Lac Aurelie, Quebec 8,200 Year Chironomid Data and Inferred Temperature Bajolle, L.; Larocque-Tobler, I.; Gandouin, E.; Lavoie, M.; Bergeron, Y.; Ali, A.A. Bajolle, L. Larocque-Tobler, I. Gandouin, E. Lavoie, M. Bergeron, Y. Ali, A.A. Air Temperature Reconstruction earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Chironomus anthracinus) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cryptochironomus) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Endochironomus tendens) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Paracladopelma) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Phaneosectra type A) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Pseudochironomus) earth science/paleoclimate/insect|paleolimnology (identified 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(depth,null,null,centimeter,null,insect|paleolimnology,null,null,N,null) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Constempellina) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Microtendipes pedellus) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Stempelinella) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Micropsectra insignilobus) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cladotanytarsus mancus1) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsus lugens) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsus pallidicornis) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Pseudosmittia) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Thiennemanyia) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Ablabesmyia) earth science/paleoclimate/insect|paleolimnology (midge index,null,null,percent,null,insect|paleolimnology,null,null,N,Warmer) earth science/paleoclimate/insect|paleolimnology (midge index,null,null,percent,null,insect|paleolimnology,null,null,N,Oligo) earth science/paleoclimate/insect|paleolimnology (midge index,null,null,percent,null,insect|paleolimnology,null,null,N,Ratios eutro/oligo) earth science/paleoclimate/climate reconstructions|insect|paleolimnology (temperature,midge assemblage,null,degree Celsius,Aug,climate reconstructions|insect|paleolimnology,null,null,N,null) earth science/paleoclimate/insecta (Lac Aurelie>LATITUDE 50.42>LONGITUDE -74.22972) Chironomid head capsules preserved in lake sediments were used to reconstruct 8200 years of summer temperatures in the boreal forest of north-eastern Canada. Two training sets were used derived from Canadian and Eastern Canadian transfer functions. Both models reconstructed similar climate patterns, but the Canadian model provided temperatures generally 2-3C lower than the Eastern Canadian model. Three main thermal changes inferred by chironomids were: (i) the Holocene Thermal Maximum, which occurred between 8 and 5k cal a BP, with temperatures generally higher than today's, maximum temperatures between 8 and 6.5k cal a BP, and an average of + 0.9 C; (ii) the Medieval Climate Anomaly around 1.1-1.2k cal a BP with an amplitude of + 0.7 C; and (iii) a colder period reconstructed between the 14th and 19th centuries, corresponding to the Little Ice Age, with summer temperatures on average -0.5 C lower than the climate normal. For each of these three climatic events, the timing and the amplitude of changes were similar with other published regional, North American and Northern Hemisphere records. STUDY NOTES: Chironomid assemblage data and inferred temperature from lake sediments collected in Lac Aurelie, central Quebec, for the past 8,200 years. Also included is the East Canada training data set for the inferred temperature NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bajolle, L. Investigator : Larocque-Tobler, I. Investigator : Gandouin, E. Investigator : Lavoie, M. Investigator : Bergeron, Y. Investigator : Ali, A.A. 2018-06-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/24370 https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018chiro.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018train.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018cit.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018chiro.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018train.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018cit.txt English https://www.ncdc.noaa.gov/paleo/study/24370 https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018chiro.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018train.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/pq/aurelie2018cit.txt Lisa Bajolle, Isabelle Larocque-Tobler, Emmanuel Gandouin, Martin Lavoie, Yves Bergeron, Adam A. Ali2018Major postglacial summer temperature changes in the central coniferous boreal forest of Quebec (Canada) inferred using chironomid assemblagesJournal of Quaternary Science334409-42010.1002/jqs.3022https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3022 START YEAR: 8282 cal yr BP * END YEAR: -19 cal yr BP -74.22972 50.42 -74.22972 50.42