Parametric study for χ vs maximum temperature (above) and χ vs the gradient of maximum temperature (below) for three different resolutions. In both plots, each triangle in the dotted green line represents the runs with a grid distance of 160 km, dots in the dashed red line 80 km, and diamonds in the solid blue line 40 km. The maximum temperature and the gradient of maximum temperature have been taken at 300 seconds for all the runs. The dotted grey line shows the maximum temperature for the reference atmospheric stratification, which is the same for all the runs. The x-axis shows the χ parameter over a range of five orders of magnitude.