Figure 4

Relative coherence as a function of time. Time-series results for three independent tracks (colored dots) and the best-fit exponential decay for the larger (March) and smaller (August) rain events with locations of pixels shown as A, B, and C in Fig. 1b. (A) Alluvial fan site also shown in Fig. 3. (B) River valley site, where rain gauge observations (pink) indicate a second rain event. (C) Site within the coastal cordillera. Evidence of the 2nd rain event can be seen, but both rain events have smaller magnitude.