Fire Detection and Monitoring using Satellite Observations
The picture below is of a visible image
taken from a weather satellite on August 16, 1996. You generally don't see visible images on the nightly
news because the sun has set by 10:00 PM and so it is dark over the United
States. This image was made during the daylight hours. Notice the smoke plumes. The
fires are marked by red boxes. This was a bad summer for fires in the west because of the dry
weather this summer, and the wet weather in the spring.
Continue reading to learn how we know where the
fires are located.
Observations or electromagnetic radiation with a wavelength of
approximately 4 micrometers are used by scientists
and weather forecasters to detect fog at night and to measure the
temperature of the ocean during the night. Fires are evident in an image of data collected by an instrument that
observes radiation with a wavelength of 4 micrometers. The fires show up as 'hot spots' and in
the image below this is denoted by the red squares.
Scientists use observations at 4 micrometers to monitor
biomass burning in North and South America.
Why do you think it would be better
to use observations at 4 micrometers rather than the visible
wavelengths(visible light has a wavelength between .4 and .7
micrometer)?
More on monitoring fires from space.
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