Video Friday: Preparing for the SubT Final

Scientists have known for decades that the particulate emissions from ships can have a dramatic effect on low-lying stratocumulus clouds above the ocean. In satellite images, parts of the Earth’s oceans are streaked with bright white strips of clouds that correspond to shipping lanes. These artificially brightened clouds are a result of the tiny particles produced by the ships, and they reflect more sunlight back to space than unperturbed clouds do, and much more than the dark blue ocean underneath. Since these “ship tracks” block some of the sun’s energy from reaching Earth’s surface, they prevent some of the warming that would otherwise occur.

The formation of ship tracks is governed by the same basic principles behind all cloud formation. Clouds naturally appear when the…

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News Source: spectrum.ieee.org

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