Auxiliary material for paper [2013GL058976R]
Brown Carbon in the Continental Free Troposphere
Jiumeng Liu1,2, Eric Scheuer3, Jack Dibb3, Luke D. Ziemba4, Kenneth.L.Thornhill4,
Bruce E. Anderson4, Armin Wisthaler5, Tomas Mikoviny6, J Jai Devi7, Michael
Bergin7, Rodney J. Weber1*
1
School of Earth and Atmospheric Sciences, Georgia Institute of Technology,
Atlanta, GA, USA.
2
Now at Atmospheric Sciences and Global Change Division, Pacific Northwest
National Laboratory, Richland, WA, USA.
3
Institute for the Study of Earth, Oceans, and Space, University of New Hampshire,
Durham, NH, USA.
4
NASA Langley Research Center, Hampton, VA, 23681, USA
5
Institut fuer Ionenphysik und Angewandte Physik, A-6020 Innsbruck, AUSTRIA
6
Oak Ridge Associated Universities (ORAU), Oak Ridge, TN, USA
7
School of Civil & Environmental Engineering, Georgia Institute of Technology,
Atlanta, GA, USA
*
Correspondence to: Rodney Weber (rodney.weber@eas.gatech.edu)
For submission to GRL
Introduction
Supporting materials include:
-Description of scattering measurement on aircraft, which determines single scattering
albedo
-Detailed description on uncertainty analysis
and supplemental tables and figures, include:
-Table S1. Nomenclature.
-Table S2. Flight periods identified to be largely impacted by biomass burning
contributions.
-Figure S1. (a) Map of NASA DC-8 research aircraft sampling regions during the
DC3 experiment based at Salina, KS. (b) Relative filter sample frequency as a
function of altitude, with number of filters for each altitude bin given.
-Figure S2. Example solution light absorption spectra from the sum of the water and
methanol filter extract, plotted on a (a) linear (b) log scale. Absorption Ångström
exponent is calculated by linear regression fit to logAbs vs logλ over the wavelength
range of 300-450nm, as the blue line in (b).