Auxiliary material for this article contains one data set and eight figures.

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jgrd17358-sup-0001-readme.txtplain text document7Kreadme.txt
jgrd17358-sup-0002-ds01.docWord document377KData Set S1. Molar absorptivities of H2O2 (at 293K), NO3- (at 293K), NO2- (274 K), and HULIS (at 293K).
jgrd17358-sup-0003-fs01a.jpgimage/pjpeg566KFigure S1a. Example of workflow of raw data treatment: the measured absorption coefficient at 230 nm versus the time of the sample scan.
jgrd17358-sup-0004-fs01b.jpgimage/pjpeg697KFigure S1b. Example of workflow of raw data treatment: the resulting spectra (from Figure S1a) for MQ and the sample.
jgrd17358-sup-0005-fs01c.jpgimage/pjpeg712KFigure S1c. Example of workflow of raw data treatment: the sample spectrum after the reference MQ is subtracted.
jgrd17358-sup-0006-fs02.jpgimage/pjpeg683KFigure S2. Molar absorptivity of H2O2.
jgrd17358-sup-0007-fs03.jpgimage/pjpeg574KFigure S3. Molar absorptivities of NO3- measured at Barrow as well as in the lab.
jgrd17358-sup-0008-fs04.jpgimage/pjpeg855KFigure S4. Average absorptivity of 34 HULIS samples measured at Barrow by Voisin et al.
jgrd17358-sup-0009-fs05.jpgimage/pjpeg572KFigure S5. Sum(alpha(wavelength))/(residual) (300–450 nm) in terrestrial depth profile snow samples on DOY 63 versus Cl- concentration.
jgrd17358-sup-0010-fs06.jpgimage/pjpeg598KFigure S6. Time series of Sum(alpha(wavelength))/(residual) (300–450 nm) in surface snow samples between DOY 77.0 and 85.0.
jgrd17358-sup-0011-fs07.jpgimage/pjpeg748KFigure S7. Diurnal variation in (alpha(wavelength))/(residual) (300–450 nm) in the period from DOY 80.0 ? 84.0.
jgrd17358-sup-0012-fs08.jpgimage/pjpeg712KFigure S8. Correlation of the aldehydes HCHO and glyoxal with the sum of unknown absorption in the range 300–450 nm.
jgrd17358-sup-0013-t01.txtplain text document0KTab-delimited Table 1.

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