Methyl Chloride, Methyl Bromide, and Carbonyl Sulfide in Deep Antarctic Ice Cores
Entry ID: saltzman_0636953

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Summary
Abstract: This award supports a project to measure methyl chloride, methyl bromide, and carbonyl sulfide in air extracted from Antarctic ice cores.

Purpose: Previous measurements in firn air and shallow ice cores suggest that the ice archive contains paleo-atmospheric signals for these gases. The goal of this study is to extend these records throughout the Holocene and into the last Glacial period to examine the behavior of these trace gases over longer time scales and a wider range of climatic conditions. These studies are exploratory, and both the stability of these trace gases and the extent to which they may be impacted by in situ processes will be assessed. This project will involve sampling and analyzing archived ice core samples from the South Pole, Siple Dome, Taylor Dome, Byrd, and Vostok ice cores. The ice core samples will be analyzed by dry extraction, with gas chromatography/mass spectrometry with isotope dilution. The ice core measurements will generate new information about the range of natural variability of these trace gases in the atmosphere.

Related URL
Link: VIEW PROFESSIONAL HOME PAGE
Description: Professor, Earth System Science
School of Physical Sciences


Link: VIEW PROJECT HOME PAGE
Description: Department of Earth System Science


Link: VIEW RELATED INFORMATION
Description: An analysis of methyl chloride (CH3Cl) and methyl bromide (CH3Br) in Antarctic ice core samples.


Geographic Coverage
 N: -80.01667 S: -80.01667  E: 119.51667  W: 119.51667
 Min Altitude: 1530 M  Max Altitude: 1530 M  Max Depth: 2164 M
 N: -72.46667 S: -72.46667  E: 106.8  W: 106.8
 Max Depth: 3623 M
 N: -81.664 S: -81.664  E: 148.8  W: 148.8
 Max Altitude: 615 M
 N: -74.666 S: -74.666  E: 158.0  W: 158.0
 Max Altitude: 2440 M

Location Keywords
GEOGRAPHIC REGION > POLAR
CONTINENT > ANTARCTICA


Science Keywords
PALEOCLIMATE >ICE CORE RECORDS    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >HALOCARBONS AND HALOGENS >METHYL BROMIDE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >HALOCARBONS AND HALOGENS >METHYL CHLORIDE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >CARBONYL SULFIDE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
LABORATORY    [Information]


Instrument
GAS CHROMATOGRAPHS    [Information]
MASS SPECTROMETERS    [Information]


Project
NSF/OPP >Office of Polar Programs, National Science Foundation    [Information]


Keywords
Methyl Chloride
Methyl Bromide
Carbonyl Sulfide
Ice Core
Antarctic
trace gases
Atmospheric chemistry
biogeochemical


Data Set Progress
IN WORK


Originating Center
University of California-Irvine School of Physical Sciences


Data Center
NSIDC Antarctic Glaciological Data Center    [Information]
Data Center URL: http://nsidc.org/agdc/

Data Center Personnel
Name: NSIDC AGDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Personnel
ERIC SALTZMAN
Role: INVESTIGATOR
Phone: (949) 824-3936
Fax: (949) 824-3874
Email: esaltzma at uci.edu
Contact Address:
Department of Earth System Science
University of California, Irvine
City: Irvine
Province or State: CA
Postal Code: 92697-3100
Country: USA


MURAT AYDIN
Role: INVESTIGATOR
Phone: (949) 824-6174, 5540
Email: maydin at uci.edu
Contact Address:
University of California, Irvine
Earth System Science
City: Irvine
Province or State: CA
Postal Code: 92697-3100
Country: USA


NSIDC AGDC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Publications/References
E.S. Saltzman, M. Aydin, C. Tatum, and M.B. Williams. "2,000 year record of atmospheric methyl bromide from a South Pole ice core," Journal of Geophysical Research, v.113, 2008, p. D05304.

M. Aydin, M.B. Williams, C. Tatum, and E.S. Saltzman. "Carbonyl sulfide in air extracted froma South Pole ice core: a 2,000 year record," Atmospheric Chemistry and Physics, v.8, 2008, p. 7533.

Saltzman, E. S.; Aydin, M.; Williams, M. B.; Verhulst, K.; Gun, B.. "Methyl chloride in a deep ice core from Siple Dome, Antarctica," Geophysical Research Letters, v.36, 2009, p. L038.

Creation and Review Dates
DIF Creation Date: 2012-06-13
Last DIF Revision Date: 2012-06-19

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