Air pollution on a grand scale is often easily visible from space. An imposing example is the mixture of smoke and smog created by fires spread over many islands in Indonesia. Using imagery acquired by TOMS, and set against a backdrop developed from NOAA data, a huge smoke plume (white), mixed with smog (colors represent variations in ozone amounts) is seen to be heading westward from the islands across the Indian Ocean.
On a wider scale of view, forest fires in three separate areas, one in Borneo, north of Java, and two in Sumatra, in 1997 were imaged by NOAA-14 (at a resolution of 4 km [2.5 miles]).
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