Articles | Volume 18, issue 11
https://doi.org/10.5194/amt-18-2397-2025
https://doi.org/10.5194/amt-18-2397-2025
Research article
 | 
05 Jun 2025
Research article |  | 05 Jun 2025

Retrieval of NO2 profiles from 3 years of Pandora MAX-DOAS measurements in Toronto, Canada

Ramina Alwarda, Kristof Bognar, Xiaoyi Zhao, Vitali Fioletov, Jonathan Davies, Sum Chi Lee, Debora Griffin, Alexandru Lupu, Udo Frieß, Alexander Cede, Yushan Su, and Kimberly Strong

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Cited articles

Alwarda, R., Bognar, K., Zhao, X., Fioletov, V., Davies, J., Lee, S. C., Griffin, D., Lupu, A., Frieß, U., Cede, A., Su, Y., and Strong, K.: Replication Data for: Retrieval of NO2 profiles from three years of Pandora MAX-DOAS measurements in Toronto, Canada, Version 1.0, Borealis [data set], https://doi.org/10.5683/SP3/J8PDHW, 2024. 
Beirle, S., Platt, U., Wenig, M., and Wagner, T.: Weekly cycle of NO2 by GOME measurements: a signature of anthropogenic sources, Atmos. Chem. Phys., 3, 2225–2232, https://doi.org/10.5194/acp-3-2225-2003, 2003. 
Brion, J., Chakir, A., Daumont, D., Malicet, J., and Parisse, C.: High-resolution laboratory absorption cross section of O3. Temperature effect, Chem. Phys. Lett., 213, 610–612, https://doi.org/10.1016/0009-2614(93)89169-I, 1993. 
Brion, J., Chakir, A., Charbonnier, J., Daumont, D., Parisse, C., and Malicet, J.: Absorption Spectra Measurements for the Ozone Molecule in the 350–830 nm Region, J. Atmos. Chem., 30, 291–299, https://doi.org/10.1023/a:1006036924364, 1998. 
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Short summary
Nitrogen dioxide (NO2) is a pollutant with a short lifetime and large variability, but there are limited measurements of its distribution in the lower atmosphere. We present a new 3-year dataset of NO2 vertical profiles in Toronto, Canada, and evaluate it using NO2 from satellite and surface monitoring networks and simulations by an air quality forecast model. We quantify and explain the differences among the datasets to provide information that can be used to understand NO2 variability.
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