Tuesday, April 14, 2009

Isotachs





Isotachs are a type of contour map that measures wind speed. This image was taken on July 29th 1997, Meteosat WV image; yellow: isotachs 300 hPa, black: shear vorticity 300 hPa; SatRep overlay. In this image yellow lines represent isotachs, lines encompassing areas of equal windspeed.

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