Yangkou Cave, Southwest China 124-206KYrBP Stalagmite d18O Data Li, T.-Y.; Shen, C.-C.; Huang, L.-J.; Jiang, X.-Y.; Yang, X.-L.; Mii, H.-S.; Lee, S.-Y.; Lo, L. Li, T.-Y. Shen, C.-C. Huang, L.-J. Jiang, X.-Y. Yang, X.-L. Mii, H.-S. Lee, S.-Y. Lo, L. Monsoon earth science/paleoclimate/speleothems (depth,null,null,millimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (Yangkou Cave>LATITUDE 29.0333>LONGITUDE 107.1833) The orbital-timescale dynamics of the Quaternary Asian summer monsoons (ASM) are frequently attributed to precession-dominated northern hemispheric summer insolation. However, this long-term continuous ASM variability is inferred primarily from oxygen isotope records of stalagmites, mainly from Sanbao cave in mainland China, and may not provide a comprehensive picture of ASM evolution. A new spliced stalagmite oxygen isotope record from Yangkou cave tracks summer monsoon precipitation variation from 124 to 206 thousand years ago in Chongqing, southwest China. Our Yangkou record supports that the evolution of ASM was dominated by the North Hemisphere solar insolation on orbital timescales. When superimposed on the Sanbao record, the precipitation time series referred from Yangkou cave stalagmites supports the strong ASM periods at marine isotope stages (MIS) 6.3, 6.5, and 7.1 and weak ASM intervals at MIS 6.2, 6.4, and 7.0. This consistency confirms that ASM events affected most of mainland China. Except for the solar insolation forcing, the large amplitude of minimum d18O values in Yangkou record during glacial period, such as MIS 6.5, could stem from the enhanced prevailing Pacific trade wind and/or continental shelf exposure in the Indo-Pacific warm pool. STUDY NOTES: Oxygen isotope (d18O) data from 5 stalagmites collected in Yangkou Cave, Chongqing, southwest China, covering the interval from 124,000 to 206,000 years before present. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Li, T.-Y. Investigator : Shen, C.-C. Investigator : Huang, L.-J. Investigator : Jiang, X.-Y. Investigator : Yang, X.-L. Investigator : Mii, H.-S. Investigator : Lee, S.-Y. Investigator : Lo, L. 2014-10-08 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17287 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk47.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk05.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk61.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk47.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk05.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk61.txt English https://www.ncdc.noaa.gov/paleo/study/17287 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014.xls https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk47.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk05.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/yangkou2014yk61.txt T.-Y. Li, C.-C. Shen, L.-J. Huang, X.-Y. Jiang, X.-L. Yang, H.-S. Mii, S.-Y. Lee, and L. Lo2014Stalagmite-inferred variability of the Asian summer monsoon during the penultimate glacial-interglacial periodClimate of the Past1031211-121910.5194/cp-10-1211-2014http://www.clim-past.net/10/1211/2014/cp-10-1211-2014.html START YEAR: 206839 cal yr BP * END YEAR: 95506 cal yr BP 107.1833 29.0333 107.1833 29.0333