How my work benefits society
My research has been instrumental in understanding changes in Los Angeles air quality since the 1960s. My analysis synthesizes 50 years of measurements of air pollutants and their precursors (nitrogen oxides and volatile organic compounds) from research aircraft, roadside monitors, and surface networks. Long-term trends in these species showed that large reductions in VOCs, which are mainly emitted from motor vehicles in L.A., were the key to successfully reducing pollutants like ozone and peroxyacetyl nitrate (PAN) in this region. Ozone and PAN are major components of smog and are well-known respiratory and eye irritants for humans. My work showed that policymaker’s decisions in the 1960’s to reduce VOC emissions from motor vehicles were successful for decreasing pollutant concentrations in L.A., and that further reductions in local air pollutants in the future will require reductions in emissions of nitrogen oxides.
My publication about LA air quality doi:10.1002/Jgrd.50472 generated a buzz in the media: CIRES press release, NOAA press release, LiveScience article, AGU Newsroom article, The Renewables” 5-part talking points memo.