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Vlemmix, T. (author), Hendrick, F. (author), Pinardi, G. (author), De Smedt, I. (author), Fayt, C. (author), Hermans, C. (author), Piters, A. (author), Wang, P. (author), Levelt, P.F. (author), Van Roozendael, M. (author)A 4-year data set of MAX-DOAS observations in the Beijing area (2008–2012) is analysed with a focus on NO2, HCHO and aerosols. Two very different retrieval methods are applied. Method A describes the tropospheric profile with 13 layers and makes use of the optimal estimation method. Method B uses 2–4 parameters to describe the tropospheric...journal article 2015
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Vlemmix, T. (author), Hendrick, F (author), Pinardi, G (author), De Smedt, I (author), Fayt, C (author), Hermans, C. (author), Piters, AJM (author), Wang, P. (author), Levelt, Pieternel Felicitas (author), van Roozendael, M (author)A 4-year data set of MAX-DOAS observations in the Beijing area (2008-2012) is analysed with a focus on NO2, HCHO and aerosols. Two very different retrieval methods are applied. Method A describes the tropospheric profile with 13 layers and makes use of the optimal estimation method. Method B uses 2-4 parameters to describe the tropospheric...journal article 2015
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Vlemmix, T. (author), Hendrick, F. (author), Pinardi, G. (author), De Smedt, I. (author), Fayt, C. (author), Hermans, C. (author), Piters, A. (author), Wang, P. (author), Levelt, P.F. (author), Van Roozendael, M. (author)A four year data set of MAX-DOAS observations in the Beijing area (2008–2012) is analysed with a focus on NO2, HCHO, and aerosols. Two very different retrieval methods are applied. Method A describes the tropospheric profile with 13 layers and makes use of the optimal estimation method. Method B uses 2–4 parameters to describe the tropospheric...journal article 2014
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Hendrick, F. (author), Müller, J.F. (author), Clémer, K. (author), Wang, P. (author), De Maziere, M. (author), Fayt, C. (author), Gielen, C. (author), Hermans, C. (author), Ma, J.Z. (author), Pinardi, G. (author), Stavrakou, T. (author), Vlemmix, T. (author), Van Roozendael, M. (author)Ground-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements of nitrous acid (HONO) and its precursor NO2 (nitrogen dioxide) as well as aerosols have been performed daily in Beijing city centre (39.98° N, 116.38° E) from July 2008 to April 2009 and at the suburban site of Xianghe (39.75° N, 116.96° E) located ~60...journal article 2014