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- W2143670244 endingPage "4379" @default.
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- W2143670244 abstract "Total airborne mercury (TAM) and carbon monoxide (CO) were measured in 22 pollution transport “events” at Mt. Bachelor Observatory (MBO), USA (2.8 km asl) between March 2004 and September 2005. Submicron particulate scattering (σsp), ozone (O3), and nitrogen oxides (NOy) were also measured and enhancement ratios for each chemical and aerosol species with CO were calculated. Events were categorized based on their source regions, which were determined by a combination of back trajectories, satellite fire detections, chemical and aerosol enhancement ratios, and meteorology. The mean ΔTAM/ΔCO values for each source region are: East Asian industrial (0.0046±0.0013ngm-3ppbv-1, n=10 events, 236 h), Pacific Northwest U.S. (PNW) biomass burning (0.0013±0.008ngm-3ppbv-1, n=7 events, 173 h), and Alaska biomass burning (0.0014±0.0006ngm-3ppbv-1, n=3 events, 96 h). The ΔTAM/ΔCO means from Asian long-range transport (ALRT) and biomass burning events are combined with previous estimates of CO emissions from Chinese anthropogenic, global biomass burning, and global boreal biomass sources in order to estimate the emissions of gaseous elemental mercury (GEM) from these sources. The GEM emissions that we calculate here are: Chinese anthropogenic (620±180ty-1), global biomass burning (670±330ty-1), and global boreal biomass burning (168±75ty-1), with errors estimated from propagating the uncertainty in the mean enhancement ratios and CO emissions. A comparison of our results with published mercury (Hg) emissions inventories reveals that the Chinese GEM emissions from this study are higher by about a factor of two, while our estimate for global biomass burning is consistent with previous studies." @default.
- W2143670244 created "2016-06-24" @default.
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- W2143670244 date "2007-07-01" @default.
- W2143670244 modified "2023-10-13" @default.
- W2143670244 title "Quantifying Asian and biomass burning sources of mercury using the Hg/CO ratio in pollution plumes observed at the Mount Bachelor observatory" @default.
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- W2143670244 doi "https://doi.org/10.1016/j.atmosenv.2007.01.058" @default.
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