noaa-icecore-17804 GISP2 Ice Core 11,000 Year Methanesulfonic Acid (MSA) Data Saltzman, E.S.; Whung, P.-Y.; Mayewski, P.A. GISP2 Ice Core 11,000 Year Methanesulfonic Acid (MSA) Data 1997-11-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/17804 Investigator E.S. Saltzman Investigator P.-Y. Whung Investigator P.A. Mayewski 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 chemistry geoscientificInformation 11240 cal yr BP 254 cal yr BP Complete 72.6 72.6 -38.5 -38.5 3200 3200 Continent North America Greenland GISP2>LATITUDE 72.6>LONGITUDE -38.5 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 E. S. Saltzman, P.‐Y. Whung, P. A. Mayewski 1997 Journal of Geophysical Research: Oceans 102 C12 26649-26657 10.1029/97JC01377 http://onlinelibrary.wiley.com/enhanced/doi/10.1029/97JC01377/

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.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacoref.txt Data File; GISP2 F Core MSA Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/msacored.txt Data File; GISP2 D Core MSA Data USA/NOAA DIF Version 9.8.4 2019-05-06 2019-05-06