noaa-recon-19564 Global 5 Million Year Sea Level, Temperature, and d18Osw Reconstructions de Boer, B.; Lourens, L.J.; van de Wal, R.S.W. Global 5 Million Year Sea Level, Temperature, and d18Osw Reconstructions 2015-12-11 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19564 Investigator B. de Boer Investigator L.J. Lourens Investigator R.S.W. van de Wal 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 sea level geoscientificInformation Air Temperature Reconstruction Sea Level Reconstruction 5300000 cal yr BP 0 cal yr BP Complete -90 90 -180 180 Geographic Region Global Global>LATITUDE >LONGITUDE None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII B. de Boer, Lucas J. Lourens, and Roderik S.W. van de Wal 2014 Nature Communications 5 2999 10.1038/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. Reerink 2013 Climate Dynamics 41 5 1365-1384 10.1007/s00382-012-1562-2 http://link.springer.com/article/10.1007/s00382-012-1562-2/fulltext.html

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)

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/deboer2014/deboer2014.txt Data File; Global Sea Level, Ice Volume, Temperature, and d18Osw Reconstructions USA/NOAA DIF Version 9.8.4 2019-01-30 2019-01-30