credits--smaller image & larger image: NASA/GSFC, MODIS Rapid Response; smaller & larger image source
Ship Tracks South of Alaska
These tracks were made south of Alaska when water vapor condensed on particles in ships' exhausts.
-- Click on the image for the same scene in false color, showing the relative size of the particles: yellow-orange indicates small particles; lavender-purple, large ones.
-- To find out how the particle size affects the intensity of the scattered sunlight, visit Ship Tracks South of Alaska.
-- To learn about the effects of aircraft contrails on Earth's climate, see this Physics in Your World.
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A Student's Guide to Global Climate Change
Check out this Environmental Protection Agency guide that helps students learn all about climate change.