# Lake Bolshoye Shchuchye, Polar Urals 24,000 Year Leaf Wax d2H Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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/33593 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/bolshoye-shchuchye2021.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Data Type: Paleolimnology # # Dataset DOI: # # Parameter_Keywords: geochemistry, hydrogen isotopes #-------------------- # Contribution_Date # Date: 2021-10-11 #-------------------- # File_Last_Modified_Date # Date: 2021-10-11 #-------------------- # Title # Study_Name: Lake Bolshoye Shchuchye, Polar Urals 24,000 Year Leaf Wax d2H Data #-------------------- # Investigators # Investigators: Cowling, O.C.; Thomas, E.K.; Svendsen, J.I.; Mangerud, J.; Haflidason, H.; Regnoll, C.; Brendryen, J. #------------------ # Description_Notes_and_Keywords # Description: Leaf wax concentration and hydrogen isotope (d2H) data from sediments collected in Lake Bolshoye Shchuchye, Polar Urals, for the past 24,000 years. #------------------ # Publication # Authors: Cowling, Owen; Thomas, Elizabeth; Svendsen, John Inge; Mangerud, Jan; Haflidason, Haflidi; Regnoll, Carl; Brendryen, Jo # Published_Date_or_Year: 2021 # Published_Title: The Polar Ural Mountains experienced rapid shifts in moisture source and summer water balance during the last deglaciation and early Holocene # Journal_Name: Journal of Quaternary Science # Volume: # Edition: # Issue: # Pages: # Report: # DOI: # Online_Resource: # Full_Citation: Cowling, O.C., Thomas, E.K., Svendsen, J.I., Mangerud, J., Haflidason, H., Regnoll, C., Brendryen, J. (2021). The Polar Ural Mountains experienced rapid shifts in moisture source and summer water balance during the last deglaciation and early Holocene. Journal of Quaternary Science. # Abstract: The Russian Arctic is an extensive region, with relatively few long-duration paleoclimate reconstructions compared to other terrestrial Arctic regions. We present a 24,000 year reconstruction of climate in the Polar Ural Mountains using n-alkanoic acid hydrogen isotopes from Lake Bolshoye Shchuchye. Major last deglaciation climate changes in the North Atlantic are present in this record, including transitions associated with the Bolling-Allerod, Younger Dryas, and Holocene. However, the magnitude of the last deglaciation isotopic shifts at Bolshoye Shchuchye are small relative to the North Atlantic, and are dwarfed by a shift to 2H-enriched values starting at 10.5k cal a BP at this site that is not present in most other records. The last deglaciation changes may be due to variations in local temperature, sea ice cover in the Barents and Kara seas, and plant community shifts impacting transpiration. The enrichment starting at 10.5k cal a BP likely records a shift towards modern climate conditions, caused by the loss of the Scandinavian Ice Sheet, increased locally sourced moisture from the Barents and Kara seas, and northward treeline migration causing enhanced transpiration. Future warming may increase summer precipitation amount in this region, with changes to local ecosystems and carbon cycling. #------------------ # Funding_Agency # Funding_Agency_Name: Norwegian Research Council # Grant: NRC 255415 #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: EAR-IF 1652274 #------------------ # Site_Information # Site_Name: Lake Bolshoye Shchuchye # Location: Europe>Eastern Europe>Russia # Northernmost_Latitude: 67.85 # Southernmost_Latitude: 67.85 # Easternmost_Longitude: 66.37 # Westernmost_Longitude: 66.37 # Elevation: 187 #------------------ # Data_Collection # Collection_Name: BolshoyeShchuchye2021d2H # Earliest_Year: 23398 # Most_Recent_Year: 1386 # Time_Unit: Cal. Year BP # Core_Length: # Notes: #------------------ # Chronology: # #------------------ # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components ( 10 components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data, additional_information) # ## depth depth,,,centimeter, , paleolimnology,,,N, Midpoint depth of the sampled interval; all sampling intervals were 1 cm in width ## age age, , , calendar year before present, , paleolimnology, , , N, plant macrofossils; accelerator mass spectrometry ## age_start age at sample start, , , calendar year before present, , paleolimnology, , , N, plant macrofossils; accelerator mass spectrometry ## age_end age at sample end, , , calendar year before present, , paleolimnology, , , N, plant macrofossils; accelerator mass spectrometry ## C20 C20 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C22 C22 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C24 C24 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C26 C26 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C28 C28 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C30 C30 n-alkanoic acid, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C21 C21 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C23 C23 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C25 C25 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C27 C27 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C29 C29 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C31 C31 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C33 C33 n-alkane, sediment, , microgram per gram, , paleolimnology, normalized, gas chromatography - flame ionization detection, N, ## C20-d2H delta 2H, C20 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C20-d2H-se delta 2H, C20 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, ## C22-d2H delta 2H, C22 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C22-d2H-se delta 2H, C22 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, ## C24-d2H delta 2H, C24 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C24-d2H-se delta 2H, C24 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, ## C26-d2H delta 2H, C26 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C26-d2H-se delta 2H, C26 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, ## C28-d2H delta 2H, C28 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C28-d2H-se delta 2H, C28 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, ## C30-d2H delta 2H, C30 n-alkanoic acid, , per mil VSMOW, , paleolimnology, corrected;averaged, continuous-flow isotope ratio mass spectrometry, N, ## C30-d2H-se delta 2H, C30 n-alkanoic acid, one standard error, per mil VSMOW, , paleolimnology, , continuous-flow isotope ratio mass spectrometry, N, # #------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header) # Missing_Values: nan # depth age age_start age_end C20 C22 C24 C26 C28 C30 C21 C23 C25 C27 C29 C31 C33 C20-d2H C20-d2H-se C22-d2H C22-d2H-se C24-d2H C24-d2H-se C26-d2H C26-d2H-se C28-d2H C28-d2H-se C30-d2H C30-d2H-se 7 1386 1481 1311 41.1 110.2 223.3 192.6 197.7 38.3 2.2 2.6 3.0 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