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Read Full Article (file size: 330674 bytes) Cited by
GEOPHYSICAL RESEARCH LETTERS,
VOL. 35,
L19808,
doi:10.1029/2008GL034894,
2008
Response of California temperature to regional anthropogenic aerosol changes
T. Novakov
Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
T. W. Kirchstetter
Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
S. Menon
Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
J. Aguiar
Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
Abstract
In this paper, we compare constructed records of concentrations of black carbon (BC) - an indicator of anthropogenic aerosols
- with observed surface temperature trends in California. Annual average BC concentrations in major air basins in California
significantly decreased after about 1990, coincident with an observed statewide surface temperature increase. Seasonal aerosol
concentration trends are consistent with observed seasonal temperature trends. These data suggest that the reduction in anthropogenic
aerosol concentrations contributed to the observed surface temperature increase. Conversely, high aerosol concentrations may
lower surface temperature and partially offset the temperature increase of greenhouse gases.
Received 3
June
2008;
accepted 26
August
2008;
published 4
October
2008.
Keywords: aerosols.
Index Terms: 0305 Atmospheric Composition and Structure: Aerosols and particles (0345, 4801, 4906); 0345 Atmospheric Composition and Structure: Pollution: urban and regional (0305, 0478, 4251); 0360 Atmospheric Composition and Structure: Radiation: transmission and scattering.
Read Full Article (file size: 330674 bytes) Cited by
Citation: Novakov, T., T. W. Kirchstetter, S. Menon, and J. Aguiar
(2008),
Response of California temperature to regional anthropogenic aerosol changes,
Geophys. Res. Lett.,
35,
L19808,
doi:10.1029/2008GL034894.
Copyright 2008 by the American Geophysical Union.
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