Framework for Estimating Atmospheric Deposition

Atmospheric deposition may occur by dry particle deposition, wet deposition via rain and snow, and gaseous chemical partitioning into the water from the atmosphere. In this study, deposition to the water surface of the New York/New Jersey Harbor Estuary was calculated as the sum of dry particle deposition, wet deposition, and gaseous chemical absorption into the water column. Deposition was estimated at each of the sites surrounding the estuary (as shown in Fig. 27.1). The framework for converting the PCB and PAH concentrations in the atmosphere and rain to deposition is described in the next sections.

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