All around you, there are tiny particles suspended in the air, known as aerosols. When you zoom out and look at the world as a whole, these aerosols can paint a picture of what's going on across the earth's atmosphere, from weather patterns to natural and man-made events.
That sort of picture is what you can see here in these composite images from NASA, representing the world as it was on August 23. The pretty clouds of blue, purple and red are representations of different kinds of aerosols in the atmosphere, gathered from NASA satellite data and measurements taken on the ground.
According to NASA's description of the images, the blue is sea salt, the red is black carbon (like you would see from a fire) and the purple is dust. By looking at the patterns of these three aerosols, you can make out some major weather and climate events: hurricanes, where the blues tightly gather; heavy winds and dust storms in the clouds of purple; and red smudges of carbon over wildfires.
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