1·One way we keep track of the radiation budget is by looking at the albedo of the different surfaces on the planet.
我们记录辐射收支的一种方法是观察地球上不同表面的反照率。
2·A surface's albedo is the percentage of incoming solar energy, sunlight, that's reflected off that surface back into space.
一个表面的反照率是入射的太阳能、阳光从这个表面反射回太空的百分比。
3·Sea ice retreat and snow melt reduce Earth's albedo, which can lead to increased warmth and further melting.
海冰的消退以及冰雪的融化降低了地球的反照率，这将导致温度继续增高冰雪继续消融。
4·The bigger the asteroid, the greater the potential cataclysm. The reflectivity of the surface — what astronomers call albedo — tells how easily it can be detected.
小行星的体积越大，潜在灾难的规模就越大。行星的表面反射率——天文学家称为反照率——决定了它有多容易被探测到。
5·Melting of snow and ice affects albedo in two ways.
冰雪融化从两个方面影响反照率。
1·A similar example of lowered albedo occurs when sea-ice melts and disappears, causing the darker coloured sea underneath to absorb more heat.
当海冰融化消失时，会同样降低反射率，导致深色的海底吸收更多的热量。
2·However, the approximation error can be large under harsh lighting conditions, thus making it difficult to recover albedo information.
然而，在苛刻光照条件下，这种近似的误差往往比较大，以至于很难恢复出反射率信息。
3·It proved that the approach based on spectral polygon can be used to similarity measure and image retrieval effectively because of its synthetic applications to albedo and wavelength information.
实验结果表明，基于光谱多边形的方法能够更有效地综合应用反射率和波长二维信息，有效度量光谱向量相似性。
4·Not affected by colors or albedo. Any objects can be detected.
不受颜色及反射率的影响，可来测全何被测物。
5·They increase albedo of the Earth and serve as the basis of its global freezing up.
它们增加了地球的反射率，并成为地球全球冰封的基础。