A study of atmospheric energetics in an open mesoscale system and the implications of anthropogenic heat and moisture on atmospheric circulations

Physics

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Atmospheric Circulation, Kinetic Energy, Mesoscale Phenomena, Plumes, Potential Energy, Boundary Layer Flow, Energy Transfer, Radiative Transfer, Water Vapor

Scientific paper

Mesoscale circulations and the impact of moist plumes on altering these circulations were studied by the use of atmospheric energetics analysis. The mean values of the available potential energy (APE) and the kinetic energy (KE) and the energy transfer and transformation terms exhibited a dependence upon the scale of study. Converting the APE and KE values to energy per unit pressure depth values revealed that the mesoscale energy values were 3 to 5 times smaller in magnitude than the respective energy values for the mean planetary circulation. The rate of conversion of APE and KE was shown to be a function of the strength of the planetary boundary layer circulation. The long wave radiative flux divergence was the only physical mechanism examined which could modify atmospheric energetics due to the introduction of additional water vapor into the atmosphere. The impact of large water vapor emissions into the atmosphere was not found to significantly modify the mesoscale atmospheric energetics.

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