Other
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.a53h..08j&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #A53H-08
Other
0345 Pollution: Urban And Regional (0305, 0478, 4251)
Scientific paper
Management of air pollutants and greenhouse gases requires accurate emission inventories. However all methods to develop inventories make certain assumptions and require continuous validation and updating. Starting in 2004, we have made nearly continuous observations of a variety of atmospheric pollutants at the summit of Mt. Bachelor at 2.7 km asl in central Oregon. From these data we have identified numerous pollution plumes (episodes) from Asia industrial and biomass burning sources. We have used these data to quantify emissions of mercury from these sources. This is done by examining the Hg/CO ratio and by using the known CO emissions from the source region. This method makes several assumptions which we will discuss. For the Asian industrial source, our results indicate that the total emissions are approximately 1500 metric tons/year, about two times the value in several industrial emission inventories. Possible causes for this discrepancy are errors in the emission inventory, re-emission of previously deposited mercury, and/or natural land sources. We have applied a similar methods to quantify mercury from biomass burning sources. While we have not yet applied this method to other pollutants, in principle, there are no obstacles to doing this. In particular, global treaties for mercury and/or greenhouse gases will require adequate monitoring to verify compliance. We propose that observations from a US site, such as Mt. Bachelor, could be utilized to verify future treaty compliance for emissions coming from the Asian continent.
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