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Irie et al. 2004

Irie, H., Kondo, Y., Koike, M., Takegawa, N., Tabazadeh, A., Reeves, J.M., Sachse, G.W., Vay, S.A., Anderson, B.E. and Mahoney, M.J. (2004). Liquid ternary aerosols of HNO₃/H₂SO₄/H₂O in the Arctic tropopause region. Geophysical Research Letters 31: doi: 10.1029/2003GL018678. issn: 0094-8276.

Measurements of total reactive nitrogen (NOy) concentrations in the gas and aerosol phases were made on board the NASA DC-8 aircraft within 1 km above the Arctic tropopause in February 2000. As temperatures decreased, NOy was taken up into the background sulfate aerosols. The observed temperature-dependent NOy uptake agrees well with that calculated from a model of nitric acid (HNO3) uptake to form liquid HNO3/H2O/H2SO4 ternary droplets. The observations reported here provide the first direct evidence for the formation of ternary droplets in the Arctic tropopause region.

BACKGROUND DATA FILES

	Abstract

Keywords
Atmospheric Composition and Structure, Aerosols and particles, Atmospheric Composition and Structure, Cloud physics and chemistry, Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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