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.
Radiation Balance for Both Earthâs Surface and Atmosphere. The incoming solar radiation is absorbed at Earthâs surface (51 units) and by the atmosphere and clouds (19 units). This is balanced by the infrared radiation emitted from Earthâs surface (6 units) and from the atmosphere (64 units) which are both lost to space. Radiation Balance for both Earth's Surface and Atmosphere.