Day4 Plenary 02c Low - United States Environmental ... · based on 2008‐2010 design values. ......
Transcript of Day4 Plenary 02c Low - United States Environmental ... · based on 2008‐2010 design values. ......
South Coast Air Basin Days Exceeding Ozone Standards, 1976-2009*
200
250
eedin
g
100
150
Days
Exce
0
50Basin
-D
01976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008
Former 1-Hour Federal Ozone Standard
Former (1997) 8-Hour Federal Ozone Standard (0.08 ppm)
*Based on preliminary data for 2009.
Ozone ExposuresOzone Exposures8‐Hour NAAQS = 75 ppb
San Joaquin Valley10.5%
Sacramento Valley5.6%
San Diego5.0%
Rest of Calif
Nationwide
5 Rest of Calif3.2%Houston/Galvest
on4.4%
Dallas/Ft Worth4 1%
South Coast48.1%
4.1%Philadelphia/Wil
mington3.9%
New York/New Jersey
R t f J y3.8%
Atlanta1.3%Phoenix1 0%
Rest of Nation9.2%
1.0%
* Population‐weighted incremental exposure to ozone above the 8‐Hour NAAQS (> 75 ppb),based on 2008‐2010 design values
SCAQMD PAMS Measurements
Santa Clarita
Type I Type IIIType II Upper Air Meteorology
Los Angeles
San Bernardino
Crestline
FontanaRedlands
Upland
Ontario FS Rubidoux
Big Bear
Pico Rivera
Pomona
Glendora
Azusa
Burbank Reseda
WSLAPasadena
Lynwood
•Ozone•NO/ NO2/ NOy
Anaheim
RiversideSCAQMD Air Monitoring Network
SOUTH COAST AIR BASIN (SCAB) COUNTY LINES
AIR MONITORINGSTATION
Long Beach Norco
Perris
Lake ElsinoreMSVJCosta Mesa
La HabraLAXH
Pico Rivera
Banning
Indio
Palm Spr.
SLB
MLOMMRLM
Lynwood
Compton
/ / y•CO•Speciated VOC•Carbonyl
M ILES
0 25
Costa Mesa
February 1996 Version
•Carbonyl •Meteorology
PAMS Air Quality Data Usage
Ozone precursor assessmentComparisonsCo pa so sTrendsControl evaluationS iSource categories
Source ApportionmentEmission Inventory (STI July Emission Inventory Evaluation/Reconciliation
(STI, July 2005)
(STI, August 2005)
Al f Ai P ll S dAloft Air Pollutant Study
O d d fOzonesondes and Aircraft Measurements
Evaluated offshore regional air quality model boundary air quality model boundary conditionsShipping lane emissions assessmentAloft Ozone Hydrocarbons Aloft Ozone, Hydrocarbons, Sulfur Compounds, PM and Met throughout a year
24 FlightsCatalina Island ozone Catalina Island ozone transport assessmentEvaluated portable monitoring platform on light unmodified aircraft light, unmodified aircraft (relatively low cost)