Importance of heterogeneous processes to tropospheric chemistry - Studies with a one-dimensional modelA one-dimensional, time-dependent model of tropospheric air composition is developed which incorporates several heterogeneous physical and chemical processes. The model includes the interaction of gases, aerosols, and hydrometeors through the physical mechanisms of nucleation, condensation, evaporation, coagulation, coalescence, and deliquescence. Precipitation, sedimentation, and dry deposition act to remove material from the atmosphere, while chemical transformations occur both in the vapor and the condensed phases. The model also incorporates the sources and vertical diffusion of gases and particles, as well as changes in the solar intensity caused by light-scattering from aerosols and clouds. Preliminary simulations made using this model indicate that rainout and washout processes strongly influence the distributions of tropospheric gases and aerosols under certain conditions.
Document ID
19830043982
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Turco, R. P. (R & D Associates Marina del Rey, CA, United States)
Toon, O. B. (R and D Associates Marina Del Rey, CA, United States)
Whitten, R. C. (R and D Associates Marina Del Rey, CA, United States)
Keesee, R. G. (NASA Ames Research Center Moffett Field, CA, United States)
Hamill, P. (Systems and Applied Sciences Corp. Palo Alto, CA, United States)