mobile fuel in populated areas of the northern hemisphere, as has the atmospheric lead concentration over the central Pacific Ocean (Murozumi et al.,
1969; Chow et al., 1969; Hoffman et al., 1972), and the North Atlantic (Duce
| et al., 1976a).
High concentrations of atmospheric vanadium in particles
in the tropospheric westerlies over the North Atlantic are believed to result
from the burning of heavy fuel oils rich in vanadium porphyrin complexes on
the North American continent (Duce and Hoffman, 1976).
DDT and PCB are known
to be present in the atmosphere over the North Atlantic in both the vapor
phase and on particles (Bidleman and Olney, 1974; Harvey and Steinhauer,
1974).
It is clear that the long-range atmospheric transport of many sub-
stances, both gaseous and particulate, has been well documented.
While we have now obtained some information on the concentrations and
time variations of some of these substances in the marine atmosphere in locations such as Bermuda and Oahu, Hawaii, (and a few measurements from Samoa)
as a result of studies supported by the NSF-IDOE/Pollutant Transport Program
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(PTP), there has as yet been virtually no information obtained on the flux
of these substances into the ocean by rainfall, dry deposition and direct
gas exchange.
Until these measurements are made it will be impossible to
assess the importance of the atmospheric transport of these substances in
terms of their environmental cycles.
The increasing interest in atmospheric transport of both anthropogenic
and natural trace substances to marine areas was highlighted by a recent workshop sponsored by SCOR and the U.S. National Academy of Sciences.
This work-
shop on "Tropospheric Transport of Pollutants to the Ocean" was held in Miami
in December, 1975.
The results of the deliberations of participants at this
workshop will be published later this year by the NAS.
Discusstons at the