Photoacoustic insight for aerosol light absorption aloft from meteorological aircraft and comparison with particle soot absorption photometer measurements: DOE Southern Great Plains climate research facility and the coastal stratocumulus imposed perturbation experiments
Author
Arnott, W. Patrick
Walker, John W.
Moosmüller, Hans
Elleman, Robert A.
Jonsson, Haflidi H.
Buzorius, Gintautas
Conant, William C.
Flagan, Richard C.
Seinfeld, John H
Date
2006Metadata
Show full item recordAbstract
Aerosol light absorption can be intense close to local sources such as wildland and oil
fires, with smoke that disperses into the boundary layer and, with enough lift, into the
upper atmosphere where it may be transported around the globe. Filter-based methods
such as the Particle Soot Absorption Photometer (PSAP) are most commonly used to
quantify aerosol light absorption aloft. This paper reports first measurements of aerosol
light absorption aloft with photoacoustic instrumentation (PA). Three examples of aerosol
light absorption are presented. The first one illustrates a case of detached layers aloft
arising from intercontinental, interoceanic transport of smoke from wildland fires in
Siberia to the North American continent and the measurement campaign held at the
Department of Energy Atmospheric Radiation Measurement Program Climate Research
Facility in north central Oklahoma. Then, two examples of intense local fire smoke light
absorption from the Coastal Stratocumulus Imposed Perturbation Experiment near
Marina, California, USA, are presented. The first local fire was an oil fire burning in a
storage tank near Moss Landing, California, USA, and smoke from this fire was very dark,
indicating a low single scattering albedo. By contrast, the second local fire was
predominantly burning wood, vegetation, and structures near Fort Ord in Marina,
California, USA, and the smoke was very bright, indicating a high single scattering
albedo. In all examples, PA measurements at 676 nm were compared with those from a
PSAP modified to measure at three wavelengths, including 660 nm.
Description
Journal of Geophysical Research, Vol. 111, No. D5, D05S02
The article of record as published may be located at http://dx.doi.org/10.1029/2005JD005964.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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