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This product includes rose diagrams and tables of wind patterns at volcanoes listed in the Smithsonian Institution’s Volcanoes of the World Database. At each volcano, the speed and direction of wind above the volcano were read from output of the NCEP/NCAR Reanalysis 1 model, at twice-daily intervals from January 1, 1990 to December 28, 2009. These results were then plotted as 20 wind rose diagrams, divided into four seasons and five elevation intervals, and as one summary plot for year-round winds at 0-5 km elevation above sea level. Rose petals indicate the downwind direction of the wind vector. These rose diagrams are wrapped into a single zip file for each volcano. Also included in the zip file are five...