 Okay, well, let's first look at the short wave part of the radiation budget. We start out with 100 parts of solar energy. Let's see what happens to those 100 parts within the atmosphere and the Earth's surface. Well, 21% is reflected back out to space from cloud tops, 7% is backscattered by the atmosphere back out to space, and 3% is reflected from the Earth's surface. So if we add those up, 21 plus 3, 24 plus 7, 31 parts of that initial 100 units of solar energy are reflected out to space. And that's what gives us Earth's albedo of roughly 31%, or an albedo of 0.31. Okay, well, that leaves behind 69 parts of solar energy. So let's see what happens to those 69 parts. 3% are absorbed within the stratosphere by ozone, 18% is absorbed by the rest of the atmosphere or by dust, and then 3% is absorbed by clouds. So if we add that together, that's 18 plus 3, 21 plus 3, that's 24. 24 parts are absorbed somewhere within the atmosphere. So that's 69 that weren't reflected to space. Of those 69, 24 are absorbed. That leaves behind now 45. What happened to those remaining 45 units of solar energy? Well, 25 are directly absorbed by the Earth's surface, and nearly as much 20% is actually diffuse radiation that's scattered forward towards the surface. The reason that we look up into the atmosphere and we see blue sky is because of the preferential scattering of the atmosphere in the wavelengths that correspond to blue light. And that's that 20% of diffuse radiation. So that's the short wave budget of the atmospheric radiation budget.