Do the dust or pollution levels ever reach hazardous conditions?
For the people living in Asia, these dust and pollution levels are associated with health impacts. Once these get transported to North America, the levels are much lower. The highest we have seen at ground level is from the 2001 dust event. In this event, PM10 and PM2.5 reached approximately 2/3 of the US air quality standard at several sites along the west coast (see Jaffe, Snow and Cooper 2003 paper in publication list). This is a level associated with health effects for some people. The 2001 dust event was similar to, but larger, then the event we saw in 1998 (see Husar et al paper in publication list).
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- Do the dust or pollution levels ever reach hazardous conditions?
