Holocene temperature history of northwest Greenland – With new ice cap constraints and chironomid assemblages from Deltasø

Autor: G. E. Lasher, Meredith A. Kelly, A. Pfeiffer, G. C. Schellinger, Erich C. Osterberg, Joshua D. Landis, Yarrow Axford, Donna R. Francis, E. Thompson

Publikováno v: Quaternary Science Reviews. 215:160-172

Arctic temperature shifts drive changes in carbon cycling, sea ice extent and Greenland Ice Sheet mass balance, all of which have global ramifications. Paleoclimate data from past warm periods provide a unique means for assessing the sensitivity of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ebf1eab88913d3950490b2d24a56de1
https://doi.org/10.1016/j.quascirev.2019.05.011

Timing and magnitude of early to middle Holocene warming in East Greenland inferred from chironomids

Autor: Peter G. Langdon, Thomas V. Lowell, Yarrow Axford, Donna R. Francis, Laura B. Levy, Brenda L. Hall, Meredith A. Kelly

Publikováno v: Axford, Y L, Levy, L B, Kelly, M A, Francis, D R, Hall, B L, Langdon, P G & Lowell, T V 2017, ' Timing and magnitude of early to middle Holocene warming in East Greenland inferred from chironomids ', Boreas, vol. 46, no. 4, pp. 678–687 . https://doi.org/10.1111/bor.12247

Much of Greenland experienced summers warmer than present in parts of the early to middle Holocene, during a precession-driven positive anomaly in summer insolation. However, the magnitude of that warmth remains poorly known, and its timing and spati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae0f1044cfa6a07fbe9893f930834ee8
https://pure.au.dk/portal/da/publications/timing-and-magnitude-of-early-to-middle-holocene-warming-in-east-greenland-inferred-from-chironomids(7149936e-d3f7-4471-8a6f-cabdf99acd38).html

A 2000-yr-long multi-proxy lacustrine record from eastern Baffin Island, Arctic Canada reveals first millennium AD cold period

Autor: Jason P. Briner, Gifford H. Miller, Ian R. Walker, Yarrow Axford, Donna R. Francis, Elizabeth K. Thomas

Publikováno v: Quaternary Research. 75:491-500

We generate a multi-proxy sub-centennial-scale reconstruction of environmental change during the past two millennia from Itilliq Lake, Baffin Island, Arctic Canada. Our reconstruction arises from a finely subsectioned 210Pb- and 14C-dated surface sed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::697c9778d253e18c69dc44c2f230afc9
https://doi.org/10.1016/j.yqres.2011.03.003

Paleoecological evidence for abrupt cold reversals during peak Holocene warmth on Baffin Island, Arctic Canada

Autor: Jason P. Briner, Yarrow Axford, Gifford H. Miller, Donna R. Francis

Publikováno v: Quaternary Research. 71:142-149

A continuous record of insect (Chironomidae) remains preserved in lake sediments is used to infer temperature changes at a small lake in Arctic Canada through the Holocene. Early Holocene summers at the study site were characterized by more thermophi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a45226f80dcbc2c317ab4124b138925
https://doi.org/10.1016/j.yqres.2008.09.006

A protocol for preparing subfossil chironomid head capsules (Diptera: Chironomidae) for stable isotope analysis in paleoclimate reconstruction and considerations of contamination sources

Autor: Diane M. O'Brien, Matthew J. Wooller, Yiming Wang, Donna R. Francis

Publikováno v: Journal of Paleolimnology. 40:771-781

Several techniques are available to examine the isotopic composition of historic lake waters, providing data that can subsequently be used to examine environmental changes. A recently-developed technique is the stable oxygen isotope analysis of subfo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d748b183ac345d9c7327845744c98f0a
https://doi.org/10.1007/s10933-008-9197-3