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Thunderstorms Increase Mercury Wet Deposition
Environmental Science & Technology, 2016Mercury (Hg) wet deposition, transfer from the atmosphere to Earth's surface by precipitation, in the United States is highest in locations and seasons with frequent deep convective thunderstorms, but it has never been demonstrated whether the connection is causal or simple coincidence.
Christopher D, Holmes +6 more
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The Global Distribution of Acidifying Wet Deposition
Environmental Science & Technology, 2002The 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 +2 more
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Wet deposition of tracer-marked aerosol
Journal of Aerosol Science, 1990Abstract To study the import of the influential parameters on the efficiency of below-cloud-scavenging a tracer method for field experiments has been developed. To this purpose fluorescent aerosol is released at precipitation events. Precipitation samples are taken and the particle concentrations in the sample determined.
Frank, G., Tschiersch, J., Behrens, H.
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Wet deposition of polycyclic aromatic hydrocarbons in The Netherlands
Science of The Total Environment, 1986The concentrations of 11 polycyclic aromatic hydrocarbons (PAH) in rainwater at four locations in the Netherlands in 1983 are reported. From literature data for these PAH in air, scavenging ratios were calculated. For PAH predominantly adsorbed on aerosols these scavenging ratios are in the range 3-13 X 10(4). For phenanthrene the scavenging ratios are
den Hollander, HArivm +3 more
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Wet deposition of phosphorus in Florida
Atmospheric Environment, 2002Abstract 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 +3 more
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On the episodic nature of wet deposited sulphate and acidity
Atmospheric Environment (1967), 1984Daily sampling of acidity and sulphate in rain, air concentrations of SO2 and aerosol SO2−4, and climatological variables for the period 1977 to 1981 at a site in southern Scotland are analysed. The properties of frequency distributions for wet deposited acidity, sulphate and rainfall, and the episodicity of each, are discussed. Up to 40% of annual wet
Fowler, David, Cape, Neil
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WET ACID DEPOSITION IN COLORADO
Physical Geography, 1991Precipitation and wet atmospheric deposition patterns were investigated for Colorado for the hydrologic year 1985. Above average precipitation for the year probably gave rise to higher than average deposition of sulfates and nitrates but this potential varied by season across the state and was higher at higher elevations.
M. C. Silverstein, David Greenland
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Wet deposition of elemental carbon in Lithuania
Science of The Total Environment, 1999Elemental carbon (EC) was measured in monthly precipitation samples at 14 rural sites in Lithuania from December 1986 to June 1990. The amount of EC in the sample was determined by the light reflectance method after a procedure including the filtration through a 0.2-micron polyamide membrane filter, the chemical digestion of biogenic material and the ...
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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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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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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.
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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.
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