About Climate Variability
The climate variability plot depicts the relationship between streamflow and climate indices. The application uses the seasonal water supply forecast period for historical streamflow calculations and forecast values. The number of historical flows to be displayed can be selected. Ex. 5 would display the past 5 historical flows along with the forecasted flow. The climate indices available for comparison are: Nino 3.4 Sea Surface Temperature (SST) Anomalies, Oceanic Nino Index (ONI), Multivariate ENSO Index (MEI), Pacific Decadal Oscillation Index (PDO), and North Atlantic Oscillation Index (NAO). For each index, a month span can be specified to calculate the index for plotting. Below the plot, the number of samples is displayed along with the correlation coefficient and fitted line equation for the line plotted on the graph.
![sample plot of climate variability](https://webarchive.library.unt.edu/web/20130214095643im_/http://wateroutlook.nwrfc.noaa.gov/img/about/cvar.png)