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FIELD INVESTIGATION OF SULFITE FLUXES TO A DECIDUOUS FOREST
Citation:
Wesely, M. AND e. al. FIELD INVESTIGATION OF SULFITE FLUXES TO A DECIDUOUS FOREST. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/294 (NTIS PB90197716), 1989.
Description:
An intensive investigation of particulate sulfur fluxes to a deciduous forest was conducted at Oak Ridge, Tennessee, during May 1983. ddy 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. he measured deposition velocities (vd) of particulate sulfur peaked at about 1 cm s-1 in daytime, but dropped to near zero at night, with a long-term average of about 0.6 cm s-1. These values of vd are consistent with similar measurements taken previously over different surfaces. easurements and analyses indicate that the flux divergence of particulate sulfur should have caused an error no greater than +0.05 cm s-1 in vd estimates. or very small particles (less than 0.1 um diameter), measured values of vd 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.
