Simulating Aerosols And Their Feedback Effects On
Temperatures In A Polluted Urban Environment
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
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