noaa-recon-14548 China temperature during the past 2000 years Ge, Q.; Hao, Z.; Zheng, J.; Shao, X.M. China temperature during the past 2000 years 2013-06-07 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/14548 Investigator Q. Ge Investigator Z. Hao Investigator J. Zheng Investigator X.M. Shao 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 air temperature geoscientificInformation Air Temperature Reconstruction 5 AD 1995 AD 1945 cal yr BP -45 cal yr BP Complete 3.86 53.55 73.66 135.05 Continent Asia Eastern Asia Southeastern Asia>LATITUDE >LONGITUDE 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 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

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.

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