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500 hPa Height, Temperature, and Wind

Caption:
+500 hPa geopotential height (solid contours every 6 dam).
+500 hPa wind (standard barbs in knots).
+500 hPa temperature (shaded according to the color bar in ^oC; shading is approximately centered on the 500 hPa temperature for the standard atmosphere).
+Image was generated from 1.0x1.0^o NCEP-GFS data (unsmoothed).