| 释义 |
阳伞效应yángsǎn xiàoyìng由于大气中微粒的散射和云层的反射,到达地面的太阳辐射减弱,这种效应好像是在地面上撑起巨大的遮阳伞,所以叫阳伞效应。火山爆发、沙尘暴等造成的大气总悬浮颗粒物增多及云量增多,都会加强阳伞效应,使地面气温降低。{umbrella effect; because of the scattering of particles in the atmosphere and the reflection of the clouds, the radiation of the sun becomes weaker when it reaches the ground. This is called the umbrella effect as it is evocative of a giant umbrella held up over the earth's surface. Increases in the amount of suspended particles in the atmosphere by volcano eruption and sandstorm, and the thickening of clouds in the sky, may help exacerbate the umbrella effect and reduce the ground temperature.} |