Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y
A speleothem δ18O 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 promi...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/107132 http://hdl.handle.net/10220/25357 |
| _version_ | 1826113330949914624 |
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| 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 C. H. |
| author2 | Earth Observatory of Singapore |
| author_facet | Earth Observatory of Singapore 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 C. H. |
| author_sort | Cai, Yanjun |
| collection | NTU |
| description | A speleothem δ18O 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. |
| first_indexed | 2024-10-01T03:21:27Z |
| format | Journal Article |
| id | ntu-10356/107132 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:21:27Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1071322022-02-16T16:31:24Z 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 C. H. Earth Observatory of Singapore Indian summer monsoon stalagmite δ18O precipitation glacial–interglacial A speleothem δ18O 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. Accepted Version 2015-04-10T05:02:20Z 2019-12-06T22:25:25Z 2015-04-10T05:02:20Z 2019-12-06T22:25:25Z 2015 2015 Journal Article Cai, Y., Fung, I. Y., Edwards, R. L., An, Z., Cheng, H., Lee, J. E., et al. (2015). Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y. Proceedings of the National Academy of Sciences of the United States of America, 112(10), 2954-2959. https://hdl.handle.net/10356/107132 http://hdl.handle.net/10220/25357 10.1073/pnas.1424035112 25713347 en Proceedings of the National Academy of Sciences of the United States of America © 2015 The Author(s) (Published by National Academy of Sciences).This is the author created version of a work that has been peer reviewed and accepted for publication by Proceedings of the National Academy of Sciences of the United States of America, The Author(s) (Published by National Academy of Sciences). It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1073/pnas.1424035112]. 20 p. application/pdf |
| spellingShingle | Indian summer monsoon stalagmite δ18O precipitation 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 C. H. Variability of stalagmite-inferred Indian monsoon precipitation over the past 252,000 y |
| title | 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_short | 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 |
| topic | Indian summer monsoon stalagmite δ18O precipitation glacial–interglacial |
| url | https://hdl.handle.net/10356/107132 http://hdl.handle.net/10220/25357 |
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