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。
One way we keep track of the radiation budget is by looking at the albedo of the different surfaces on the planet.
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。
A surface's albedo is the percentage of incoming solar energy, sunlight, that's reflected off that surface back into space.
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。
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.
应用推荐