Filters: partyWithName: Boyer, E W (X) > partyWithName: Harlin, K (X)
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Dry deposition is a major component of total atmospheric nitrogen deposition and thus an important source of bioavailable nitrogen to ecosystems. However, relative to wet deposition, less is known regarding the sources and spatial variability of dry deposition. This is in part due to difficulty in measuring dry deposition and associated deposition velocities. Passive sampling techniques offer potential for improving our understanding of the spatial distribution and sources of gaseous and aerosol N species, referred to here as dry deposition. We report dual nitrate isotopic composition (δ15N and δ18O) in actively collected dry and wet deposition across the high-deposition region of Ohio, New York, and Pennsylvania....
Categories: Publication;
Types: Citation;
Tags: Isotopes,
atmospheric deposition,
dry deposition,
nit
Global inputs of NOx are dominated by fossil fuel combustion from both stationary and vehicular sources and far exceed natural NOx sources. However, elucidating NOx sources to any given location remains a difficult challenge, despite the need for this information to develop sound regulatory and mitigation strategies. We present results from a regional-scale study of nitrogen isotopes (δ15N) in wet nitrate deposition across 33 sites in the midwestern and northeastern U.S. We demonstrate that spatial variations in δ15N are strongly correlated with NOx emissions from surrounding stationary sources and additionally that δ15N is more strongly correlated with surrounding stationary source NOx emissions than pH, SO42-,...
Categories: Publication;
Types: Citation
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