# Hinterburgsee, Switzerland 13,000 Year Chironomid-inferred July Temperature #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:15854 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/hinterburgsee2003temp.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Climate Reconstruction #-------------------- # Contribution_Date # Date: 2014-01-02 #-------------------- # Title # Study_Name: Hinterburgsee, Switzerland 13,000 Year Chironomid-inferred July Temperature #-------------------- # Investigators # Investigators: Heiri, O.; Lotter, A.F.; Hausmann, S.; Kienast, F. #-------------------- # Description_and_Notes # Description: Chironomid-inferred July temperature estimates for Hinterburgsee, Switzerland for the past ~13,000 years. # A quantitative chironomid-July air temperature inference model based on surface sediments from 81 Swiss lakes # was applied to the subfossil chironomid record of Hinterburgsee, a small subalpine lake in the northern Swiss Alps. # The chironomid inferred July air temperature estimated standard error of prediction (Root mean square) is 1.51°C. #-------------------- # Publication # Authors: Oliver Heiri, André F. Lotter, Sonja Hausmann, and Felix Kienast # Published_Date_or_Year: 2003-05-01 # Published_Title: A chironomid-based Holocene summer air temperature reconstruction from the Swiss Alps # Journal_Name: The Holocene # Volume: 13 # Edition: # Issue: 4 # Pages: 477-484 # DOI: 10.1191/0959683603hl640ft # Online_Resource: http://hol.sagepub.com/content/13/4/477.abstract # Full_Citation: # Abstract: We developed a quantitative chironomid-July air temperature inference model based on surface sediments from 81 Swiss lakes and applied it to the Holocene subfossil chironomid record of Hinterburgsee, a small subalpine lake in the northern Swiss Alps (present-day mean July air temperature of 11.3°C). After smoothing to reduce the high between-sample variability of inferred temperatures, the reconstruction indicates July air temperatures of 10.4- 10.9°C at the end of the Younger Dryas, of 11.9-12.8°C during the early and mid-Holocene (11500-4000 cal. BP), and slightly lower temperatures of 11.5-12.0°C during the late Holocene (3500-1000 cal. BP). A warming trend inferred for the past millennium is most likely an artifact of human impact on Hinterburgsee's chironomid fauna, rather than a genuine temperature signal. The most prominent climatological events during the Holocene were two periods of lower temperatures at c. 10700-10500 cal. BP and 8200-7700 cal. BP and an abrupt shift to a cooler late-Holocene climate around 4000-3700 cal. BP. Although the chironomid-inferred climate signals were within the prediction error of the model (1.51°C), major inferred temperature changes agree well with other northern and central European climate reconstructions and underline the potential of subfossil chironomid analysis to reconstruct even the moderate climatic changes within the Holocene. #------------------ # Funding_Agency # Funding_Agency_Name: Swiss Federal Office of Education and Science # Grant: 97.0117 #------------------ # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: 5001-044600 #------------------ # Site_Information # Site_Name: Hinterburgsee # Location: Europe>Western Europe>Switzerland # Country: Switzerland # Northernmost_Latitude: 46.7186 # Southernmost_Latitude: 46.7186 # Easternmost_Longitude: 8.0686 # Westernmost_Longitude: 8.0686 # Elevation: 1515 m #------------------ # Data_Collection # Collection_Name: Hinterburgsee2003temp # Earliest_Year: 12901 # Most_Recent_Year: -40.9 # Time_Unit: Cal Year BP # Core_Length: 10.83 m # Notes: #------------------ # Chronology: # # Ages >11500 cal yr BP extrapolated. Reconstruction <2000 cal yr BP affected by human impact and considered unreliable. # #---------------- # Variables # # Data variables follow (have no #) # 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) # # ## depth_cm depth, , , cm, , , , ,N ## age_calBP age, , , calendar years before present, , , , ,N ## julT_chir July air temperature, , , degrees C, July, lake sediment, raw unsmoothed data, chironmid transfer function based reconstruction,N ## julT_chir_err July air temperature error, , , degrees C, July, lake sediment, raw unsmoothed data, chironmid transfer function reconstruction error,N #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: depth_cm age_calBP julT_chir julT_chir_err 0.7 -40.9 12.0418 1.51 12.7 170 12.2686 1.51 18.7 276 12.7646 1.51 34.7 564 12.7812 1.51 49.8 847 11.551 1.51 66.8 1181 11.7359 1.51 77.6 1403 11.9473 1.51 87.6 1594 11.4851 1.51 99.6 1880 11.3992 1.51 111.6 2153 11.8471 1.51 122.6 2410 11.4041 1.51 139.6 2818 11.9409 1.51 151 3098 11.9754 1.51 162 3371 11.762 1.51 169 3547 10.6643 1.51 177 3748 11.7579 1.51 185 3950 12.0928 1.51 192 4127 12.0657 1.51 203 4405 12.1648 1.51 212 4633 11.9578 1.51 220 4834 13.2828 1.51 226 4984 12.0245 1.51 236 5232 12.3864 1.51 242 5379 12.1988 1.51 250 5574 12.2063 1.51 258 5766 12.1785 1.51 270 6048 11.4888 1.51 281 6300 13.5028 1.51 288 6456 11.921 1.51 300 6713 12.6691 1.51 319.2 7107 11.1673 1.51 329.2 7300 12.7177 1.51 339.2 7485 10.5615 1.51 345.2 7592 13.817 1.51 352.2 7712 11.1424 1.51 361.2 7862 10.6126 1.51 381.4 8174 11.5751 1.51 390.4 8305 11.3796 1.51 405.4 8493 12.4921 1.51 426.4 8766 12.6618 1.51 440.4 8925 11.8136 1.51 454.4 9074 11.7984 1.51 470.4 9234 12.0529 1.51 482.4 9347 12.7786 1.51 488.4 9401 10.8969 1.51 519.4 9664 12.8296 1.51 533 9771 12.2557 1.51 565.1 10010 11.416 1.51 596.1 10224 12.359 1.51 620.5 10383 11.9714 1.51 637.5 10489 10.4273 1.51 672.6 10699 11.0675 1.51 699.4 10853 11.8189 1.51 725.4 10999 12.1684 1.51 774 11280 12.0165 1.51 801.8 11410 11.698 1.51 822.4 11519 10.6037 1.51 879.4 11820 11.06 1.51 931.4 12096 10.1353 1.51 972.4 12313 10.3712 1.51 1008.1 12503 11.0324 1.51 1083.4 12901 10.8497 1.51