Atmospheric Transport Processes Part 2:Chemical Frances

摘要

In Part 1 I discussed in detail the dynamics of atmospheric flow patterns and the energetics of the general circulation which provide the physical mechanisms of large-scale transport processes. Computations of momentum, heat, and water-vapor fluxes revealed the existence of mean meridional circulation cells in the troposphere and stratosphere as well as the dominant effects of large-scale eddy motions on the fluxes of quasi-conservative atmospheric parameters.nIn recent year’s abundant material has been accumulated on the distribution of man-made and natural chemical and radioactive trace substances in the lower and upper atmosphere. Part 2 provides a short review of work by various authors dealing with the distribution of chemical tracers in the atmosphere. Radioactive tracers will be dealt with in Part 4 and hydrodynamic tracers in Part 3. The results from these studies are compared with those obtained from the investigations of atmospheric-motion patterns and of energy-flux processes given in Part 1. Chemical and radiochemical evidence thus may be used successfully to augment our understanding of the global transport processes in the atmosphere and of the general circulation, especially in regions outside and above the dense radiosonde networks.