A likely candidate is rising ultraviolet radiation as a result of either ozone depletion, or a change in the level of cloud cover.

一个可能的原因是臭氧耗竭或云层高度改变引起紫外线辐射增强。

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The massive loss of protection against the sun's ultraviolet (UV) radiation would likely force humans into a vampire-style existence of staying indoors during daylight hours.

缺少了臭氧层对太阳紫外线辐射的抵挡，人类将有可能被迫过起“吸血鬼”般的生活——白天只能躲在屋子里。

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It is therefore likely that the addition of sulphate to the stratosphere would result in a loss of ozone, and thus in more ultraviolet radiation getting through.

因此，向平流层添加硫酸雾很可能会导致臭氧的损耗，从而使更多的紫外线穿过大气层。

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Which creates a greater risk a few percent of increasing ultraviolet radiation (that is equivalent to moving from Washington DC to Richmond, Virginia) or removing (at least) 90% of your clothes and lying in the sun on purpose?

FORBES: Why Do We Fear The Harmless While Irrationally Putting Ourselves In Harm's Way?

It is therefore likely that the addition of sulphate to the stratosphere would result in a loss of ozone, and thus in more ultraviolet radiation getting through.

ECONOMIST: Geoengineering

Special paints are needed to protect the airframe, over a wide range of temperatures, from wind, weather, ultraviolet radiation and exhaust fumes.

ECONOMIST: It’s a wrap | The