Estimates of wet deposition

The most recent estimates of wet deposition are from a synthesis of the IADN data along with all compiled research data current to 1992.18 These estimates are shown in Table 2. 

Figure 6. Estimated contribution to wet deposition of sulfate from S(>2 emissions in the eastern U.S. and southeastern Canada based on 1978 meteorology. The wet deposition index is the deposition rate if meteorology were the same in each year. The percentage change shown on each line corresponds to the calculated reduction in wet deposition from emission change, with meteorological conditions assumed to be uniform from year to year. The expected range of uncertainty in estimate of wet deposition using actual precipitation rather than 1978 levels are indicated by squares and vertical bars. (Reproduced with permission from Ref. 4. Copyright 1984 APCA).

Kroll G and Winkler P (1988) Estimation of wet deposition via fog. In Grefen K, Ldbel J, eds. Environmental Meteorology, pp. 227-236. Kluwer Acad. Pubk, Dordrecht. 

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