Briefly describe the variation in precipitation shown on this plot.

• Calculate and plot the monthly-averaged precipitation – describe and explain the variation in precipitation.

• Calculate and plot the averaged monthly precipitation for July-August-September for each year on one set of axes – y-axis is precipitation, x-axis is time in years. Briefly describe the variation in precipitation shown on this plot.

• Calculate and plot the monthly anomalies of precipitation for July-August-September. Briefly describe the variation in precipitation shown on this plot.Note the years that are El Nino/La Nina in the 20th Century

• Plot the averaged monthly sea surface temperature anomalies for July-August-September for each year on one set of axes. Describe the variation in SST shown on this plot. Note the years that are El Nino/La Nina in the 20th Century.

• Give a detailed comparison of the extremes (very large, positive; very large negative) of monthly (JAS) precipitation anomalies with those of the ENSO index (SST plot from above). Plotting both the anomalies of precipitation and SST on th