Results 261 to 270 of about 76,360 (309)

Deposition of atmospheric pollutants on forests

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1989
Abstract Forests have long been considered as efficient sinks for atmospheric pollutants. The potential for large rates of deposition is provided by the turbulent structure of air above and within forest canopies. Large rates of deposition of pollutant gases, however, are only found for the very reactive gases HNO3, HCl and NH3.
Fowler, D., Cape, J.N., Unsworth, M.H.
openaire   +2 more sources

Atmospheric deposition of35S

Journal of Radioanalytical and Nuclear Chemistry, 1999
The35S content in atmospheric deposition, aerosol and rain water was determined about every 10 days for a year with7Be,32P and some stable elements. Average35S concentrations were 110 mBq·m−2·d−1 for atmospheric deposition, 0.078 mBq·m−3 for aerosol in surface air and 45 mBq·l−1 for rain water.
S. Osaki, Y. Tagawa, T. Chijiiwa, S. Sugihara, Y. Maeda   +4 more
openaire   +1 more source

Atmospheric Deposition to Forest Ecosystems

2013
Abstract Atmospheric deposition is an important source of macro- and micronutrients to the forest and also the most important channel for input of long-range air pollutants. This chapter describes the methods used for the determination of atmospheric deposition, especially in rain and snow, in forest ecosystems, including samplers for open-field bulk
Karin Hansen, Anne Thimonier, Nicholas Clarke, Jeroen Staelens, Daniel Zlindra, Peter Waldner, Aldo Marchetto   +6 more
openaire   +3 more sources

Atmospheric Nitrogen Deposition

Science, 1997
David A. Wedin and David Tilman (Reports, 6 Dec., p 1720 ) show that increased nitrogen inputs to terrestrial ecosystems might cause smaller increases in the capacity of those ecosystems to store carbon than expected.
Bruce A. Hungate, Thomas E. Jordan, Robert B. Jackson, Bert G. Drake   +3 more
openaire   +1 more source

Decline in atmospheric mercury deposition in London

Journal of Environmental Monitoring, 2009
Bulk atmospheric deposition samples were continuously collected using a standard IVL-type mercury (Hg) bulk deposition collector from January 1999 to December 2005 in order to monitor Hg deposition in London. The volume-weighted annual Hg concentrations in deposition gradually declined from 76.0 ng L(-1) in 1999 to 43.8 ng L(-1) in 2005 ...
Handong, Yang, Alison, Berry, Neil, Rose, Torunn, Berg   +3 more
openaire   +2 more sources

Atmospheric deposition in complex forest landscapes

Boundary-Layer Meteorology, 1994
Atmospheric dry deposition in eight forest edges was estimated by means of throughfall and bulk precipitation measurements. Dry deposition was found to be enhanced in the first 5 edge heights. Deposition enhancement was strongly dependent on forest density, edge aspect and on the gas or particle under consideration.
Draaijers, GPJ, van Ek, R, van Bleuten, W   +2 more
openaire   +2 more sources

Atmospheric deposition to watersheds in complex terrain

Hydrological Processes, 1997
Single collection stations for wet or bulk deposition are generally inadequate to describe atmospheric inputs to watersheds in complex terrain. Atmospheric deposition is delivered by wet, dry and cloud deposition processes, and these processes are controlled by a wide range of landscape features, including canopy type and structure, topographic ...
GARY M. LOVETT, JONATHAN J. BOWSER, ERIC S. EDGERTON   +2 more
openaire   +1 more source

Atmospheric Pressure Plasma Deposition of Polyfuran

Journal of Macromolecular Science, Part A, 2007
The atmospheric pressure radiofrequency (RF) plasma polymerization of furan was carried out with the objective of synthesizing polyfuran thin film. The structure, compositions and morphology of the plasma deposited polyfuran film were investigated by Fourier transform infrared (FTIR), atomic force microscopy (AFM), ultraviolet‐visible absorption ...
Gok, Aysegul, Oksuz, Lutfi
openaire   +3 more sources

Atmospheric Deposition of Metals to Forest Vegetation

Science, 1982
Atmospheric deposition during the growing season contributes one-third or more of the estimated total flux of lead, zinc, and cadium from the forest canopy to soils beneath an oak stand in the Tennessee Valley but less than 10 percent of the flux of manganese.
S E, Lindberg, R C, Harriss, R R, Turner
openaire   +2 more sources

Atmospheric deposition of nutrients to the North Atlantic Basin

Biogeochemistry, 1996
Atmospheric chemical models are used to estimate the deposition rate of various inorganic oxides of nitrogen (NOy), reduced nitrogen species (NHx) and mineral dust to the North Atlantic Ocean (NAO). The estimated deposition of NOy to the NAO (excluding the coastal ocean) and the Caribbean is 360 × 109 Moles-N m-2 yr-1 (5.0 Tg N); this is equivalent to ...
Prospero, J.M., Barrett, K., Church, T., Dentener, F., Duce, R.A., Galloway, J.N., Levy Ii, H., Moody, J., Quinn, P.   +8 more
openaire   +2 more sources