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Practical aspects of measuring dry deposition

Author
Wesely, M. L.
Published
United States : [publisher not identified], 1985
Springfield, Va.: National Technical Information Service, [approximately 1985]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Hicks, B. B.

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Summary
The dry deposition of atospheric trace substances is the transfer of substances to the surface of the earth by all processes excluding those aided directly by precipitation. These include the vertical turbulent transfer of trace gases and fine particles and the gravitational settling of large particles in the lower atmosphere. To address the dry deposition of acidic substances, we need to consider the major sulfur and nitrogen substances, which include SO2, HNO3 vapor, NO2, particulate sulfate, and particulate nitrate. Others often considered are NO, PAN, and organic sulfates. Ozone should be added to this list because it is a substance that is often linked to harmful effects on surface vegetation and materials, and its effects are frequently intermingled with effects of airborne sulfur and nitrogen substances. Here, our discussion will be confined mainly to SO2, HNO3, NO2, particulate sulfur, prticulate nitrate and O3. These contaminants do not include all substances of general importance in evaluating acid deposition, because the numerous substances involved in chemical transformations that modify the acidic chemical species before being deposited are not addressed. 9 refs., 2 tabs.
Report Numbers
DE85018465; CONF-8504158-2
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: W-31-109-ENG-38
OSTI Identifier 5223808
Research organization: Argonne National Lab., IL (USA).
Research organization: National Oceanic and Atmospheric Administration, Oak Ridge, TN (USA). Atmospheric Turbulence and Diffusion Lab.
View MARC record | catkey: 47358293