Articles | Volume 8, issue 6
Atmos. Meas. Tech., 8, 2417–2435, 2015
https://doi.org/10.5194/amt-8-2417-2015
Atmos. Meas. Tech., 8, 2417–2435, 2015
https://doi.org/10.5194/amt-8-2417-2015

Research article 10 Jun 2015

Research article | 10 Jun 2015

Tropospheric nitrogen dioxide column retrieval from ground-based zenith–sky DOAS observations

F. Tack et al.

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Short summary
An algorithm is presented for retrieving tropospheric NO2 vertical column densities from ground-based zenith-sky (ZS) measurements of scattered sunlight. The different steps are fully characterized and recommendations are given for each of them. The retrieval algorithm is applied on a 2-month ZS data set acquired during the CINDI campaign and on a 2-year data set acquired at the OHP NDACC station. The error budget assessment indicates that the overall error on the column values is less than 28%.