Bufflegrass Greenness Observations

Figure 7. Graph of correlation coefficients between cumulative precipitation amounts at Pima Canyon field and both observed percent greenness (“Field Obs”) and MODIS NDVI values for 2010–2013. X axis values correspond to the number of 8-day time periods over which precipitation was summed, with 0 = current time period, 1 = the previous time period, 2 = the previous 2 time periods, etc.