GISP2 Ice Core 11,000 Year Methanesulfonic Acid (MSA) Data Saltzman, E.S.; Whung, P.-Y.; Mayewski, P.A. Saltzman, E.S. Whung, P.-Y. Mayewski, P.A. earth science/paleoclimate/ice cores (depth at sample start,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (methanesulfonic acid,bulk ice,null,parts per billion,null,ice cores,null,ion chromatography,N,null) earth science/paleoclimate/ice cores (depth at sample end,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (ice age at sample end,null,null,calendar year before present,null,ice cores,null,null,N,null) earth science/paleoclimate/ice core (GISP2>LATITUDE 72.6>LONGITUDE -38.5) In this paper we present measurements of methanesulfonate in the Greenland Ice Sheet Project 2 (GISP2) ice core. Methanesulfonate is an atmospheric oxidation product of dimethylsulfide. The GISP2 methanesulfonate record contains information about the atmospheric loading of biogenic sulfur over the past 110 kyr and its relationship to climate change. The GISP2 data set supports the inferences made from the Renland ice core from Greenland that the glacial atmosphere over Greenland had reduced concentrations of biogenic sulfur compared with the present day [Hansson and Saltzman, 1993]. We conclude that the flux of biogenic sulfur from the North Atlantic Ocean must have been lower during glacial times and speculate that this decrease may have been related to differences in phytoplankton speciation. The data suggest that changes in direct radiative forcing from biogenic sulfur aerosols would act as negative feedback to the glacial/interglacial climate cycles in this region. STUDY NOTES: Methanesulfonic acid (MSA) concentrations as measured in the GISP2 D and F cores. MSA concentrations were determined by chemically suppressed ion chromatography. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Saltzman, E.S. Investigator : Whung, P.-Y. Investigator : Mayewski, P.A. 1997-11-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17804 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacoref.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacored.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacoref.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacored.txt English https://www.ncdc.noaa.gov/paleo/study/17804 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacoref.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacored.txt E. S. Saltzman, P.‐Y. Whung, P. A. Mayewski1997Methanesulfonate in the Greenland Ice Sheet Project 2 Ice CoreJournal of Geophysical Research: Oceans102C1226649-2665710.1029/97JC01377http://onlinelibrary.wiley.com/enhanced/doi/10.1029/97JC01377/ START YEAR: 11240 cal yr BP * END YEAR: 254 cal yr BP -38.5 72.6 -38.5 72.6