Sihailongwa Lake, Northeastern China alkenone-based temperature reconstruction Chu, G.Q.; Sun, Q.; Wang, X.; Liu, M.; Lin, Y.; Xie, M.; Shang, W.; Liu, J. Chu, G.Q. Sun, Q. Wang, X. Liu, M. Lin, Y. Xie, M. Shang, W. Liu, J. Other Hydroclimate Reconstruction earth science/paleoclimate/climate reconstructions|paleolimnology (sample identification,null,null,null,null,climate reconstructions|paleolimnology,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleolimnology (age at sample start,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (lake surface temperature,alkenone unsaturation index,null,degree Celsius,growing season,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (age at sample end,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (sample identification,null,null,null,null,climate reconstructions|paleolimnology,null,null,C,sample name) earth science/paleoclimate/climate reconstructions|paleolimnology (lake surface temperature,alkenone unsaturation index,null,degree Celsius,growing season,climate reconstructions|paleolimnology,null,null,N,alkenone-based temperature reconstruction for growing season) earth science/paleoclimate/climate reconstructions|paleolimnology (sample identification,null,null,null,null,climate reconstructions|paleolimnology,null,null,C,core name) earth science/paleoclimate/paleolimnology (Sihailongwa Lake>LATITUDE 42.17>LONGITUDE 126.36) Seasonal temperature variability over longer timescales could offer new insights into understanding different forcing factors and response processes in the climate system. Here we report an alkenone-based temperature reconstruction for growing season over the past 1600 years from the varved sediment in Lake Sihailongwan, northeastern China. The most notable cold spells occurred during the periods ad 480–860, ad 1260–1300, ad 1510–1570 and ad 1800–1900 with a temperature decrease of about 1°C compared with the 20th century. Based on the historical evidence such as ‘snow or frost in the summertime’ and ‘no ice during the wintertime’, we compile extreme cold summer events and warm winter events over the past 1600 years. The ‘Little Ice Age’ time period experienced more extreme cold summer/warm winter events, while the ‘Medieval Warm Period’ had milder winters. Comparatively, the natural proxy data show a general similar pattern with historical documents at decadal time scales, except for between ad 1620 and 1720. Our results show multidecadal to centennial variations in seasonal temperature, possibly caused by interactions of external natural forcing and atmosphere–ocean circulations. STUDY NOTES: Elevation estimated from GoogleEarth, rounded to 100 m. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Chu, G.Q. Investigator : Sun, Q. Investigator : Wang, X. Investigator : Liu, M. Investigator : Lin, Y. Investigator : Xie, M. Investigator : Shang, W. Investigator : Liu, J. 2017-05-19 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22581 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/chu2011/chu2011-sihailongwa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.lpd https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/chu2011/chu2011-sihailongwa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.lpd English https://www.ncdc.noaa.gov/paleo/study/22581 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/chu2011/chu2011-sihailongwa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Asi-SihailongwaLake.Chu.2011.lpd Chu, Guoqiang, Qing Sun, Xiaohua Wang, Meimei Liu, Yuan Lin, Manman Xie, Wenyu Shang, and Jiaqi Liu2011Seasonal temperature variability during the past 1600 years recorded in historical documents and varved lake sediment profiles from northeastern ChinaThe Holocene22785-79210.1177/0959683611430413 START YEAR: 391 AD * END YEAR: 2002 AD 126.36 42.17 126.36 42.17