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[quote=Anonymous][quote=Anonymous]Have there been environmental studies that quantified the chemical impact of being near the flight path along the Potomac? I’m not arguing that exposure is not happening, I just wonder how much it disperses and affects the entire region when planes are flying overhead at 2000 feet. [/quote]

Here’s one scientific and one press report of many: https://pubs.acs.org/doi/10.1021/acs.est.0c05933 and https://www.seattletimes.com/business/boeing-aerospace/little-understood-unregulated-particles-pollute-neighborhoods-under-sea-tac-flight-paths-uw-study-finds/

The big takeaways seem to be:
Ultrafine particles from the aircraft are finer/different from the “regular” pollution particles and detrimental to health in part because they can traverse lung tissues and enter the bloodstream affecting all the major organs including the brain, causing high blood pressure, cardiovascular issues, dementia, cognitive difficulties, CVD, cancer etc.
Under the flight path, they are “pushed down” fast to the ground and into the people without the sufficient time to meaningfully disperse which would happen more at higher altitudes (the worst seems to be the flight path up to about 10-15 miles from the airport)
You could get a similar exposure from a major roadway but it would need to be masses of diesel traffic and you would need to stand in the middle of it the whole day (which no one does), while under the flight path you’re breathing even finer particles getting in deeper into the airways just by breathing (whole day every day and night)[/quote]

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