In the oceans, floating plants- phytoplankton-can color the water in a wide variety of blues and greens. In the process, they usually sacrifice the big picture. Such satellites zoom in on small areas to collect fine details down to the scale of individual houses or cars. Some images from military or commercial satellites are detailed enough to show many of these things. One of the first things people want to do when they look at a satellite image is identify the places that are familiar to them: their home, school, or place of business a favorite park or tourist attraction or a natural feature like a lake, river, or mountain ridge. They will help you get oriented enough to pull valuable information out of satellite images. These tips come from the Earth Observatory’s writers and visualizers, who use them to interpret images daily. Look for patterns, shapes, and textures. To unlock the rich information in a satellite image, you need to: They can show us how much a city has changed, how well our crops are growing, where a fire is burning, or when a storm is coming. Satellite images are like maps: they are full of useful and interesting information, provided you have a key.
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