On Friday, 06 November 2015 from 8:00 a.m. to 5:00 p.m. (USA Mountain Time), our FTP services, which also includes automated data requests from services such as Polaris and the GLAS Subsetter, will be unavailable because of system maintenance. We apologize for any inconvenience this may cause you.
authors and credits
J.P. Severinghaus, Scripps Institution of Oceanography, University of California at San Diego
A. Grachev, Scripps Institution of Oceanography, University of California at San Diego
M. Battle, Bowdoin College, Brunswick, Maine
If you use these data in a published paper or public presentation, please cite the following publication:
Severinghaus, J.P., A. Grachev, and M. Battle. 2001. Thermal fractionation of air in polar firn by seasonal temperature gradients. Geochemistry, Geophysics, Geosystems [online journal] 2: Paper no. 2000GC000146. http://dx.doi.org/10.7265/N51N7Z2P
Also, to help us best serve the scientific and cryospheric research communities, please acknowledge AGDC and NSIDC:
"Data provided by the Antarctic Glaciological Data Center (AGDC) at the National Snow and Ice Data Center, University of Colorado, Boulder, CO."
Whenever you use data distributed by AGDC, please send us one reprint of your paper. Also, please notify us when you transmit our data to other researchers so that we can track data use.
If you have any questions about data citations or our reprint request, please contact NSIDC User Services.