Contact: Sonia Fernandez
University of California - Santa Barbara
Caption: The top map on the left represents the current normalized difference vegetation index (NDVI) conditions (April 11-20, 2012), and the bottom left is the average for this time of year. The top right map is the difference between the top (current) and bottom (normal) on the left, and the bottom right map is the "significance" or "z-score" of that difference.
Credit: Joel Michaelsen
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