Articles | Volume 9, issue 9
Atmos. Meas. Tech., 9, 4601–4613, 2016
https://doi.org/10.5194/amt-9-4601-2016
Atmos. Meas. Tech., 9, 4601–4613, 2016
https://doi.org/10.5194/amt-9-4601-2016

Research article 20 Sep 2016

Research article | 20 Sep 2016

A laser-induced fluorescence instrument for aircraft measurements of sulfur dioxide in the upper troposphere and lower stratosphere

Andrew W. Rollins et al.

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Cited articles

Ahmed, S. M. and Kumar, V.: Quantitative photoabsorption and flourescence spectroscopy of SO2 at 188–231 and 278.7–320 nm, J. Quant. Spectrosc. Ra., 47, 359–373, https://doi.org/10.1016/0022-4073(92)90038-6, 1992.
Bludský, O., Nachtigall, P., Hrušák, J., and Jensen, P.: The calculation of the vibrational states of SO2 in the C ̃1B2 electronic state up to the SO(3Σ-)+O(3P) dissociation limit, Chem. Phys. Lett., 318, 607–613, https://doi.org/10.1016/S0009-2614(00)00015-4, 2000.
Bradshaw, J. D., Rodgers, M. O., and Davis, D. D.: Single photon laser-induced fluorescence detection of NO and SO2 for atmospheric conditions of composition and pressure, Appl. Optics, 21, 2493, https://doi.org/10.1364/AO.21.002493, 1982.
Brand, J. C. D. and Srikameswaran, K.: The Π*-Π (2350 Å) band system of sulphur dioxide, Chem. Phys. Lett., 15, 130–132, https://doi.org/10.1016/0009-2614(72)87034-9, 1972.
Calvert, J. C.: SO2, NO and NO2 Oxidation Mechanisms: Atmospheric Considerations, 3rd ed., Butterworth Publishers, Stoneham, MA, USA, 1984.
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In situ measurements of SO2 in the tropical UT–LS have been scarce, in part due to limitations of existing instrumentation. Here we present a new laser-induced fluorescence instrument capable of measuring SO2 in the UT–LS region at single part-per-trillion (ppt) mixing ratios and demonstrate it on the NASA WB-57F aircraft up to 19.7 km altitude.