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We present atmospheric ozone (O3) profiles measured over\udcentral Mexico between November 2012 and February 2014 from two different\udground-based FTIR (Fourier transform infrared) solar absorption experiments.\udThe first instrument offers very high-resolution spectra and contributes to\udNDACC (Network for the Detection of Atmospheric Composition Change). It is\udlocated at a mountain observatory about 1700 m above the Mexico City basin.\udThe second instrument has a medium spectral resolution and is located inside\udMexico City at a horizontal distance of about 60 km from the mountain\udobservatory. It is documented that the retrieval with the high- and medium-resolution experiments provides O3 variations for four and three independent\udatmospheric altitude ranges, respectively, and the theoretically\udestimated errors of these profile data are mostly within 10 %. The good\udquality of the data is empirically demonstrated above the tropopause by\udintercomparing the two FTIR O3 data, and for the boundary layer by\udcomparing the Mexico City FTIR O3 data with in situ O3 surface\uddata. Furthermore, we develop a combined boundary layer O3 remote\udsensing product that uses the retrieval results of both FTIR experiments, and\udwe use theoretical and empirical evaluations to document the improvements\udthat can be achieved by such a combination

Ground-based remote sensing of O&lt;sub&gt;3&lt;/sub&gt; by high- and medium-resolution FTIR spectrometers over the Mexico City basin

Ground-based remote sensing of O<sub>3</sub> by high- and medium-resolution FTIR spectrometers over the Mexico City basin