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Satellite and Radar
Why is the satellite image partly or all black?
If you are looking at a visible image, chances are it is at night or during the twilight hours. Because visible imagery works by measuring the amount of visible light reflected back to the satellite sensors, overnight when there is no visible light, the images appear black. Around sunrise and sunset, when the light is very dim, the satellite imagery will appear very faint and will be hard to resolve detail on.
If the image that you are looking at is infrared, there is probably a problem with the satellite. Due to technical malfunctions or routine maintenance, sometimes infrared images are sent from the satellite that have large areas of no data on them. These will show up as partly black images.
Related Articles
- What?s satellite imagery?
- Can you give me some general information on satellite images?
- What is the difference between visible and infra-red satellite?
- What do the colours mean on satellite images?
- Where can I find images of other countries?
- When are the images updated?
- What?s radar?
- How often are radar images updated?
- What is the difference between a forecast rain chart and the rainfall radar chart?
- When I try to view the radar display it just sits on 'loading' and I can't view the full sequence
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A quick look at our water storages
12:14 AEST Given the largely clear skies across the country today, it’s a good opportunity to take a look at the water storages of Australia’s major cities. While rainfall is obviously a major contributor to the level of major dams, it is not the only factor.
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