China temperature during the past 2000 years Ge, Q.; Hao, Z.; Zheng, J.; Shao, X.M. Ge, Q. Hao, Z. Zheng, J. Shao, X.M. Air Temperature Reconstruction earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,95% confidence interval upper bound,degree Celsius,annual,climate reconstructions,anomalized,regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; partial least squares regression) earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,null,degree Celsius,annual,climate reconstructions,anomalized,regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; partial least squares regression) earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,null,degree Celsius,annual,climate reconstructions,anomalized,principal component analysis|regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; principal components regression) earth science/paleoclimate/climate reconstructions (age,null,null,year Common Era,null,climate reconstructions,null,null,N,null) earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,95% confidence interval lower bound,degree Celsius,annual,climate reconstructions,anomalized,principal component analysis|regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; principal components regression) earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,95% confidence interval upper bound,degree Celsius,annual,climate reconstructions,anomalized,principal component analysis|regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; principal components regression) earth science/paleoclimate/climate reconstructions (surface temperature,multiple proxies,95% confidence interval lower bound,degree Celsius,annual,climate reconstructions,anomalized,regression analysis,N,reference period: 1851-1950 A.D.; calibration data set: local instrumental data; partial least squares regression) earth science/paleoclimate/reconstructions (Southeastern Asia>LATITUDE >LONGITUDE ) We use principal component regression and partial least squares regression to separately reconstruct a composite series of temperature variations in China, and associated uncertainties, at a decadal resolution over the past 2000 yr. The reconstruction is developed using proxy temperature data with relatively high confidence levels from five regions across China, and using a temperature series from observations by the Chinese Meteorological Administration, covering the period from 1871 to 2000. Relative to the 1851–1950 climatology, our two reconstructions show four warm intervals during AD1–AD200, AD551–AD 760, AD951–AD 1320, and after AD1921, and four cold intervals during AD 201–AD 350, AD 441–AD 530, AD781–AD950, and AD1321–AD 1920. The temperatures during AD981–AD 1100 and AD1201–AD 1270 are comparable to those of the Present Warm Period, but have an uncertainty of ±0.28°C to ±0.42°C at the 95% confidence interval. Temperature variations over China are typically in phase with those of the Northern Hemisphere (NH) after 1000, a period which covers the Medieval Climate Anomaly, the Little Ice Age, and the Present Warm Period. In contrast, a warm period in China during AD541–AD 740 is not obviously seen in the NH. STUDY NOTES: Dataset of China temperature reconstruction from 1 C.E. to 2000C.E. has 10-year time resolution. PLS is reconstruction using partial Least Square regression method in the paper; PLS_UP and PLS_BO are the uncertainties at 95% confidence level; PC is reconstruction using Principle component regression method, PC_UP and PC_BO are same with PLS_UP and PLS_BO. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Ge, Q. Investigator : Hao, Z. Investigator : Zheng, J. Investigator : Shao, X.M. 2013-06-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14548 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ge2013/ge2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ge2013/ge2013.txt English https://www.ncdc.noaa.gov/paleo/study/14548 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ge2013/ge2013.txt Ge, Q., Z. Hao, J. Zheng, X. Shao. 2013. Temperature changes over the past 2000 yr in China and comparison with the Northern Hemisphere. Climate of the Past, 9, 1153-1160. DOI:10.5194/cp-9-1153-2013 START YEAR: 5 AD * END YEAR: 1995 AD 73.66 3.86 135.05 53.55