Winds Wind Gust Velocity Wind Velocity Wind Velocity and Wind Force (e.g. in Beaufort scale) can be classified under this category. Precipitation Snow on Ground Snow as Precipitation Heat Fluxes Chemical Atmosphere Radiation Terrestrial Rad; Long Wave The total infrared radiation emitted by earth. Most of it is absorbed by the atmosphere, less than ten percent is radiated directly into space Total Rad, Short + Long Wave The sum of solar and terrestrial radiation Incident Radiation The total combined radiation impinging on matter (Sun is primary source; Moon is secondary) Solar Rad, Short Wave Solar radiation is radiant energy emitted by a sun Photosynthetically Active Radiation The range of light between 400-700nm that can be used in photosynthesis by plants Humidity