Science Keywords>ATMOSPHERE
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Ethane, propane, and n-butane firn-air data
Entry ID:
Aydin_0739598
Summary
Abstract:
The data file contains ethane, propane, and n-butane measurements in firn air from two Antarctic sites (South Pole and WAIS-D) and from Summit, Greenland. The WAIS-D and South Pole samples were collected in Dec-Jan of 05/06 and 08/09, respectively. The Summit firn was sampled in the summer of 2006. All analyses were conducted on a GC-MS system at University of California, Irvine (see Aydin et al., JGR, 2007 for details). All 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. We report 2 s.e. of the mean as the uncertainty. Ethane data were published by Aydin et al. (Nature, 2011).
Purpose: The data can be used to study changes in ethane, propane, and n-butane levels in the polar atmosphere during the 20th century but requires a separate firn-air modeling effort for each site. The mean age of the firn air at any given depth varies from site to site, and data from similar depths are necessarily contemporaneous.
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Data Set Citation
Dataset Originator/Creator:
Murat Aydin
Dataset Title:
Ethane, propane, and n-butane measurements in firn-air
Data Presentation Form:
Excel file
Other Citation Details:
Aydin et al., Nature 476, 198-201, 2011
Temporal Coverage
Start Date:
2001-01-01
Stop Date:
2010-12-31
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Distribution
Distribution Media:
Online
Fees:
No fees
Personnel
Role:
SERF AUTHOR
Phone:
(301) 614-6898
Fax:
301-614-5268
Email:
Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
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