Enhancements in column concentrations of methane due to emission events are shown in Figures and. Figure shows the time series of total column concentrations of methane, due to event emissions of 100 kg/hr and 1000 kg/hr, at location c. Results for locations a and b are shown in Supporting Information (Figure and Figure ). At a 4 km spatial resolution, the column concentrations due to a 100 kg/hr event, vary by a factor of 26, from a minimum of 1.7 × 10 -5 mol/m 2 to a maximum of 4.4 × 10 -4 mol/m 2 (Table ). For a 1000 kg/hr event, the column concentrations vary by a similar factor of 26, with an order of magnitude higher range