Determining the background or 'natural' emission of pollutants is important for air pollution studies that attempt to quantify the impact of human activities on pollutant levels. In the case of ozone, its atmospheric concentrations are impacted partially by the emissions of ozone precursor chemicals (i.e. volatile organic compounds) from biogenic sources. This study describes the development of a summertime biogenic emissions inventory for the Tucson region. Relatively accurate non-methane hydrocarbon emission rates are available for many trees and shrubs of the eastern United States; however, rough and/or no emissions estimates are available for southwestern vegetation. In this study we have developed a biogenic emissions inventory using land cover information derived from a satellite image. Preliminary results reveal the overwhelming importance of total leaf biomass with respect to the spatial variation in VOC emissions. Overall, satellite imagery has proven to be a useful tool for developing a biogenic emissions inventory. The image's relatively fine spatial resolution (28.5 meters) allows for detailed investigations of specific VOC source areas as well as the influence of these emissions on eventual ozone concentrations.

Original languageEnglish (US)
Number of pages6
StatePublished - 1998
EventProceedings of the 1998 91st Annual Meeting & Exposition of the Air & Waste Management Association - San Diego, CA, USA
Duration: Jun 14 1998Jun 18 1998


OtherProceedings of the 1998 91st Annual Meeting & Exposition of the Air & Waste Management Association
CitySan Diego, CA, USA

ASJC Scopus subject areas

  • General Engineering


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