There is the information content of atmospheric water vapour in direct solar radiation measured with a solar spectrometer.

太阳光谱仪测得的直接辐射光谱含有大气水汽含量的信息。

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Calcium oxide although having excellent refractory properties is rarely used because of hydration by atmospheric water vapour.

尽管氧化钙有卓越的耐火特性，却很少使用到，因为和大气水蒸汽容易发生水合作用。

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It would be better if there were some way to see atmospheric water while it is still vapour, before raindrops form.

如果我们能找到一些能在雨滴形成以前的蒸汽状态下就观察到大气水方法，情况会变的好一些。

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These data will provide invaluable information about Antarctic atmospheric dynamics, of the origin of water vapour over the oceans and how it is ultimately deposited as snow on the surface of the ice sheet.

BBC: Viewpoint: The last great polar challenge

The idea is to test the effects on the atmospheric window of various pollutants, and also of water vapour, by releasing them into the building.

ECONOMIST: Solar power from space