Results 251 to 260 of about 305,273 (287)

The Global Distribution of Acidifying Wet Deposition

Environmental Science & Technology, 2002
The acid-base status of precipitation is a result of a balance between acidifying compounds--mainly oxides of sulfur and nitrogen--and alkaline compounds--mainly ammonia and alkaline material in windblown soil dust. We use current models of the global atmospheric distribution of such compounds to estimate the geographical distribution of pH in ...
Henning, Rodhe, Frank, Dentener, Michael, Schulz   +2 more
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Composition of wet deposition in Kaynarca, Turkey

Environmental Pollution, 2002
In this work, composition of wet deposition in Kaynarca, Turkey is studied by collecting precipitation samples during more than a 2-year period. August 1993-November 1995. Concentrations of the main cations Na+, Mg2+, Ca2+, K+, NH4+ and the main anions Cl-, NO3- and SO4(2-) together with pH were studied.
Cengiz, Okay, Billent O, Akkoyunlu, Mete, Tayanç   +2 more
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Cost effective management of wet sulfate deposition

Water, Air, & Soil Pollution, 1986
The purpose of the paper is to present the results of a study that assesses the cost and environmental implications of management options for controlling acid rain. Specifically, the paper illustrates the application of a mathematical programming model which identifies sulphur dioxide emission reductions in eastern North America such that total ...
A. Castel, C. Griffith
openaire   +1 more source

Aerial contamination of fruit through wet deposition and particulate dry deposition

Journal of Environmental Radioactivity, 2001
The current state of knowledge concerning the processes and pathways which lead to the contamination of fruit crops by non-gaseous airborne contaminants is reviewed. Given the wide range of fruit canopies which occur, it is necessary to look for generic factors which affect the contribution of each of these processes and pathways to distribution ...
R P, Kinnersley, L K, Scott
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Shrinking a wet deposition network

Atmospheric Environment, 1996
Abstract Suppose that we must delete stations from a monitoring network. Which stations should be deleted if we wish the remaining network to have the smallest possible trend estimate variances? We use the spatial-temporal model described in Oehlert (1993, J. Am. Statist.
openaire   +1 more source

Wet deposition of phosphorus in Florida

Atmospheric Environment, 2002
Abstract Wet deposition of phosphorus was measured at 10 sites across Florida originally established as part of the Florida Atmospheric Mercury Study conducted between 1992 and 1996. Monthly integrated samples were collected and analyzed using a total analytical protocol that incorporated “clean lab” conditions for sample equipment preparation and ...
C.D. Pollman, W.M. Landing, J.J. Perry, T. Fitzpatrick   +3 more
openaire   +1 more source

Wet Deposition of NoX

1982
ABSTRACT Successive stages of the wet removal process of NO X and the reaction products of NO X are discussed. The relative importance of these stages is indicated. Trends and seasonal trends of the wet deposition of nitrate are shown. The contribution of NO X to the acidity of precipitation is discussed and recommendations are made for future ...
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Dry and Wet Deposition

1990
Deposition phenomena are the way in which the atmosphere cleans itself. The process is efficient as only a few gases (most notably CO 2) show signs of global increase in spite of the large emission of pollutants from both natural and anthropogenic sources.
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Wet Deposition of Heavy Metals

1989
Macroscale and microscale processes of removal of atmospheric metals from the atmosphere by precipitation and fog water deposition are described. Methodologies for measuring wet deposition are critically examined. Finally, pitfalls in using historical measurements of metals deposition and scavenging ratios to estimate removal are discussed.
L. A. Barrie, R. S. Schemenauer
openaire   +1 more source

Wet and Dry Deposition

1982
This contribution reviews the subject of wet and dry deposition. The various precipitation scavenging processes, and factors which influence them are described. A brief quantitative description of scavenging rate coefficients and washout ratios is given.
openaire   +1 more source