Photo of the day - November 8

During early November, we have been having a strong temperature inversion where the temperature at ground level is much colder than the temperature several hundred feet above the ground. If you can position yourself at the same altitude as the inversion layer boundary (such as by flying or climbing a hill), the light is refracted as it passes through the layer causing objects to appear abnormally shaped. In this picture taken at the inversion layer boundary, the hills north of Delta appeared flat topped like some Arizona mesa's. The inversion layer was at about 300 feet above ground level and the temperature was about -15F below the layer and about +10F above. Inversions are less common in the Delta area, than Fairbanks for example, because Delta usually has some air movement (wind) which disrupts the inversion. Photo Courtesy Steve DuBois