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RECORD NUMBER: 22 OF 42

OLS Field Name OLS Field Data
Main Title Field Investigation of Sulfite Fluxes to a Deciduous Forest.
Author Hicks, B. B. ; Matt, D. R. ; McMillen, R. T. ; Womack, J. D. ; Wesely, M. L. ;
CORP Author Argonne National Lab., IL. Biological, Environmental, and Medical Research Div. ;National Oceanic and Atmospheric Administration, Oak Ridge, TN. Air Resources Labs. ;Oak Ridge National Lab., TN. Environmental Sciences Div.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.;Department of Energy, Washington, DC.
Publisher c1989
Year Published 1989
Report Number DE-AC05-84OR21400; EPA/600/J-89/294;
Stock Number PB90-197716
Additional Subjects Sulfates ; Atmospheric diffusion ; Flux(Rate) ; Field tests ; Error analysis ; Particle size distribution ; Canopies ; Reprints ; Forests ; Air pollution effects(Plants) ; Particulate sampling ; Air pollution sampling ; Dry methods ; Environmental transport
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB90-197716 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/27/1990
Collation 11p
Abstract
An intensive investigation of particulate sulfur fluxes to a deciduous forest was conducted at Oak Ridge, Tennessee, during May 1983. Eddy correlation methods were used to measure fluxes of submicron particulate sulfur, of submicron particles in three different size ranges, and of ozone above the forest canopy. The measured deposition velocities (v(sub d)) of particulate sulfur peaked at about 1 cm/s in daytime, but dropped to near zero at night, with a long-term average of about 0.6 cm/s. These values of v(sub d) are consistent with similar measurements taken previously over different surfaces. Measurements and analyses indicate that the flux divergence of particulate sulfur should have caused an error no greater than + or - 0.05 cm/s in v(sub d) estimates. For very small particles (less than 0.1 micrometer diameter), measured values of v(sub d) were similar to those for particulate sulfate, but deposition velocities for particles in the accumulation size range decreased as particle size increased, and upward components of fluxes were found in daytime convective conditions. (Copyright (c) American Geophysical Union.)