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AIRCRAFT ACQUIRED IMAGERY PAGE mcnalley_a_txt.html

AIRDAS thermal color composite (Channels 3 (3.90 um); 2 (1.65 um), and 1 (0.68um)) of the McNalley fire, Sequoia National Forest, California. This image was acquired from AIRDAS imaging system aboard the Sky Research Caravan aircraft. The acquiring platform altitude was 8000 feet above nominal terrain. Time of acquisition was 12:30 PM on 25 July 2002. The fire front is represented in bright yellows, oranges, and reds, while the smoke trail is visible in blue. The inclusion of the thermal channel data allow the ability to see through the large smoke plume, while the inclusion of the visible channel (channel 1) allows discrimination of terrain and the smoke plume shape and direction. The "black" areas at the top of the image are scene background areas where an aircraft-induced "roll" is corrected in the image data. This data is not geo-rectified to a map base, but allows fire personnel to view the fire conditions in near-real-time (within five minutes of collection). This scene has been rotated to correspond to mcnalley_b_txt.jpg.