# Central Scandinavia 1200 Year MXD April-September Temperature Reconstruction #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 2.0 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/20429 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/europe/c-scan2016mxd-temp.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Climate Reconstructions # # Parameter_Keywords: air temperature #-------------------- # Contribution_Date # Date: 2016-08-18 #-------------------- # Title # Study_Name: Central Scandinavia 1200 Year MXD April-September Temperature Reconstruction #-------------------- # Investigators # Investigators: Zhang, P.; Linderholm, H.W.; Gunnarson, B.E.; Björklund, J.; Chen, D. #-------------------- # Description_and_Notes # Description: Central Scandinavia (C-Scan) 1200-year warm season (April-September) mean temperature reconstruction, # based on tree-ring maximum density (MXD) data from Jämtland, Sweden, standardized using the RSFi algorithm, a hybrid # of Regional Curve Standardization (RCS) and individual Signal-Free (SF) standardisation. #-------------------- # Publication # Authors: Peng Zhang, Hans W. Linderholm, Björn E. Gunnarson, Jesper Björklund, and Deliang Chen # Published_Date_or_Year: 2016-06-03 # Published_Title: 1200 years of warm-season temperature variability in central Scandinavia inferred from tree-ring density # Journal_Name: Climate of the Past # Volume: 12 # Edition: # Issue: # Pages: 1297-1312 # Report_Number: # DOI: 10.5194/cp-12-1297-2016 # Online_Resource: http://www.clim-past.net/12/1297/2016/ # Full_Citation: # Abstract: Despite the emergence of new high-resolution temperature reconstructions around the world, only a few cover the Medieval Climate Anomaly (MCA). Here we present C-Scan, a new Scots pine tree-ring density-based reconstruction of warm-season (April-September) temperatures for central Scandinavia back to 850 CE, extending the previous reconstruction by 250 years. C-Scan is based on samples collected in a confined mountain region, adjusted for their differences in altitude and local environment, and standardised using the new RSFi algorithm to preserve low-frequency signals. In C-Scan, the warm peak of MCA occurs ca. 1000-1100 CE, and the Little Ice Age (LIA) between 1550 and 1900 CE. Moreover, during the last millennium the coldest decades are found around 1600 CE, and the warmest 10 and 30 years occur in the most recent century. By comparing C-Scan with other millennium-long temperature reconstructions from Fennoscandia, regional differences in multi-decadal temperature variability, especially during the warm period of the last millennium are revealed. Although these differences could be due to methodological reasons, they may indicate asynchronous warming patterns across Fennoscandia. Further investigation of these regional differences and the reasons and mechanisms behind them are needed. #------------------ # Funding_Agency # Funding_Agency_Name: Vetenskapsradet # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Formas # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Royal Swedish Academy of Sciences # Grant: #------------------ # Site_Information # Site_Name: Jämtland Sweden # Location: Europe>Northern Europe>Scandanavia>Sweden # Country: Sweden # Northernmost_Latitude: 63.2 # Southernmost_Latitude: 62.8 # Easternmost_Longitude: 14.9 # Westernmost_Longitude: 13.2 # Elevation: 370-750 m #------------------ # Data_Collection # Collection_Name: C-SCAN2016 # Earliest_Year: 850 # Most_Recent_Year: 2011 # Time_Unit: AD # Core_Length: m # Notes: #------------------ # Species # Species_Name: Pinus sylvestris L. # Common_Name: Scots Pine # Tree_Species_Code: PISY #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## age_AD age, , , AD, , , , ,N ## tempanomAMJJAS surface temperature anomaly, , , degrees C, April-September, Climate Reconstructions, anomaly from 1961-1990 period, linear regression,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_AD tempanomAMJJAS 850 0.74 851 0.24 852 0.24 853 -0.89 854 -0.18 855 0.22 856 -0.25 857 -0.29 858 -0.15 859 0.02 860 0.06 861 0.11 862 0.06 863 0.57 864 0.20 865 -0.05 866 1.11 867 -0.02 868 0.56 869 1.39 870 0.70 871 0.57 872 0.51 873 0.60 874 -0.21 875 0.09 876 0.99 877 0.26 878 0.68 879 0.50 880 0.85 881 0.08 882 0.60 883 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