2003 Progress Report: Guiding Future Air Quality Management in California: Sensitivity to Changing ClimateEPA Grant Number: R830964
Title: Guiding Future Air Quality Management in California: Sensitivity to Changing Climate
Investigators: Harley, Robert A. , Cohen, Ronald , Goldstein, Allen H.
Current Investigators: Harley, Robert A. , Cohen, Ronald , Goldstein, Allen H. , Steiner, Allison L , Tonse, Shaheen
Institution: University of California - Berkeley
EPA Project Officer: Chung, Serena
Project Period: March 22, 2003 through March 23, 2006 (Extended to March 22, 2009)
Project Period Covered by this Report: March 22, 2003 through March 23, 2004
Project Amount: $900,000
RFA: Assessing the Consequences of Global Change for Air Quality: Sensitivity of U.S. Air Quality to Climate Change and Future Global Impacts (2002) RFA Text | Recipients Lists
Research Category: Global Climate Change , Air Quality and Air Toxics , Climate Change , Air
The objective of this research project is to assess the impact of changes in regional and global climates on air quality in California. We will use a combination of model and observation-based analyses to determine the effects on air quality resulting from changes in temperature, moisture, and atmospheric mixing.
We have used the U.S. Environmental Protection Agency's Community Multi-scale Air Quality model to predict air quality in a region of California that encompasses the San Francisco Bay Area, Sacramento, and the San Joaquin Valley for conditions observed during part of the summer of 2000. We have developed the necessary data and modeling tools to estimate natural emissions of volatile organic compounds from vegetation. We have used measurements made in California and elsewhere to study the effects of temperature on some specific aspects of the atmospheric chemistry of nitrogen oxides that are relevant to tropospheric ozone formation.
We will work on the issue of emissions and chemistry sensitivity to climate variables such as temperature and moisture. We will extend our emissions estimates and air quality modeling to a longer time period that encompasses more variability in meteorological conditions. We will study the effects on air quality resulting from changes in biogenic and anthropogenic emissions, atmospheric chemistry, and meteorology. We also will study the diurnal patterns of vehicle emissions for coastal and inland locations in California, looking specifically at the influence of temperature and moisture differences on those emissions.