The International Comprehensive Ocean-Atmosphere Data Set (ICOADS) is “probably the most complete and heterogeneous collection of surface marine data in existence,” according to NOAA, and consists of a digital database of 261 million weather observations made by ships, weather ships, and weather buoys spanning the years 1662 to 2007.
And it’s just been animated by Google Maps developers Paul Saxman and Brendan Kenny.
In the below visualization, ships and vessels are colored red-yellow, and other observing platforms (buoys, etc.) are colored blue-cyan and the visualization progresses on a time scale from the earliest to most-recent data.
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