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Antarctic Ice Cores: Methyl Chloride and Methyl Bromide
Entry ID: NSIDC-0313

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Abstract: This data set is an analysis of methyl chloride (CH3Cl) and methyl bromide (CH3Br) in Antarctic ice core samples. Investigators reported mixing ratios of methyl chloride gas extracted from samples taken from the South Pole Remote Earth Science and Seismological Observatory (SPRESSO) core, drilled as part of the International Trans Antarctic Science Expedition (ITASE). This data covers an age range of 2159 - 140 years before present (Y.B.P.) where the year 2000 was used as present. Investigators analyzed trace gases in ice core samples from Siple Dome, West Antarctica (dry-drilled C core and deep, fluid-drilled A core) and from South Pole, Antarctica (300 m dry drilled SPRESSO core). Data are available in Microsoft Excel format and are available via FTP.
Related URL
Description: Documentation

Description: FTP
Geographic Coverage
Spatial coordinates   
  N: -89.93   S: -89.93   E: -144.39   W: -144.39

Data Set Citation
Dataset Originator/Creator: Saltzman, E., M. Aydin, M. Williams, and C. Tatum.
Dataset Title: Antarctic Ice Cores: Methyl Chloride and Methyl Bromide
Dataset Series Name: NSIDC-0313
Dataset Release Date: 2007-11-10
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Version: 1
Online Resource:
Location Keywords
Data Set Progress
Data Center
NSIDC Antarctic Glaciological Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution Media: FTP
Distribution Size: 70 KB
Distribution Format: Microsoft Excel
Contact Address:
3325 Croul Hall
Department of Earth System Science
University of California, Irvine
City: Irvine
Province or State: California
Postal Code: 92697
Country: USA
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M.B. Williams, M. Aydin, C. Tatum and E.S. Saltzman. A 2000 Year Atmospheric History of Methyl Chloride from a South Pole Ice Core: Evidence for Climate Controlled Variability, Geophysical Research Letters 34,doi:10.1029/2006GL029142 Aydin, M., E. S. Saltzman, W. J. De Bruyn, S. A. Montzka, J. H. Butler, and M. Battle. 2004. Atmospheric variability of methyl chloride over the last 300 years from ... View entire text
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Creation and Review Dates
DIF Creation Date: 2007-11-10
Last DIF Revision Date: 2017-01-13
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