| environ. |
stratosphere The layer of the atmosphere which is sandwiched between the troposphere and mesosphere. Of the energy that reaches the Earth from the sun, only 3% is absorbed in the stratosphere, but that includes the vitally important process of absorption of ultraviolet radiation by the stratospheric ozone layer. The stratosphere is cloudless and dust free, and almost unaffected by the turbulent conditions of the underlying level of the atmosphere (大气的层，是对流层和中间层之间的夹心层，太阳能量到达地球的只有3％是在平流层吸收，但包括极为重要的臭氧吸收紫外线辐射的过程，平流层无云且无尘埃，几乎不受底下气流的动荡影响。) |
