Global 5 Million Year Sea Level, Temperature, and d18Osw Reconstructions de Boer, B.; Lourens, L.J.; van de Wal, R.S.W. de Boer, B. Lourens, L.J. van de Wal, R.S.W. Air Temperature Reconstruction Sea Level Reconstruction earth science/paleoclimate/paleoclimatic modeling (surface air temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,Continental mean surface-air Temperature anomaly of the Northern Hemisphere (40-80N) relative to present day) earth science/paleoclimate/paleoclimatic modeling (ice sheet volume,null,null,meter,null,paleoclimatic modeling,null,null,N,Total ice volume for the Greenland Ice Sheet in meters of sea level equivalent) earth science/paleoclimate/paleoclimatic modeling (age,null,null,calendar kiloyear before present,null,paleoclimatic modeling,null,null,N,null) earth science/paleoclimate/paleoclimatic modeling (ice sheet volume,null,null,square kilometer,null,paleoclimatic modeling,null,null,N,x1e6 units; Antarctic ice volume) earth science/paleoclimate/paleoclimatic modeling (ice sheet volume,null,null,meter,null,paleoclimatic modeling,null,null,N,Total ice volume for the Antarctic Ice Sheet in meters of sea level equivalent) earth science/paleoclimate/paleoclimatic modeling (ice sheet calving,null,null,gigaton per year,null,paleoclimatic modeling,null,null,N,Antarctic ice discharge towards open water) earth science/paleoclimate/paleoclimatic modeling (ice sheet volume,null,null,meter,null,paleoclimatic modeling,null,null,N,Total ice volume for the Eurasian Ice Sheet in meters of sea level equivalent) earth science/paleoclimate/paleoclimatic modeling (ice sheet volume,null,null,meter,null,paleoclimatic modeling,null,null,N,Total ice volume for the North American Ice Sheet in meters of sea level equivalent) earth science/paleoclimate/paleoclimatic modeling (delta 18O,sea water,null,per mil VPDB,null,paleoclimatic modeling,anomalized,null,N,The d18O contribution of temperature relative to present day) earth science/paleoclimate/paleoclimatic modeling (sea level,null,null,meter,null,paleoclimatic modeling,anomalized,null,N,Eustatic sea level - global average derived from ice-volume relative to present day) earth science/paleoclimate/paleoclimatic modeling (delta 18O,benthic foraminifer,null,per mil,null,paleoclimatic modeling,null,null,N,modelled benthic d18O data closely representing the LR04 stack (Lisiecki and Raymo 2005)) earth science/paleoclimate/paleoclimatic modeling (delta 18O,sea water,null,per mil VSMOW,null,paleoclimatic modeling,anomalized,null,N,the ice-volume contribution to benthic d18O (relative to present day)) earth science/paleoclimate/reconstructions (Global>LATITUDE >LONGITUDE ) Marine sediment records from the Oligocene and Miocene reveal clear 400,000-year climate cycles related to variations in orbital eccentricity. These cycles are also observed in the Plio-Pleistocene records of the global carbon cycle. However, they are absent from the Late Pleistocene ice-age record over the past 1.5 million years. Here we present a simulation of global ice volume over the past 5 million years with a coupled system of four three-dimensional ice-sheet models. Our simulation shows that the 400,000-year long eccentricity cycles of Antarctica vary coherently with d13C data during the Pleistocene, suggesting that they drove the long-term carbon cycle changes throughout the past 35 million years. The 400,000-year response of Antarctica was eventually suppressed by the dominant 100,000-year glacial cycles of the large ice sheets in the Northern Hemisphere. STUDY NOTES: A coupled system of four ice-sheet models with an innovative inverse modelling approach is used to reconstruct ice volume and temperature from benthic d18O data (LR04 stack) NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : de Boer, B. Investigator : Lourens, L.J. Investigator : van de Wal, R.S.W. 2015-12-11 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/19564 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/deboer2014/deboer2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/deboer2014/deboer2014.txt English https://www.ncdc.noaa.gov/paleo/study/19564 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/deboer2014/deboer2014.txt B. de Boer, Lucas J. Lourens, and Roderik S.W. van de Wal2014Persistent 400,000-year variability of Antarctic ice volume and the carbon cycle is revealed throughout the Plio-PleistoceneNature Communications5299910.1038/ncomms3999 http://www.nature.com/ncomms/2014/140102/ncomms3999/full/ncomms3999.html B. de Boer, R.S.W. van de Wal, L.J. Lourens, R. Bintanja, T.J. Reerink2013A continuous simulation of global ice volume over the past 1 million years with 3-D ice-sheet modelsClimate Dynamics4151365-138410.1007/s00382-012-1562-2http://link.springer.com/article/10.1007/s00382-012-1562-2/fulltext.html START YEAR: 5300000 cal yr BP * END YEAR: 0 cal yr BP -180 -90 180 90