ATM 6 Lecture 09

ATM 6 Lecture 09 - ATM 6 Lecture#9 Smog The Urban Syndrome...

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1 1 ATM 6, Lecture #9 Smog, The Urban Syndrome Part V: The State of U.S. Air Quality Cort Anastasio Atmospheric Science Program University of California - Davis 2 Has Air Quality in U.S. Improved? Over the past 20 - 30 years, the answer is “yes, generally”. (Although not in some areas.) Why the improvement? Reductions in emissions because of stricter standards. Data from www.epa.gov/air/aqtrnd00
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2 3 Is U.S. Air Quality Still a Problem? 4 Current U.S. Air Quality All data is from U.S. EPA (www.epa.gov/air/data) I: CO Nonattainment Counties as of 2006 Overall, we’re doing quite well with limiting CO pollution
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5 Current U.S. Air Quality II: NO 2 Nonattainment Counties as of 2006 All areas meet Federal NO 2 standard. But why might NO x still be a problem? 6 Current U.S. Air Quality III: O 3 Nonattainment Counties as of 2006 (8 hr Fed’l standard) • Overall, O 3 is still a serious problem in many U.S. cities • ~ ____ million people live in problem areas •W h
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This note was uploaded on 04/22/2008 for the course ATM 006 taught by Professor Anastasio during the Fall '07 term at UC Davis.

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ATM 6 Lecture 09 - ATM 6 Lecture#9 Smog The Urban Syndrome...

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