Clean Air in 2050: Portable Emissions Measurement Systems (PEMS)
California's vision for clean air and the transportation sector, measurement needs for the road to 2050, role of PEMS in supporting the 2050 vision, air quality, and climate planning, goals, emission scenarios, NOx trends, vehicle emissions measurements, and strategies for reducing emissions to support the 2050 vision.
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Toward Clean Air in 2050: Perspectives on Portable Emissions Measurement Systems (PEMS) Dr. Michael Benjamin, Chief Monitoring and Laboratory Division California Air Resources Board 2013 PEMS Conference & Workshop University of California, Riverside April 11, 2013 1
Outline California s Vision for Clean Air and the Transportation Sector Measurement Needs for Road to 2050 Role of PEMS in Supporting 2050 Vision Conclusion 2
Vision for Clean Air: Framework for Air Quality and Climate Planning 3
Californias Air Quality and Climate Goals Climate Change Goal Federal Ozone Standards 4
California Light-Duty Sector, 2010-2050 Auto Sales Scenario Zero emission by 2040 5
California Heavy-Duty Sector, 2010-2050 Heavy Duty Trucks Sales Scenario Conventional Zero Emission Near Zero Emission 6
Mobile Source NOx Trend, 2010-2050 South Coast 2050* 2010 * 2050: total baseline emissions is expected to drop about 50% from 2010 levels. 7
Vehicle Emissions Measurements Dynamometer ARB ARB UCR Mobile Emissions Laboratory PEMS UCR UCR/ARB Remote Sensing Device Near Road Tunnel University of Denver UCB UCLA/USC 8
Emissions Measurement Road Map ARB s Current Capabilities 2050 ? 9
Measurements to Support 2050 Vision Applications o Regulatory o Implementation o Research Characteristics o Lower detection limits o Wide dynamic range o Reduced size, weight, and cost o Correlation to laboratory testing 10
PEMS as a Tool on the Road to 2050 Proper characterization of real-world emissions Evaluation of bridging technologies Ensure low emissions remain for full useful life Wide dynamic ranges, very accurate exhaust flow meters Affordable equipment for ubiquitous use 11
Conclusions California needs a much lower-emission transportation system to attain its air quality and climate goals. ARB s mix of measurement methods will continue to evolve to match changing emissions sources. PEMS may play a supporting role in moving California toward its 2050 goals. 12
