HR: 0800h
AN: SF31A-0711    [Abstracts]
TI: Emissions From the Terrestrial Biosphere
AU: * Wiedinmyer, C
EM: christin@ucar.edu
AF: Atmospheric Chemistry Division National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305 United States
AU: Guenther, A
EM: guenther@ucar.edu
AF: Atmospheric Chemistry Division National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305 United States
AU: Belote, A
EM: angieb@ucar.edu
AF: Atmospheric Chemistry Division National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305 United States
AU: Klos, K
EM: kkristi@ucar.edu
AF: Atmospheric Chemistry Division National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305 United States
AB: The terrestrial biosphere plays a critical role in the functioning of the earth system. Vegetation emits significant amounts of volatile organic compounds (VOC) and aerosols to the atmosphere through several pathways that include physiological and biochemical processes and disturbances such as wildfire and herbivory. Biogenic VOC emissions can affect chemical processes that determine air quality and control the lifetimes of longer lived chemical species. Direct aerosol emissions from vegetation and wildfires and secondary aerosols formed by biogenic VOC can impact public health, change cloud properties, and control climate processes. Biogenic emissions play a critical role in many atmospheric and biogeochemical processes. Therefore, to realistically simulate the earth system, including air quality and climate, reasonable estimates of biogenic emissions must be included in those simulations. This paper presents an overview of biogenic emissions from undisturbed vegetation and from wildfire. Models that simulate these emissions have been developed to create inputs for regional and global chemical transport models and for climate models. Despite the success in biogenic emission model development, technical challenges for such modeling still exist. Biogenic emission models use a variety of input information, including satellite data, field observations, and output from other models (e.g. NCEP, MM5, WRF). These inputs have a variety of spatial and temporal resolutions and are available in many different formats. Several of the challenges encountered when modeling biogenic emissions will be addressed, including difficulties in applying different input datasets due to format, size, and spatial resolution and limitations in software that hinder the processing of emission estimates.
DE: 1610 Atmosphere (0315, 0325)
DE: 1615 Biogeochemical processes (4805)
DE: 0315 Biosphere/atmosphere interactions
DE: 0400 Biogeosciences
SC: Special Focus: Advances in Data Acquisition, Management, Analysis and Display [SF]
MN: 2004 AGU Fall Meeting