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This report was prepared as a result of work sponsored by the California Energy Commission (Commission). It does not necessarily represent the views of the Commission, its employees, or the State of California. The Commission, the State of California, its employees, contractors, and subcontractors make no warranty, express or implied, and assume no legal(More)
(a) phone (805) 644-0125, fax (805) 644-0142, of the California Air Resources Board and Eric Grosjean of DGA for technical input. Luis Woodhouse carried out the calculations of PAN thermal decomposition, Michael W. Poore provided long-term data for ambient carbonyls including acetaldehyde, Bob Effa and Rich Bradley provided long-term data for ambient oxides(More)
Over the last few years, California has passed some of the strongest climate policies in the USA. These new policies have been motivated in part by increasing concerns over the risk of climate-related impacts and facilitated by the state's existing framework of energy and air quality policies. This paper presents an overview of the evolution of this(More)
This paper analyzes day-of-week variations in concentrations of particulate matter (PM) in California. Because volatile organic compounds (VOCs) and oxides of nitrogen (NOx) are not only precursors of ozone (O3) but also of secondary PM, it is useful to know whether the variations by day of week in these precursors are also evident in PM data.(More)
Control strategies for urban ozone traditionally have been based on mass reductions in volatile organic compounds (VOCs). Studies show, however, that some organic gas species (such as alkanes and alcohols) form an order of magnitude less ozone than equal mass emissions of others (such as alkenes and aldehydes). Chemically detailed photochemical models are(More)
In 1999, the California Air Resources Board (CARB) formed the Weekend Effect Working Group to coordinate research activities with local, state, and federal agencies, academia, industry groups, and the public to investigate the possible causes of the weekend ozone effect in California. This article presents CARB's findings. G round-level ozone (O 3) is(More)
Disclaimer The statements and conclusions in this Report are those of the contractor and not necessarily those of the California Air Resources Board. The mention of commercial products, their source, or their use in connection with material reported herein is not to be construed as actual or implied endorsement of such products. (where he directed the(More)
In response to an Executive Order by California Governor Schwarzenegger, an evaluation of the implications to California of possible climate changes was undertaken using a scenario-based approach. The " Scenarios Project " investigated projected impacts of climate change on six sectors in the California region. The investigation considered the early, middle(More)