VISITORS: Effective 21 July 2014, Visitor Center Security will no longer accept IDs from some US states for site access. Please see security procedures for details.


Biofuel Crops and their VOC Emissions

Speaker: Martin Graus, NOAA ESRL CSD & CU CIRES

When: Wednesday, November 7, 2012, 3:30 p.m. Mountain Time
Location: Room 2A305, DSRC (NOAA Building), 325 Broadway, Boulder
Directions: Refer to More Information under our Seminar Schedule

Remote Access: Webinar Registration and view system requirements. Space is limited. Confirmation of registration includes information about joining the GoToMeeting®.
ALL Seminar attendees agree not to cite, quote, copy, or distribute material presented without the explicit written consent of the seminar presenter. Any opinions expressed in this seminar are those of the speaker alone and do not necessarily reflect the opinions of NOAA or ESRL CSD.


Over the last two decades, various legislations in the United States have targeted a reduction of the emissions of air pollutants to improve the air quality in cities, and a reduction of the country’s dependence on (imported) petroleum. As one result the U.S. has become the world's largest producer of fuel ethanol. In the U.S. fuel ethanol is largely produced from corn grain in conventional starch-based fermentation. In 2010 more than 50 billion liters of fuel ethanol were produced (EIA, 2011) consuming about 40% of the total annual corn harvest, which was grown on 357,000 square km of agricultural land (NASS, 2011). The Renewable Fuel Mandate caps the starch based fuel ethanol production (corn based) and incentivizes the fuel ethanol production from cellulosic feedstock such as wood chips but also grassy plants like switchgrass or miscanthus. Plants produce numerous organic compounds in their metabolism, some of which are volatile and can escape into the atmosphere. Volatile organic compounds (VOCs) in the atmosphere are photo-oxidized and have the potential to enhance ozone production in polluted air and contribute to the organic aerosol fraction. In order to assess the atmospheric impact of the cultivation of fuel ethanol crops, emission data from the various plant species are needed to drive the emission models. In this seminar data from several lab studies and field experiments on the VOC exchange between biofuel crops and the atmosphere will be presented and the results will be discussed.