EESB04H3 Study Guide - Midterm Guide: Heat Flux, Vapor Pressure, Solar Constant
24 Oct 2016
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Document Summary
The global energy balance: driver of hydrological processes. Driver of energy on earth is radiation from the sun. Main drivers of spatial and temporal variation of energy received: According to planck"s law, the wavelength of the energy emitted by a surface decreases as its temperature increases. Wien"s displacement law calculates the wavelength at which maximum energy radiation occurs, given a specific surface temperature. In other words, it gives the most emitted wave of radiation (an object will also emit other wavelengths at lower intensities the further u go from the maximum energy radiation wavelength) It"s shortwave radiation (in this case it"s mostly uv) Insolation not reflected by earth"s surface is absorbed. Once absorbed, it maybe re-emitted as an energy output. The stefan-boltzmann law describes the rate at which energy is emitted from a substance. We can say the sun has emissivity of 1.
