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.
Approximately 50 percent of the solar energy that strikes the top of the atmosphere reaches Earth's surface. About 30 percent is reflected back to space by the atmosphere.The remaining 20 percent of the energy is absorbed by clouds and the atmosphere's gases.ecause Earth has a much lower surface temperature than the Sun, its radiation is in the form of longwave infrared radiation. Because the atmospheric gases, primarily water vapor and carbon dioxide, are more efficient absorbers of terrestrial (longwave) radiation, the atmosphere is heated from the ground up.