Plots of Wind Patterns for the World’s Volcanoes

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 text files, for elevation intervals (above sea level) of 0-5, 5-11, 11-16, 16-24, and 24-40km, which give wind vectors, twice daily (at 0000 and 1200 UTC) over the 1990-2010 time range. The rose diagrams are accessible through the attached kmz file, which opens in Google Earth, or as hypertext links in the attached html table. In the kmz file, placemarks at each volcano can be opened to reveal the summary wind rose diagram, along with a link to the page containing the other data.