Willow Spring, NC City Data - Population, Homes, Statistics. Willow Spring, NC is a city with great restaurants, attractions, history and people. There are around 8,926 people who live in Willow Spring and approximately 627,846 who live in Wake County.
Snow, ice, and clouds have high albedos (typically from 0.7 to 0.9) and reflect more energy than they absorb. Earthâs average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. A sensor aboard NASAâs Terra satellite is now collecting detailed measurements of how much sunlight the earthâs surface reflects back up into the atmosphere.
Of the scattered and reflected light, 25 also reaches the surface, while 51 is radiated into space as short-wave radiation. This makes the albedo of the earth to be about 0.39. The atmosphere absorbs 141 from the surface, and re-emits 125 to the surface as long-wave (4-120Î¼m) radiation. The net amount, 65, is radiated to space. The atmosphere receives 30 by condensation of water, and gives up 30 by evaporation, most of which is part of the hydrologic cycle.