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North America: Infrared satellite animation

NA WeatherSatellite IRSatellite disc
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View the latest satellite images by selecting a region from the map, or from the drop-down list below.


These images are in JPEG format and occupy about 75 Kbytes. The Infrared images should be updated with the 00:00, 06:00, 12:00 and 18:00 GMT pictures. It usually takes about 1hr 30 min. for these images to be processed and be updated on the web site.

North America IR satellite image
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These images come from satellites which remain above a fixed point on the Earth (i.e. they are "geostationary"). The infrared picture shows the same view but looking at a part of the spectrum which our eyes do not detect. The infrared pictures allow us to measure the temperature of the cloud tops, which can be used to determine their height. The whiter clouds are colder than the greyer clouds in this image. Infrared images can be recorded 24 hours a day. Visible pictures can only be made during daylight hours. Coastlines and lines of latitude and longitude have been added to the images and they have been altered to mercator projection.

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