noaa-recon-22890 Novgorod Medieval and Modern February-May Temperature Reconstruction Helama, S.; Huhtamaa, H.; Verkasalo, E.; Läänelaid, A. Novgorod Medieval and Modern February-May Temperature Reconstruction 2017-10-13 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22890 Investigator S. Helama Investigator H. Huhtamaa Investigator E. Verkasalo Investigator A. Läänelaid earth science paleoclimate climate reconstructions|tree ring age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,99% confidence interval lower bound,degree Celsius,Feb-May,climate reconstructions|tree ring,anomalized,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,null,degree Celsius,Feb-May,climate reconstructions|tree ring,anomalized,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,99% confidence interval upper bound,degree Celsius,Feb-May,climate reconstructions|tree ring,anomalized,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,95% confidence interval lower bound,degree Celsius,Feb-May,climate reconstructions|tree ring,anomalized,null,N,null earth science paleoclimate climate reconstructions|tree ring surface air temperature,ring width,95% confidence interval upper bound,degree Celsius,Feb-May,climate reconstructions|tree ring,anomalized,null,N,null earth science paleoclimate reconstructions air temperature geoscientificInformation Air Temperature Reconstruction 1160 AD 1989 AD 790 cal yr BP -39 cal yr BP Complete 58.58 58.58 31.25 31.25 -999 -999 Continent Europe Eastern Europe Russia Novgorod>LATITUDE 58.58>LONGITUDE 31.25 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 Samuli Helama, Heli Huhtamaa, Erkki Verkasalo, and Alar Läänelaid 2017 Journal of Archaeological Science: Reports 13 341-350 10.1016/j.jasrep.2017.04.008 http://www.sciencedirect.com/science/article/pii/S2352409X16305879

Updating archaeological tree-ring collections for calibrations and verifications with instrumental data is an essential step in 'updating' also our understanding of the climate signals in archaeological tree-ring data. Here we delve into the Novgorod tree-ring archives by supplementing the classical medieval chronology with tree-ring data from recently harvested timber. A large, random set of saw logs from the region of archaeological site, hypothetically mimicking the sampling of archaeological timber by medieval people, was used instead of conventional sampling by dendrochronologists on carefully selected sites, to enhance the reciprocal comparability of the datasets. Our tree-ring chronologies provide calibration data explaining 32% of variance in observed February-May temperature and, along with archaeological tree-ring data, a new temperature reconstruction over the medieval period 1160-1416 CE. In the context of the agricultural subsistence economy, we found indications of altering resilience to argue that changes from generally shorter to longer recurrence interval of frost and crop failure events from early (pre-1300) to late (post-1300) period, evident in historical-documentary sources, corresponds with tree-ring evidence. Decreasing amplitude of cool events and growth curtailments and increasing growth rates from early to late period demonstrate long-term change in climate conditions becoming more favorable to agricultural subsistence economy, with implication that the pan-European Great Famine (1315-1322 CE) did not probably extent into NW Russia. Tree-ring data provide means beyond the dating of wooden objects, relevant to the ways in which archaeologists, historians and natural scientists may collaborate in the study of past climate-society nexus. STUDY NOTES: A discontinuous (1160-1416 and 1921-1989 CE) February-May temperature reconstruction developed from living and archaeological ring-width chronologies of scots pine (PISY) for Novgorod (58.52N, 31.25E, https://www.ncdc.noaa.gov/paleo/study/3749)

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/russia/novgorod2017temp.txt Formatted Text Data File; Novgorod Medieval and Modern February-May Temperature Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11