Thicker Ozone=Colder Earth?

Our planet's best line of defense against the worst of the sun is the ozone layer. It is no thicker than 0.01 millimeters. It absorbs 97 to 99% of the sun's medium UV light (200-315 nanometers). It contains 10 parts per million of ozone in that layer alone.

With an absent or even thinner ozone layer, the sun's UV light would damage the planet to a greater extent, disrupting the course of evolution to the extent of barring it from ever reaching land.

But what if the ozone layer were thicker? Say, 10 parts per hundred of ozone, half a millimeter thick. Would a thicker shield cool down the global climate?

posted almost 8 years ago

JohnWDailey‭

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