Figure 3. The maps denote the identified spatial patterns by the Self-Organized Maps (a), while the time series (b) show the Best Match Units (BMUs), indicating the dates each pattern dominates. Each map, placed according to its occurrence, indicates a pattern (according to the number in parenthesis) and its respective percentage of spatial variability. The colors indicate the current magnitude, and the arrows the current direction. The BMUs are a key output of the SOMs analysis. These units provide information on the temporal evolution of each pattern the analysis identifies. Specifically, the BMUs indicate the duration or periodicity with which each pattern occurs. The red line indicates each pattern’s period throughout the year.