The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections
A high-resolution stalagmite oxygen isotope record from Tianmen Cave, located in the south central Tibetan Plateau, characterizes detailed climatic variations between 8.7 and 4.3 ka BP on centennial and decadal time scales, with a temporal resolution of 3 to 7 years. The Tianmen record is in good ag...
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sg-ntu-dr.10356-986972020-03-07T12:45:26Z The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections Cai, Yanjun Zhang, Haiwei Cheng, Hai An, Zhisheng Edwards, R. Lawrence Wang, Xianfeng Tan, Liangcheng Liang, Fuyuan Wang, Jin Kelly, Megan Earth Observatory of Singapore A high-resolution stalagmite oxygen isotope record from Tianmen Cave, located in the south central Tibetan Plateau, characterizes detailed climatic variations between 8.7 and 4.3 ka BP on centennial and decadal time scales, with a temporal resolution of 3 to 7 years. The Tianmen record is in good agreement with speleothem records from Asian monsoon regions (i.e., Dongge Cave, Dykoski et al., 2005 and Wang et al., 2005; Qunf Cave, Fleitmann et al., 2003), upwelling records from the Arabian Sea (Gupta et al., 2003 and Gupta et al., 2005) and peat bog records from southeast Tibetan Plateau (Hong et al., 2003), indicating that the Indian summer monsoon (ISM) gradually weakened as Northern Hemisphere summer insolation declined during the early-mid Holocene and that ISM intensity, rather than temperature, dominates the precipitation δ18O on centennial to decadal time scales in the southern TP. On centennial to decadal time scales, the detrended Tianmen record correlates well with the Greenland ice core record, further confirming the mechanistic connection between the ISM and high northern latitude temperature changes. Meanwhile, the Tianmen record bears significant solar activity cycles, suggesting that the solar output changes may affect the variability of the ISM and likely the position of the Intertropical Convergence Zone (ITCZ) as well. Moreover, due to joint effects of changes in monsoon precipitation, moisture source and temperature, the Tianmen δ18O record shows much larger amplitude changes than speleothem δ18O records from low-elevation Asian Monsoon regions, which is similar to the previously reported Marine Isotope Stage (MIS) 5 record (Cai et al., 2010), suggesting heightened sensitivity of precipitation isotope composition to climate changes over the high-elevation regions and further demonstrating that the stable isotope lapse rate may change under different climatic conditions. 2013-07-01T06:38:07Z 2019-12-06T19:58:35Z 2013-07-01T06:38:07Z 2019-12-06T19:58:35Z 2012 2012 Journal Article Cai, Y., Zhang, H., Cheng, H., An, Z., Edwards, R. L., Wang, X., et al. (2012). The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections. Earth and Planetary Science Letters, 335-336, 135-144. 0012-821X https://hdl.handle.net/10356/98697 http://hdl.handle.net/10220/10860 10.1016/j.epsl.2012.04.035 en Earth and planetary science letters © 2012 Elsevier B.V. |
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A high-resolution stalagmite oxygen isotope record from Tianmen Cave, located in the south central Tibetan Plateau, characterizes detailed climatic variations between 8.7 and 4.3 ka BP on centennial and decadal time scales, with a temporal resolution of 3 to 7 years. The Tianmen record is in good agreement with speleothem records from Asian monsoon regions (i.e., Dongge Cave, Dykoski et al., 2005 and Wang et al., 2005; Qunf Cave, Fleitmann et al., 2003), upwelling records from the Arabian Sea (Gupta et al., 2003 and Gupta et al., 2005) and peat bog records from southeast Tibetan Plateau (Hong et al., 2003), indicating that the Indian summer monsoon (ISM) gradually weakened as Northern Hemisphere summer insolation declined during the early-mid Holocene and that ISM intensity, rather than temperature, dominates the precipitation δ18O on centennial to decadal time scales in the southern TP. On centennial to decadal time scales, the detrended Tianmen record correlates well with the Greenland ice core record, further confirming the mechanistic connection between the ISM and high northern latitude temperature changes. Meanwhile, the Tianmen record bears significant solar activity cycles, suggesting that the solar output changes may affect the variability of the ISM and likely the position of the Intertropical Convergence Zone (ITCZ) as well. Moreover, due to joint effects of changes in monsoon precipitation, moisture source and temperature, the Tianmen δ18O record shows much larger amplitude changes than speleothem δ18O records from low-elevation Asian Monsoon regions, which is similar to the previously reported Marine Isotope Stage (MIS) 5 record (Cai et al., 2010), suggesting heightened sensitivity of precipitation isotope composition to climate changes over the high-elevation regions and further demonstrating that the stable isotope lapse rate may change under different climatic conditions. |
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Earth Observatory of Singapore |
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Earth Observatory of Singapore Cai, Yanjun Zhang, Haiwei Cheng, Hai An, Zhisheng Edwards, R. Lawrence Wang, Xianfeng Tan, Liangcheng Liang, Fuyuan Wang, Jin Kelly, Megan |
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Article |
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Cai, Yanjun Zhang, Haiwei Cheng, Hai An, Zhisheng Edwards, R. Lawrence Wang, Xianfeng Tan, Liangcheng Liang, Fuyuan Wang, Jin Kelly, Megan |
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Cai, Yanjun Zhang, Haiwei Cheng, Hai An, Zhisheng Edwards, R. Lawrence Wang, Xianfeng Tan, Liangcheng Liang, Fuyuan Wang, Jin Kelly, Megan The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
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Cai, Yanjun |
title |
The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
title_short |
The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
title_full |
The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
title_fullStr |
The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
title_full_unstemmed |
The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections |
title_sort |
holocene indian monsoon variability over the southern tibetan plateau and its teleconnections |
publishDate |
2013 |
url |
https://hdl.handle.net/10356/98697 http://hdl.handle.net/10220/10860 |
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1681044950148448256 |