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Semivolatile Particulate Organic Material Southern Africa during SAFARI 2000During August and September 2000, the University of Washington's Cloud and Aerosol Research Group (CARG) with its Convair-580 research aircraft participated in the Southern African Fire-Atmosphere Research Initiative (SAFARI) 2000 field study in southern Africa. Aboard this aircraft was a Particle Concentrator-Brigham Young University Organic Sampling System (PC-BOSS), which was used to determine semivolatile particulate material with a diffusion denuder sampler. Denuded quartz filters and sorbent beds in series were used to measure nonvolatile and semivolatile materials, respectively. Results obtained with the PC-BOSS are compared to those obtained with conventional quartz-quartz and Teflon-quartz filter pack samplers. Various 10-120 min integrated samples were collected during flights through the h e troposphere, in the atmospheric boundary layer, and in plumes from savanna fires. Significant fine particulate semivolatile organic compounds (SVOC) were found in all samples. The SVOC was not collected by conventional filter pack samplers and therefore would not have been determined in previous studies that used only filter pack samplers. The SVOC averaged 24% of the fine particulate mass in emissions from the fires and 36% of the fine particulate mass in boundary layer samples heavily impacted by aged emissions from savanna fires. Concentrations of fine particulate material in the atmospheric mixed layer heavily impacted by aged savanna frre emissions averaged 130 micrograms per cubic meter. This aerosol was 85% carbonaceous mated.
Document ID
20050176057
Document Type
Reprint (Version printed in journal)
Authors
Eatough, D. J. (Brigham Young Univ. Provo, UT, United States)
Eatough, N. L. (Brigham Young Univ. Provo, UT, United States)
Pang, Y. (Brigham Young Univ. Provo, UT, United States)
Sizemore, S. (Brigham Young Univ. Provo, UT, United States)
Kirchstetter, T. W. (California Univ., Lawrence Berkeley National Lab. Berkeley, CA, United States)
Novakov, T. (California Univ., Lawrence Berkeley National Lab. Berkeley, CA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Publication Information
Publication: Journal of Geophysical Research
Volume: 108
Issue: D13
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-9022
Distribution Limits
Public
Copyright
Other