Tanzina Akther is a 3rd year PhD student in the Atmospheric Science Research group in the Department of Earth and Atmospheric Sciences (EAS), University of Houston (UH), Houston, TX, USA. Before joining UH she obtained an MS degree in Inorganic and Analytical Chemistry at the University of Dhaka, Bangladesh. Tanzina’s work focuses on a detailed interpretation of a severe ozone episode in Mexico-City in March 2016 using a comprehensive data set which comprises speciated temporally highly resolved C2-C8 VOC, Black Carbon (BC), Particulate matters (PM), selected ion and metals and routine air quality (NO, NO2, NOx, CO, SO2) data along with continuous measurements of boundary layer height data. This data is used for (i) PMF source apportionment to determine the prevalent pollutant sources, (ii) for evaluation of the oxidation capacity of the VOC pool in conjunction with boundary layer processes during that episode and (iii) Model O3 using AtChem2 box model.