Causes of variability in light absorption by particles in snow at sites in Idaho and Utah.

• Main Authors: Doherty, Sarah, Hegg, Dean A., Johnson, James E., Quinn, Patricia K., Schwarz, Joshua P., Dang, Cheng, Warren, Stephen G.
• Format: Dataset
• Language: English
• Published: 2015
• Subjects: Arctic; Hegg; black carbon
• Online Access: http://hdl.handle.net/1773/36871

This file accompanies “NAmer2014SnowBC_Dohertyetal_v1.xlsx”, which contains data on black carbon (BC) and other light-absorbing particles in snow in Utah and Idaho, for samples collected January-March 2014 in Jan/Feb 2013 and 2014 in Utah. Data are available as an Excel file with headers, or as a comma-separated data file, with no headers. There is one entry per layer of snow sampled. All entries (other than column titles in the .xlsx) are numeric. Detailed information on our measurements can be found in a series of publications, as given below.  Description of the instrument and method used to make the measurements: Grenfell, T. C., S. J. Doherty, A. D. Clarke, and S. G. Warren, Spectrophotometric determination of absorptive impurities in snow, Appl. Opt., 50(14), pp.2037-2048, 2011.  Summary and discussion of dataset “NAmer2014SnowBC_Dohertyetal.xlsx”, including maps of sample locations: Doherty, S. J., D. A. Hegg, P. K. Quinn, J. E. Johnson, J. P. Schwarz, C. Dang and S. G. Warren, Causes of variability in light absorption by particles in snow at sites in Idaho and Utah, J. Geophys. Res. Atmos., 121, doi:10.1002/2015JD024375, 2016. Note that the measurement and analysis techniques used to produce these data were also used in a broad Arctic survey (2006-2010) of BC and other light-absorbing particles snow, as reported here: Doherty, S. J., S. G. Warren, T. C. Grenfell, A. D. Clarke, and R. E. Brandt: Light-absorbing impurities in Arctic snow, Atmos. Chem. Phys., 10, 11647-11680, doi:10.5194/acp-10-11647-2010, 2010. http://www.atmos-chem-phys.net/10/11647/2010/acp-10-11647-2010.html The data presented are from samples of snow gathered approx. every few days at three sites in central Idaho from 27 January to 24 March 2014. In most cases samples were gathered at intervals throughout the snowpack depth. In a few cases we only sampled newly-fallen surface snow. Samples were also collected from a site to the southeast of Vernal, Utah, mostly of surface snow only, 28 January – 21 February 2013 and 17 January – 17 ...