noaa-icecore-17843 GRIP Ice Core 386 KYr Ion Concentrations Data De Angelis, M.; Steffensen, J.P.; Legrand, M.; Clausen, H.B.; Hammer, C.U. GRIP Ice Core 386 KYr Ion Concentrations Data 1997-11-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/17843 Investigator M. De Angelis Investigator J.P. Steffensen Investigator M. Legrand Investigator H.B. Clausen Investigator C.U. Hammer earth science paleoclimate ice cores fluoride,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores oxalate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores non-sea-salt sulfate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores non-sea-salt sulfate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores methanesulfonic acid,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores sulfate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores potassium,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores magnesium,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores chloride,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores chloride,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores nitrate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores sulfate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores sodium,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores ammonium,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores magnesium,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores calcium,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores acetate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores organic compound index,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,glycolate plus propylate earth science paleoclimate ice cores ammonium,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores ice age,null,null,calendar year before present,null,ice cores,null,null,N,null earth science paleoclimate ice cores layer thickness,bulk ice,null,meter,null,ice cores,null,null,N,null earth science paleoclimate ice cores nitrate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores potassium,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores accumulation rate,bulk ice,null,gram per square centimeter per year,null,ice cores,null,null,N,null earth science paleoclimate ice cores calcium,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores acetate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores formate,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores depth,null,null,meter,null,ice cores,null,null,N,null earth science paleoclimate ice cores formate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores methanesulfonic acid,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores organic compound index,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,glycolate plus propylate earth science paleoclimate ice cores fluoride,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores sodium,bulk ice,null,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores oxalate,bulk ice,one standard deviation,parts per million,null,ice cores,null,ion chromatography,N,null earth science paleoclimate ice cores delta 18O,bulk ice,null,per mil SMOW,null,ice cores,null,null,N,null earth science paleoclimate ice core chemistry geoscientificInformation 386373 cal yr BP 329 cal yr BP Complete 72.58 72.58 -37.63 -37.63 Continent North America Greenland GRIP>LATITUDE 72.58>LONGITUDE -37.63 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 M. De Angelis, J. P. Steffensen, M. Legrand, H. Clausen, C. Hammer 1997 Journal of Geophysical Research: Oceans 102 C12 26681-26698 10.1029/97JC01298 http://onlinelibrary.wiley.com/enhanced/doi/10.1029/97JC01298/

Ion chromatography data of Ca, Mg, Cl and Ca and Coulter counter particle measurements are used to study the cycle of marine and continental primary aerosol reaching Greenland in relation to climatic changes over the last 150 kyr. A detailed comparison between Greenland (Dome Summit) and Antarctic (Vostok) records provides new insight on a potential link between northern and southern patterns. Ca is a good indicator of continental input and is mainly emitted as CaCO3. An attempt is made to estimate the contribution of aluminosilicates using the concentration of insoluble particles greater than 0.5 um in diameter. The relative abundance of non-sea-salt Mg and Ca and of aluminosilicate shows that the calcium content of continental background aerosol over Greenland was much higher during the glacial age. The neutralization capacity of carbonaceous aerosol is estimated. The inverse relationship between d18O and continental input as well as the response of this input to the rapid climatic variations that have occurred during the second part of the glacial age are discussed in terms of source and transport modification in relation to the presence and the extent of the great Laurentide ice cap. The corresponding Vostok profiles strongly suggest that some of the phenomena observed at high northern latitudes are of global concern. The marine component of Na (Nam) is a good tracer of sea-salt aerosol. Similarly to continental input, it shows an inverse but more linear relationship with d18O. The sensitivity of Greenland and Antarctic marine input to climate variations of small and large amplitude is compared, and a corresponding estimation is made for the aeolian contribution. The respective influence of atmospheric circulation and the water vapor cycle is discussed. The chlorine to marine sodium weight ratio increases with temperature from values very close to the bulk seawater ratio during the last glacial maximum (18-20 kyr B.P.) to values significantly higher during the Holocene and warm Eemian. The corresponding excess of chloride (HCl) is discussed in terms of atmospheric transport, taking into account the role of atmospheric acidity on sea-salt fractionation processes. Owing to postdepositional phenomena, similar Vostok data must be considered cautiously. Nevertheless, aerosol fractionation seems to have been much more important over the Vostok site, except during glacial extrema. STUDY NOTES: Ion data from the GRIP ice core, as well as organic acids, oxygen isotopes and layer thickness.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/chem/gripion.txt Data File; GRIP Ion Concentrations USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11