@article{22d52783db7d473ebfe1c7bf993efe69,
title = "Greenland-wide seasonal temperatures during the last deglaciation",
abstract = "The sensitivity of the Greenland ice sheet to climate forcing is of key importance in assessing its contribution to past and future sea level rise. Surface mass loss occurs during summer, and accounting for temperature seasonality is critical in simulating ice sheet evolution and in interpreting glacial landforms and chronologies. Ice core records constrain the timing and magnitude of climate change but are largely limited to annual mean estimates from the ice sheet interior. Here we merge ice core reconstructions with transient climate model simulations to generate Greenland-wide and seasonally resolved surface air temperature fields during the last deglaciation. Greenland summer temperatures peak in the early Holocene, consistent with records of ice core melt layers. We perform deglacial Greenland ice sheet model simulations to demonstrate that accounting for realistic temperature seasonality decreases simulated glacial ice volume, expedites the deglacial margin retreat, mutes the impact of abrupt climate warming, and gives rise to a clear Holocene ice volume minimum.",
keywords = "Greenland ice sheet, Holocene thermal maximum, ice core, last deglaciation, mass balance",
author = "C. Buizert and B.A. Keisling and J.E. Box and F. He and A.E. Carlson and G. Sinclair and R.M. DeConto",
note = "Funding Information: We gratefully acknowledge financial support from the U.S. National Science Foundation through grants ARC-1418074 (to A. E. C.), ARC-1417886 (to R. M. D.), ARC-1702920 (to C. B.), and AGS-1502990 (to F. H.); from Geocenter Danmark (to J. E. B.); and from the NOAA Climate and Global Change Postdoctoral Fellowship program, administered by the University Corporation for Atmo spheric Research (to F. H. and C. B.). We would like to acknowledge high-performance computing support from Yellowstone (ark:/85065/d7wd3xhc) provided by NCAR{\textquoteright}s Computational and Informa tion Systems Laboratory, sponsored by the National Science Foundation. This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under contract DE-AC05-00OR22725. We kindly acknowledge constructive comments by J. Briner and two other anonymous reviewers. The deglacial temperatures are available in the supporting infor mation for selected sites, on the NOAA paleoclimate data center, and from the corresponding author upon request. Publisher Copyright: {\textcopyright}2018. American Geophysical Union. All Rights Reserved.",
year = "2018",
month = feb,
day = "28",
doi = "10.1002/2017GL075601",
language = "English",
volume = "45",
pages = "1905--1914",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley",
number = "4",
}
