Articles | Volume 13, issue 10
Earth Syst. Sci. Data, 13, 4929–4950, 2021
Earth Syst. Sci. Data, 13, 4929–4950, 2021
Data description paper
27 Oct 2021
Data description paper | 27 Oct 2021

Advanced NO2 retrieval technique for the Brewer spectrophotometer applied to the 20-year record in Rome, Italy

Henri Diémoz et al.

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Cited articles

Aliwell, S. R., Van Roozendael, M., Johnston, P. V., Richter, A., Wagner, T., Arlander, D. W., Burrows, J. P., Fish, D. J., Jones, R. L., and Tørnkvist, K. K., Lambert, J.-C., Pfeilsticker, K., and Pundt, I.​​​​​​​: Analysis for BrO in zenith-sky spectra: An intercomparison exercise for analysis improvement, J. Geophys. Res., 107, ACH 10–1–ACH 10–20​​​​​​​,, 2002. a, b, c
ARPA Lazio: Concentrazione media del biossido di azoto (NO2), Tech. rep., available at: (last access: 17 October 2021)​​​​​​​, 2020 (in Italian). a
ARPA Lazio: Monitoraggio della qualità dell'aria della regione Lazio, Valutazione preliminare anno 2020, Tech. rep., (last access: 17 October 2021), 2021 (in Italian). a
Barton, D. V.: The measurement of NO2 using Brewer spectrophotometers, Master's thesis, York University, Toronto, Ontario, 2007. a, b
Bassani, C., Vichi, F., Esposito, G., Montagnoli, M., Giusto, M., and Ianniello, A.: Nitrogen dioxide reductions from satellite and surface observations during COVID-19 mitigation in Rome (Italy), Environ. Sci. Pollut. R., 28, 22981–23004,, 2021. a, b
Short summary
A 20-year (1996–2017) record of nitrogen dioxide column densities collected in Rome by a Brewer spectrophotometer is presented, together with the novel algorithm employed to re-evaluate the series. The high quality of the data is demonstrated by comparison with reference instrumentation, including a co-located Pandora spectrometer. The data can be used for satellite validation and identification of NO2 trends. The method can be replicated on other instruments of the international Brewer network.