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Titolo:
Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols
Autore:
Bond, TC; Anderson, TL; Campbell, D;
Indirizzi:
Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 Atmospher Sci, Seattle, WA 98195 USA Univ Washington, Dept Civil Engn & Mech, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 l Engn & Mech, Seattle, WA 98195 USA UnivAWashington, Joint Inst Study Atmosphere & Oceans, Seattle, WA 98195 US Univ Washington Seattle WA USA 98195 phere & Oceans, Seattle, WA 98195 US Univ Calif Davis, Crocker Nucl Lab, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Crocker Nucl Lab, Davis, CA 95616 USA
Titolo Testata:
AEROSOL SCIENCE AND TECHNOLOGY
fascicolo: 6, volume: 30, anno: 1999,
pagine: 582 - 600
SICI:
0278-6826(199906)30:6<582:CAIOFM>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTEGRATING PLATE METHOD; MARINE BOUNDARY-LAYER; ATMOSPHERIC AEROSOLS; OPTICAL-PROPERTIES; ELEMENTAL CARBON; MAUNA-LOA; COEFFICIENT; EXTINCTION; NEPHELOMETER; SCATTERING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Bond, TC Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 Sci, Seattle, WA 98195 USA
Citazione:
T.C. Bond et al., "Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols", AEROS SCI T, 30(6), 1999, pp. 582-600

Abstract

Data on light absorption by atmospheric particles are scarce relative to the need for global characterization. Most of the existing data come from methods that measure the change in light transmission through a filter on which particles are collected. We present a calibration of a recently developed filter-based instrument for continuous measurement of light absorption (model PSAP, Radiance Research, Seattle, WA) that has been incorporated in several measurement programs. This calibration uses a reference absorption determined as the difference between light extinction and light scattering byunaltered (suspended) particles. In addition, we perform the same calibration for two other common filter-based methods: an Integrating Plate and theHybrid Integrating Plate System, For each method, we assess the responses to both particulate light scattering and particulate light absorption. We find that each of the instruments exhibits a significant response to nonabsorbing aerosols and overestimates absorption at 550 nm by suspended particles by about 20-30 %. We also present correction factors for the use of the PSAP.

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Documento generato il 04/12/20 alle ore 03:02:14