[Parameters: Topic='CRYOSPHERE', Term='GLACIERS/ICE SHEETS', Variable_Level_1='FIRN']
Alkanes in Firn Air Samples, Antarctica and Greenland
Entry ID: NSIDC-0504

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Summary
Abstract: This data set contains ethane, propane, and n-butane measurements in firn air from the South Pole and the West Antarctic Ice Sheet (WAIS) Divide in Antarctica, and from Summit, Greenland. The WAIS Divide and South Pole samples were collected in December to January of of 2005/06 and 2008/09, respectively. The Summit firn was sampled in the summer of 2006. Analyses were conducted on a gas chromatography - mass spectrometry (GC-MS) system at the University of California, Irvine. Measurements and the associated uncertainties are reported as dry air molar mixing ratios in part per trillion (ppt). The reported measurements for each sampling depth represent a mean of multiple measurements on more than one flask in most cases. Data are available via FTP in Microsoft Excel (.xls) format.
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates   
  N: -90.0   S: -90.0   E: 0.0   W: 0.0
  N: -79.47   S: -79.47   E: 112.09   W: 112.09
  N: 72.58   S: 72.58   E: -38.38   W: -38.38

Data Set Citation
Dataset Originator/Creator: Aydin, M. and E. Saltzman
Dataset Title: Alkanes in firn air samples, Antarctica and Greenland
Dataset Release Date: 2011-11-30
Dataset Release Place: Boulder, Colorado, USA
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Online Resource: http://nsidc.org/data/nsidc-0504.html
Temporal Coverage
Start Date: 2005-12-01
Stop Date: 2006-01-31
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Location Keywords
Science Keywords
ISO Topic Category
Platform
LABORATORY Ancillary Description
FIELD INVESTIGATION Ancillary Description
Instrument
GAS CHROMATOGRAPHS Ancillary Description
MASS SPECTROMETERS Ancillary Description
Ancillary Keywords
Data Set Progress
COMPLETE
Data Center
National Snow and Ice Data Center Supplemental Info
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
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Distribution
Distribution Media: FTP
Distribution Size: 19 KB
Distribution Format: Microsoft Excel
Personnel
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
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Publications/References
Aydin, M., K. R. Verhulst, E. S. Saltzman, M. O. Battle, S. A. Montzka, D. R. Blake, Q. Tang, and M. J. Prather. 2011. Recent decreases in fossil-fuel emissions of ethane and methane derived from firn air, Nature, 476, 198-201, doi:10.1038/nature10352.

Aydin, M., M. B. Williams, and E. S. Saltzman. 2007. Feasibility of reconstructing paleoatmospheric records of selected alkanes, methyl halides, and sulfur gases from Greenland ice cores. J. Geophys. Res., 112, D07312, doi:10.1029/2006JD008027.

Battle, M. et al. 1996. Atmospheric Gas Concentrations over the Past Century Measured in Air from Firn at the South Pole. Nature 383. 231-235.
Creation and Review Dates
DIF Creation Date: 2011-11-21
Last DIF Revision Date: 2012-05-14

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