National Academy of Sciences of the United States of America, vol 112, iss 10 |
op_relation |
qt6zj2k8zn https://escholarship.org/uc/item/6zj2k8zn doi:10.1073/pnas.1424035112 |
op_rights |
public |
op_doi |
https://doi.org/10.1073/pnas.1424035112 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
112 |
container_issue |
10 |
container_start_page |
2954 |
op_container_end_page |
2959 |
_version_ |
1810463429345935360 |