Resuspension of particulate chemical species at forested sites

Abstract

The resuspension rates of particulate chemical species have been estimated using aerodynamic surrogate surfaces (symmetrical airfoils) at a mixed deciduous forest site, and also using throughfall sampling at a loblolly pine forest site. The airfoils were placed above, within, and below the crown of the deciduous canopy to determine the vertical variation of deposition and resuspension. The resuspension rates of SO 4 2- , C 2 O 4 2- , and Ca from the airfoils are estimated to be on the order of 10 -6 -10 -5 s -1 .