yet clouds reflect about seventy-five watts per square meter.
yet clouds reflect about seventy-five watts per square meter.
sunlight:20
if the extraterrestrial solar radiation is 1367 watts per square meter (the value when the earth–sun distance is 1 astronomical unit), then the direct sunlight at earth's surface when the sun is at the zenith is about 1050 w/m2, but the total amount (direct and indirect from the atmosphere) hitting the ground is around 1120 w/m2.