noaa-lake-20518 Lake Qinghai, China 16,000 Year Alkenone Summer Temperature Reconstruction Hou, J.; Huang, Y.; Zhao, J.; Liu, Z.; Colman, S.M.; An, Z. Lake Qinghai, China 16,000 Year Alkenone Summer Temperature Reconstruction 2016-09-16 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20518 Investigator J. Hou Investigator Y. Huang Investigator J. Zhao Investigator Z. Liu Investigator S.M. Colman Investigator Z. An earth science paleoclimate paleolimnology alkenone,null,null,microgram per gram,null,paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology lake surface temperature,null,null,degree Celsius,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology reconstruction earth science paleoclimate paleolimnology geochemistry geoscientificInformation Air Temperature Reconstruction 15629 cal yr BP 0 cal yr BP Complete 36.8112 36.8112 100.137 100.137 3192 3192 Continent Asia Eastern Asia China Lake Qinghai LQDP05-1Fs>LATITUDE 36.8112>LONGITUDE 100.137 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Juzhi Hou, Yongsong Huang, Jiangtao Zhao, Zhonghui Liu, Steve Colman, Zhisheng An 2016 Geophysical Research Letters 43 3 1323-1330 10.1002/2015GL067317 http://onlinelibrary.wiley.com/doi/10.1002/2015GL067317/abstract

Summer temperatures on the Tibetan Plateau (TP) significantly affect stability of glaciers that provide steady water resources to nearly half of the world population. However, lack of reliable, long-term proxy records greatly impedes understanding of regional temperature sensitivity to climate forcings. Here we present a 16 ka long, alkenone-based summer temperature record from Lake Qinghai, northeastern TP that demonstrates major regional temperature response to changes in summer insolation and Atlantic Meridional Overturning Circulation during the Holocene and late glacial. Importantly, we find a period of sustained summer temperature decline (>4C) between 5 and 3.5 ka, which coincides with expansion of Barents Sea ice coverage and is likely driven by intensification of the Westerlies. This unusually long and pronounced regional cooling event likely delayed permanent human settlements on the high-altitude regions (>3000 m) of the TP by at least 500 years. STUDY NOTES: Sediment alkenone concentration data and summer temperature reconstruction for the past 16,000 years from Lake Qinghai, China

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/qinghai2016uk37temp.txt Data File; Lake Qinghai Alkenone Data and Summer Temperature Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11