Yukon 17KYr Midge-Inferred July Temperature Kurek, J.; Cwynar, L.C.; Vermaire, J.C. Kurek, J. Cwynar, L.C. Vermaire, J.C. Air Temperature Reconstruction PAGES 2k Network PAGES Arctic 2k earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Stempellinella/Zavrelia) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Procladius sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Corynocera oliveri) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Zalutschia sp. 2) earth science/paleoclimate/climate reconstructions|insect|paleolimnology (depth,null,null,centimeter,null,climate reconstructions|insect|paleolimnology,null,null,N,null) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Parlind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Parakiefferiella nigra) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Endochironomus sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Stichtochironomus sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,CB ind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Monodiamesa sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,PsecindS) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Zalutschia sp. 1) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Zalutschia sp. 3) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Chirind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Crypind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Glyptotendipes sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Protanypus sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Cricotopus/Orthocladius) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Limnophyes sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Pseudosmittia/Smittia) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Metrind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Tany chi) earth science/paleoclimate/climate reconstructions|insect|paleolimnology (surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|insect|paleolimnology (surface air temperature,midge assemblage,unspecified margin of error,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,null,N,null) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Corynoneura/Thienemanniella) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Cyph&HP) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Cladotanytarsus mancus) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Constempellina sp.) earth science/paleoclimate/climate reconstructions|insect|paleolimnology (age,null,null,calendar year before present,null,climate reconstructions|insect|paleolimnology,null,null,N,null) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Mesocricotopus sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Dicrotendipes sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Polypedilum sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Psedind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Hydrobaenus/Oliveridia) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Microtendipes sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Paracladius sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Corynocera ambigua) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Pentaneurini) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Heterotrissocladius sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Nanocladius sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Parakiefferiella triquetra) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Parakiefferiella sp. B) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Psecind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Psectrocladius sp. E) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Synoind) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Sergentia sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Tanytarsina) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Micropsectra sp.) earth science/paleoclimate/insect|paleolimnology (identified midge,null,null,percent,null,insect|paleolimnology,raw,null,N,Orthocladius sp. 2) earth science/paleoclimate/reconstructions earth science/paleoclimate/reconstructions (Hanging Lake (HANGING)>LATITUDE 68.355787>LONGITUDE -138.359613) The late Quaternary paleoclimate of eastern Beringia has primarily been studied by drawing qualitative inferences from vegetation shifts. To quantitatively reconstruct summer temperatures, we analyzed lake sediments for fossil chironomids, and additionally we analyzed the sediments for fossil pollen and organic carbon content. A comparison with the d18O record from Greenland indicates that the general climatic development of the region throughout the last glaciation– Holocene transition differed from that of the North Atlantic region. Between ~17 and 15 ka, mean July air temperature was on average 5°C colder than modern, albeit a period of near-modern temperature at ~16.5 ka. Total pollen accumulation rates ranged between ~180 and 1200 grains cm-2 yr-1. At ~15 ka, approximately coeval with the Bølling interstadial, temperatures again reached modern values. At ~14 ka, nearly 1000 yr after warming began, Betula pollen percentages increased substantially and mark the transition to shrub-dominated pollen contributors. Chironomid-based inferences suggest no evidence of the Younger Dryas stade and only subtle evidence of an early Holocene thermal maximum, as temperatures from ~15 ka to the late Holocene were relatively stable. The most recognizable climatic oscillation of the Holocene occurred from ~4.5 to 2 ka. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Kurek, J. Investigator : Cwynar, L.C. Investigator : Vermaire, J.C. 2009-01-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8705 https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.xls https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.xls English https://www.ncdc.noaa.gov/paleo/study/8705 https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.txt https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/canada/yt/hanging2009.xls Kurek, J., L.C. Cwynar, and J.C. Vermaire. 2009. A late Quaternary paleotemperature record from Hanging Lake, northern Yukon Territory, eastern Beringia. Quaternary Research, Vol. 72, pp. 246-257. doi:10.1016/j.yqres.2009.04.007 START YEAR: 17046 cal yr BP * END YEAR: 0 cal yr BP -138.359613 68.355787 -138.359613 68.355787