Supplementary material to "Inversion of tropospheric profiles of aerosol extinction and HCHO and NO<sub>2</sub> mixing ratios from MAX-DOAS observations in Milano during the summer of 2003 and comparison with independent data sets"

Abstract

SupplementThe first part of the supplement presents a modified version of Fig. 4. In contrast to the original figure, in Fig. S1 the error bars are shown for the retrievals assuming a box-profile (shape parameter = 1).The second part of the supplement (Figs. S2 -S11) presents the individual graphs of the correlation analyses between the MAX-DOAS results versus independent measurements as well as between MAX-DOAS results of the different telescopes.In the third part of the supplement, the results of the normalised radiance and the normalised O 4 dAMF α (Fig. S12) are shown for the whole campaign.The fourth part of the supplement (Fig. S13) presents results for individual days (individual elevation sequences) are shown. For comparison, AOD from the AERONET station at Ispra, NO 2 and HCHO mixing ratios from the long path DOAS instrument, and HCHO mixing ratios from the Hantzsch instrument are also included.

Simultaneous Observations of Nitrogen Dioxide, Formaldehyde and Ozone in the Indo-Gangetic Plain

“…Understanding of current emissions (Martin et al, 2006), the performance of chemical transport models (Zyrichidou et al, 2009;Huijnen et al, 2010, and references therein) and changes in anthropogenic emissions (Stavrakou et al, 2008;Wang et al, 2012) have been studied using satellite retrieved NO 2 columns. Observations of NO 2 (Johansson et al, 2009;Wagner et al, 2010;Constantin et al, 2013) using the Differential Optical Absorption Spectroscopy (DOAS) technique (Noxon, 1975;Solomon et al, 1987) have been reported at various locations around the world and in several cases have been used for retrieving vertical profiles of atmospheric NO 2 and also for validating satellite observations (Hönninger et al, 2004;Frieß et al, 2006;Wagner et al, 2011;Hendrick et al, 2014).…”