noaa-lake-13094 Trout Lake, Yukon 14,400 Year Midge-Inferred July Temperature Irvine, F.; Cwynar, L.C.; Vermaire, J.C.; Rees, A.B.H. Trout Lake, Yukon 14,400 Year Midge-Inferred July Temperature 2012-06-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/13094 Investigator F. Irvine Investigator L.C. Cwynar Investigator J.C. Vermaire Investigator A.B.H. Rees earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Zalutschia sp. Type A earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cryptochironomus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Endochironomus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Microtendipes sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Parachironomus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsus chinyensis earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Heterotrissocladius sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Metriocnemus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius (septentrionalis) earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Stichtochironomus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsina earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Micropsectra sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Limnophyes sp. earth science paleoclimate insect|paleolimnology age,null,null,calendar kiloyear before present,null,insect|paleolimnology,null,null,N,null earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Pentaneurini earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Procladius sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Pseudodiamesa sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cricotopus/Orthocladius earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Orthocladiinae sp. 2 earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Zalutschia sp. Type B earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Glyptotendipes sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cladotanytarsus mancus type earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,First instar chironomini earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Corynoneura/Thienemanniella earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Hydrobaenus/Oliveridia earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Corynocera oliveri type earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Chaoboridae earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Parakiefferiella bathophila type earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Parakiefferiella nigra type earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius sp. (Allo. & Meso.) earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius sp. (Psectrocladius) earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius sp. (Mono.) earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Pseudosmittia/Smittia earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Sergentia sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Protanypus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Monodiamesa sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Paracladius sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Parakiefferiella sp.B earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Chironomus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cyphomella/Harnischia/Paraclado. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Polypedilum sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Stempellinella/Zavrelia earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Einfeldia sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Dicrotendipes sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Ceratopogonidae earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Indeterminable earth science paleoclimate insect|paleolimnology depth,null,null,centimeter,null,insect|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Mesocricotopus sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Parakiefferiella triquetra type earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Zalutschia zalutschicola earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cladopelma sp. earth science paleoclimate insect|paleolimnology identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Unknown earth science paleoclimate paleolimnology reconstruction earth science paleoclimate paleolimnology population abundance earth science paleoclimate paleolimnology physical properties geoscientificInformation PAGES 2k Network PAGES Arctic 2k 14400 cal yr BP 0 cal yr BP Complete 68.828 68.828 -138.75 -138.75 150 150 Continent North America Canada Yukon Territory Trout Lake Yukon>LATITUDE 68.828>LONGITUDE -138.75 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Irvine, F., L.C. Cwynar, J.C. Vermaire, and A.B.H. Rees. 2012. Midge-inferred temperature reconstructions and vegetation change over the last ~15,000 years from Trout Lake, northern Yukon Territory, eastern Beringia. Journal of Paleolimnology, Vol. 48, No. 1, June 2012, pp. 133-146. DOI: 10.1007/s10933-012-9612-7

Two cores from Trout Lake, northern Yukon, yielded quantitative estimates of summer air temperatures using fossil midge larvae. Warming began around 14,400 cal yr BP, with inferred mean July air temperatures reaching values warmer than present by 12,800 cal yr BP. A 1°C cooling from 12,200 to 11,200 cal yr BP closely corresponds with the Younger Dryas chronozone. A broad temperature maximum occurred between 10,800 and 9,800 cal yr BP, with mean July air temperature about 2.2 °C warmer than present. This represents an early Holocene thermal maximum and coincides with increased organic content of the sediment. Both the shallow- and deep-water cores show similar temperature trends for their overlapping periods. The inferred rise in mean July air temperature at 14,200 cal yr BP coincides with a shift in vegetation from an herb- to shrub- dominated landscape. In contrast, the increase in Alnus pollen at 6,400 cal yr BP does not coincide with a change in temperature, but may be a response to a rise in precipitation. STUDY NOTES: Fossil midge larval data and inferred mean July air temperature, plus pollen data and Loss-on-Ignition data from Trout Lake, northern Yukon covering the past 14,400 years. Trout Lake, Yukon: 68.828°N, 138.75°W, 150m elevation, ~9m water depth.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/trout2012.xls GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/trout2012.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11