Articles | Volume 9, issue 1
Atmos. Meas. Tech., 9, 115–132, 2016
https://doi.org/10.5194/amt-9-115-2016

Special issue: StratoClim stratospheric and upper tropospheric processes...

Atmos. Meas. Tech., 9, 115–132, 2016
https://doi.org/10.5194/amt-9-115-2016

Research article 18 Jan 2016

Research article | 18 Jan 2016

Sensitivity of thermal infrared nadir instruments to the chemical and microphysical properties of UTLS secondary sulfate aerosols

P. Sellitto and B. Legras

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Latest update: 06 Mar 2021
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Short summary
This study investigates the sensitivity of TIR satellite nadir observations to the chemical composition and the size distribution of idealized UTLS sulfate aerosol layers. The dependence of the sulfate spectral signature, between 700 and 1200 cm−1, on the sulfuric acid mixing ratio, effective number concentration and radius, as well as the role of interfering parameters, is analysed. The information content of broadband and high-spectral-resolution observations is finally discussed.