Articles | Volume 18, issue 7
Atmos. Chem. Phys., 18, 4403–4423, 2018
https://doi.org/10.5194/acp-18-4403-2018
Atmos. Chem. Phys., 18, 4403–4423, 2018
https://doi.org/10.5194/acp-18-4403-2018

Research article 03 Apr 2018

Research article | 03 Apr 2018

Spatio-temporal variations of nitric acid total columns from 9 years of IASI measurements – a driver study

Gaétane Ronsmans et al.

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Latest update: 16 Sep 2021
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Short summary
The paper aims at understanding the variability of nitric acid (HNO3) in the stratosphere; 9-year time series of IASI measurements are analysed and, for the first time for HNO3, fitted with regression models in order to identify the factors at play. It was found that the annual variability is the main driver and that the polar stratospheric clouds influence greatly HNO3 variability at polar latitudes. The results show the potential of such analyses to better understand the polar processes.
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