Radiation Processes In The Lower And Middle Atmosphere

The movement and causes of this movement in Earths atmosphere depend merely on the magnitudernand distribution of the net radiative heating of the earth atmosphere system. In therntroposphere, the net adiabatic heating rate is dominated by the imbalance between the transferrnof heat from the surface and the thermal emission of radiation to space. Latent heat is thernmajor component of the flux from the surface to the atmosphere, and clouds play a major rolernin the emission of radiation to space. In the stratosphere the net heating depends solely on thernimbalance between local absorption of solar UV radiation and infrared radiative loss.rnIn this region, ozone is the principal absorber and carbon dioxide is the dominant emitter.rnInfrared emission by ozone and water vapor, molecular oxygen, carbon dioxide and nitrogenrndioxide play a secondary roles. The distribution of the radiative sources and sinks due to thernabove gases exerts a zero order control on the large-scale seasonally varying mean temperaturernand zonal wind fields of the stratosphere.rnThese radiative process are therefore, significant to understand the stratosphere- troposphererninteractions. In generally, this study (project) introduces the basic principles of radiation, solarrnradiation and their process in the stratosphere and troposphere.

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