التفاصيل البيبلوغرافية
| العنوان: |
Estimation of mercury emissions from forest fires, lakes, regional and local sources using measurements in Milwaukee and an inverse method |
| المساهمون: |
de Foy, B. (B. de Foy) (authoraut), Wiedinmyer, Christine (Christine Wiedinmyer) (authoraut), Schauer, J. (J. J. Schauer) (authoraut) |
| بيانات النشر: |
Copernicus Publications |
| مصطلحات موضوعية: |
Mercury, emissions, Mid-West, sources, fires, incerse modeling, envir, geo |
| الوصف: |
Gaseous elemental mercury is a global pollutant that can lead to serious health concerns via deposition to the biosphere and bio-accumulation in the food chain. Hourly measurements between June 2004 and May 2005 in an urban site (Milwaukee, WI) show elevated levels of mercury in the atmosphere with numerous short-lived peaks as well as longer-lived episodes. The measurements are analyzed with an inverse model to obtain information about mercury emissions. The model is based on high resolution meteorological simulations (WRF), hourly back-trajectories (WRFFLEXPART) and a chemical transport model (CAMx). The hybrid formulation combining back-trajectories and Eulerian simulations is used to identify potential source regions as well as the impacts of forest fires and lake surface emissions. Uncertainty bounds are estimated using a bootstrap method on the inversions. Comparison with the US Environmental Protection Agency’s National Emission Inventory (NEI) and Toxic Release Inventory (TRI) shows that emissions from coal-fired power plants are properly characterized, but emissions from local urban sources, waste incineration and metal processing could be significantly under-estimated. Emissions from the lake surface and from forest fires were found to have significant impacts on mercury levels in Milwaukee, and to be underestimated by a factor of two or more. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| العلاقة: |
https://doi.org/10.5194/acp-12-8993-2012Test |
| DOI: |
10.5194/acp-12-8993-2012 |
| الإتاحة: |
https://doi.org/10.5194/acp-12-8993-2012Test |
| حقوق: |
undefined |
| رقم الانضمام: |
edsbas.100307A9 |
| قاعدة البيانات: |
BASE |
