# Kangerlussuaq, West Greenland 6000 Year Lake Alkenone Data #---------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #---------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/11176 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-lake-11176.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Paleolimnology # # Dataset_DOI: 10.25921/5j9j-d297 # # Science_Keywords: abrupt climate change #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/greenland/kangerlussuaq2011-stack-noaa.txt # Data_Download_Description: NOAA Template File; Composite of Alkenone Data # #-------------------- # Contribution_Date # Date: 2011-05-31 #-------------------- # File_Last_Modified_Date # Date: 2024-06-06 #-------------------- # Title # Study_Name: Kangerlussuaq, West Greenland 6000 Year Lake Alkenone Data #-------------------- # Investigators # Investigators: D'Andrea, W.J.(https://orcid.org/0000-0003-0182-8857); Huang, Y.(https://orcid.org/0000-0002-9287-4543); Fritz, S.C.(https://orcid.org/0000-0002-4423-4189); Anderson, N.J.(https://orcid.org/0000-0002-0037-0306) #-------------------- # Description_Notes_and_Keywords # Description: Alkenone unsaturation measurements from Holocene sediment cores of two lakes in Kangerlussuaq, West Greenland (Braya Sø and Lake E) and a stacked record derived by averaging the overlapping sections of the two records (Kanger Stack). The age model was developed by aligning the independently radiocarbon dated UK37 records from Braya Sø and Lake E within the 2 sigma error of their respective chronological uncertainties prior to 20-yr resampling utilized in the Kanger Stack. Braya Sø and Lake E, Kangerlussuaq, West Greenland: 67°N, 50°42'W, 170m elev. #-------------------- # Publication # Authors: William J. D’Andrea, Yongsong Huang, Sherilyn C. Fritz and N. John Anderson # Journal_Name: Proceedings of the National Academy of Sciences # Published_Title: Abrupt Holocene climate change as an important factor for human migration in West Greenland # Published_Date_or_Year: 2011 # Volume: 108 # Pages: 9765-9769 # Issue: 24 # Report_Number: # DOI: 10.1073/pnas.1101708108 # Full_Citation: # Abstract: West Greenland has had multiple episodes of human colonization and cultural transitions over the past 4,500 y. However, the explanations for these large-scale human migrations are varied, including climatic factors, resistance to adaptation, economic marginalization, mercantile exploration, and hostile neighborhood interactions. Evaluating the potential role of climate change is complicated by the lack of quantitative paleoclimate reconstructions near settlement areas and by the relative stability of Holocene temperature derived from ice cores atop the Greenland ice sheet. Here we present high-resolution records of temperature over the past 5,600 y based on alkenone unsaturation in sediments of two lakes in West Greenland. We find that major temperature changes in the past 4,500 y occurred abruptly (within decades), and were coeval in timing with the archaeological records of settlement and abandonment of the Saqqaq, Dorset, and Norse cultures, which suggests that abrupt temperature changes profoundly impacted human civilization in the region. Temperature variations in West Greenland display an antiphased relationship to temperature changes in Ireland over centennial to millennial timescales, resembling the interannual to multidecadal temperature seesaw associated with the North Atlantic Oscillation. #-------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: ARC-0402383, AGS-0081226 #-------------------- # Site_Information # Site_Name: Braya Sø and Lake E # Location: Greenland # Northernmost_Latitude: 67.062 # Southernmost_Latitude: 66.987 # Easternmost_Longitude: -51.039 # Westernmost_Longitude: -51.127 # Elevation_m: 170 #-------------------- # Data_Collection # Collection_Name: D'Andrea2011 Stack # First_Year: 5590 # Last_Year: 90 # Time_Unit: cal yr BP # Core_Length_m: # Parameter_Keywords: geochemistry # Notes: #-------------------- # Chronology_Information # Chronology: #-------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by '##' in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## age_calBP age,,,calendar year before present,,paleolimnology,,,N, ## Uk'37 alkenone unsaturation index Uk37 prime,,,dimensionless,,paleolimnology,composited,,N,West Greenland alkenone stack (Braya So Lake and Lake E) #-------------------- # Data: # Data lines follow (have no #) # Data line format - 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