Bret A. Schichtel , William C. Malm , Graham Bench , Stewart Fallon , Charles E. McDade , Judith C. Chow , John G. Watson. Journal of Geophysical Rese...
Sources of Urban Contemporary Carbon Aerosol ... Fossil and contemporary fine particulate carbon fractions at 12 rural and urban sites in the United States.
John A. Cooper*. Oregon Graduate Center, Beaverton, Oregon 97006. Lloyd A. Currie and GeorgeA. Klouda. National Bureau of Standards, Washington, D.C. ...
Assessment of Contemporary Carbon Combustion Source Contributions to Urban. Air Particulate Levels Using Carbon- 14 Measurements. John A. Cooper*.
Environmental Science & Technology .... is relevant for understanding potential spatial heterogeneities in aerosol-cloud interactions across the Arctic.
The mean contribution of fossil sources to OC for the campaign was stable at 38 ± 8% (0.04â0.32 μg mâ3). Samples were also analyzed for organic tracers, ...
Sep 1, 2015 - To quantify the contributions of fossil and biomass sources to the wintertime Arctic aerosol burden source apportionment is reported for elemental (EC) and organic carbon (OC) fractions of six PM10 samples collected during a wintertime
Sep 1, 2015 - Source Contributions to Wintertime Elemental and Organic Carbon in the Western Arctic Based on Radiocarbon and Tracer Apportionment.
Sep 1, 2015 - Financial support provided by the United States Department of Energy ...... R. C.; Erickson , M. H.; Fast , J. D.; Floerchinger , C.; Flowers , B. A.; ...
Apr 21, 2017 - ABSTRACT: The rapid expansion of urban land cover is associated with negative impacts on stream ecosystems. Elevated.
equivalent best estimate for the summer mobile source emissions. Use of oxygenated fuels in snowmobiles was found to reduce CO emissions by 13.2 ( 6.5% ...
Assessment of Contemporary Carbon Combustion Source Contributions to Urban Air Particulate Levels Using Carbon- 14 Measurements John A. Cooper* Oregon Graduate Center, Beaverton, Oregon 97006
Lloyd A. Currie and George A. Klouda National Bureau
of Standards, Washington, D.C. 20234
w Measurement of carbon-14 activities with new low-level counting methods has been demonstrated to be an effective tool for assessing the contribution of contemporary carbon combustion sources to the mass collected with typical highvolume air samplers. This study represents the first time that radiocarbon measurements have been applied to fine particles (
