Precipitation in California Over Time - 1950 to 2014

Visualizing Climate Change

This time series required the acquisition of 61 years of precipitation data for every gauge in California. Microsoft Access was used to manage the massive data set. I excluded any gauges from the analysis that were not present for the entire 20 year span of any time series. The 20-year average was then calculate for each gauge, converted into a geospatial database, and used to create point files. After the point files were interpolated in ArcMap (Kriging interpolation), Adobe Photoshop was used for coloring and Illustrator for layout and overall design.

Note: The first map in this series is incorrectly labeled, and should read “1950-1970″ (though”1950-1969” is more accurate).

Advanced Cartographic Seminar (2015)

Maps by Jerry Dinzes

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