An animation was developed to suggest the coarse sub-decadal trends of stream flow in key US Southwest streams, covering the period form 1940 to date.  In this example, I’ve chosen the 5 year trailing average (5yta), calculated at New Years for every fifth year.

Latitude and Longitude tic marks and labels are shown in this orthographic projection.  Kriging contouring was used for the stream data.

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