GRIP Ice Core 386 KYr Ion Concentrations Data De Angelis, M.; Steffensen, J.P.; Legrand, M.; Clausen, H.B.; Hammer, C.U. De Angelis, M. Steffensen, J.P. Legrand, M. Clausen, H.B. Hammer, C.U. 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 (GRIP>LATITUDE 72.58>LONGITUDE -37.63) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : De Angelis, M. Investigator : Steffensen, J.P. Investigator : Legrand, M. Investigator : Clausen, H.B. Investigator : Hammer, C.U. 1997-11-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17843 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/chem/gripion.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/chem/gripion.txt English https://www.ncdc.noaa.gov/paleo/study/17843 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/chem/gripion.txt M. De Angelis, J. P. Steffensen, M. Legrand, H. Clausen, C. Hammer1997Primary aerosol (sea salt and soil dust) deposited in Greenland ice during the last climatic cycle: Comparison with east Antarctic recordsJournal of Geophysical Research: Oceans102C1226681-2669810.1029/97JC01298http://onlinelibrary.wiley.com/enhanced/doi/10.1029/97JC01298/ START YEAR: 386373 cal yr BP * END YEAR: 329 cal yr BP -37.63 72.58 -37.63 72.58