Database of Arctic Holocene Temperature Records McKay, N.P.; Kaufman, D.S. McKay, N.P. Kaufman, D.S. Air Temperature Reconstruction earth science/paleoclimate/paleolimnology (Arctic>LATITUDE >LONGITUDE ) The middle to late Holocene (8,200 years ago to present) in the Arctic is characterized by cooling temperatures and the regrowth and advance of glaciers. Whether this Neoglaciation was a threshold response to linear cooling, or was driven by a regional or Arctic-wide acceleration of cooling, is unknown. Here we examine the largest-yet-compiled multiproxy database of Arctic Holocene temperature change, along with model simulations, to investigate regional and Arctic-wide increases in cooling rate, the synchronicity of Neoglacial onset, and the observed and simulated rates of temperature change. We find little support for an Arctic-wide onset of Neoglacial cooling but do find intervals when regions experienced rapid increases in long-term cooling rate, both in the observations and in climate model simulations. In the model experiments, Neoglacial cooling is associated with indirectly forced millennial-scale variability in meridional heat transport superposed on the long-term decline of summer insolation. STUDY NOTES: Provided Keywords: air temperature, ice elevation NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : McKay, N.P. Investigator : Kaufman, D.S. 2018-11-09 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/25610 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/lipdfiles/ https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-RecordsUsedMetadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-metadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/prob_density/ https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/lipdfiles/ https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-RecordsUsedMetadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-metadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/prob_density/ English https://www.ncdc.noaa.gov/paleo/study/25610 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/lipdfiles/ https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-RecordsUsedMetadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/mckay2018-metadata.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/arctic/mckay2018/prob_density/ McKay, N.P., Kaufman, D.S., Routson, C.C., Erb, M.P., and Zander, P.D.2018The Onset and Rate of Holocene Neoglacial Cooling in the ArcticGeophysical Research Letters45211-1010.1029/2018GL079773 -180 60 180 90