Greenland 22,000 Year Seasonal Temperature Reconstructions Buizert, C.; Keisling, B.A.; Box, J.E.; He, F.; Carlson, A.E.; Sinclair, G.; DeConto, R.M. Buizert, C. Keisling, B.A. Box, J.E. He, F. Carlson, A.E. Sinclair, G. DeConto, R.M. Air Temperature Reconstruction earth science/paleoclimate/climate reconstructions|ice cores (precipitation,null,null,meter per second,monthly,climate reconstructions|ice cores,null,null,N,Accumulation rate in water equivalent) earth science/paleoclimate/climate reconstructions|ice cores (age,null,null,null,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (age,null,null,calendar year before present,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (surface air temperature,null,null,kelvin,monthly,climate reconstructions|ice cores,null,null,N,Surface Air Temperature at 2m height) earth science/paleoclimate/climate reconstructions|ice cores (longitude,null,null,degree east,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (latitude,null,null,degree north,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (ice sheet elevation,null,null,meter,null,climate reconstructions|ice cores,null,null,N,Digital Elevation Model) earth science/paleoclimate/reconstructions (Greenland>LATITUDE >LONGITUDE ) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Buizert, C. Investigator : Keisling, B.A. Investigator : Box, J.E. Investigator : He, F. Investigator : Carlson, A.E. Investigator : Sinclair, G. Investigator : DeConto, R.M. 2018-02-21 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/23430 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/buizert2018/ https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/buizert2018/ English https://www.ncdc.noaa.gov/paleo/study/23430 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/buizert2018/ C. Buizert, B.A. Keisling, J.E. Box, F. He, A.E. Carlson, G. Sinclair, R.M. DeConto2018Greenland-Wide Seasonal Temperatures During the Last DeglaciationGeophysical Research Letters10.1002/2017GL075601http://onlinelibrary.wiley.com/wol1/doi/10.1002/2017GL075601/full START YEAR: 22000 cal yr BP * END YEAR: -60 cal yr BP -60 60 -20 82