Author(s)

M.Z. Jacobson

Abstract

An Eulerian air pollution model was developed and used to study the effects of aerosols on solar radiation and air temperatures near the surface. The model, GATOR / MMTD, includes treatment of gas, aerosol, radiative, transport, and meteorological processes. The model was applied to the Los Angeles Basin for the period, August 27 - 28, 1987. Results indicate that the presence of aerosols decreased daytime surface solar radiation by approximately 9.7%. In addition, the presence of aerosols increased nighttime temperatures by about 0.77 K, decreased daytime temperatures by about 0.08 K, and increased overall temperatures (day plus night) by 0.43 K. However, most of the increase in daytime temperatures occurred during the first 24 hours. Over a longer simulation period, aerosols are expected to caus

Keywords