Secondary Organic Aerosols

OnAir: Research Underdogs Fill Atmospheric Blind Spot (EPA Greenversation, Apr. 6, 2010)

Also discussed here: Carnegie Mellon Researchers Urge Regulators To Rethink Strategies for Controlling Soot Emissions (Carnegie Mellon News, Mar 1, 2007)

And here: The Missing Source of Secondary Organic Aerosols (SOAs) (Science Quick Picks, Mar. 7, 2007)

Key Quotes:

“What we actually observe in the atmosphere is a factor of 3 – 100 times more than the SOA traditional models predict,”

“new chemical processes that occur after soot and gaseous pollutants are emitted from cars and trucks, changing the chemical and physical properties of the soot particles and creating new particulate matter.”

” this chemical processing leads to more particulate matter in the air, meaning that regulators are likely underestimating how sources such as cars and trucks contribute to pollution,”

“A second important finding is that the properties of this new particulate matter are different than we previously thought and potentially more toxic”

“We’re seeing that urban pollution doesn’t stay contained in the cities, but impacts rural and other downwind areas, creating even more complicated issues for regulators,”

“For the longest time, particulate matter has been the least understood component of the climate system.”

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4 Responses

  1. Thank you so much for including my website on your links. I have added a link to your site on my Public Transportation Resources page
    Please let me know if the wording works for you or if you would prefer wording changes.
    Thanks again
    David Waight

    • The wording is fine thanks but, as a Canadian, I wonder if the site is put in the right place under “United States Resources” as I try to include as information on traffic/health/pollution from such places as Australia, the UK, the E.U. (and Canada) as well as the U.S.A.

      • You’re right and I’m sorry. How about if I put it under both Canada and United States. My site at the moment concentrates on North American public transportation. In the future, I’m considering some links to other parts of the world and I will add in to that page as well.

  2. That’s fine David- I wasn’t complaining, only indicating a wider audience than the USA

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