Figure 9

Yalaing Terra and Adiri lightcurves. We plot here the relative reflectivity of the brightened areas in both Yalaing Terra (solid line) and Adiri (dot-dashed line) as a function of time relative to the 2010 September 27 cloudburst recorded by [27]. We arrived at each data point by calculating the average image value in a dark area (V _dark), a light unchanged area (V _{b r i g h t} ), and the brightened area (V), and assigning the relative reflectivity R to be $\frac{V-V_{\text{dark}}}{V_{\text{bright}}-V_{\text{dark}}}$. These two regions show the same pattern of initial darkening for a few months and then brightening beyond their original reflectivity for about a year. We have plotted the brightness trajectory of the cores of the change areas here. While these cores have not yet reverted to their original brightness, the periphery of the change areas have completely reverted as of 1 year beyond the cloudburst.