Record Display for the EPA National Library Catalog

RECORD NUMBER: 26 OF 136

OLS Field Name OLS Field Data
Main Title Climate Change and Global Isoprene Emissions.
Author Turner, D. P. ; Wones, A. G. ; Pross, D. ; Phillips, D. L. ;
CORP Author Corvallis Environmental Research Lab., OR. ;ManTech Environmental Technology, Inc., Corvallis, OR. ;Oregon State Univ., Corvallis.
Publisher 1991
Year Published 1991
Report Number EPA/600/D-91/180;
Stock Number PB91-226480
Additional Subjects Climatic changes ; Natural emissions ; Air pollution ; Emission factors ; Isoprene ; Atmospheric chemistry ; Vegetation ; Ozone ; Global aspects ; Mathematical models ; Carbon dioxide ; Global warming ; Troposphere ; Non-methane hydrocarbons ; Volatile organic compounds ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB91-226480 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/26/1991
Collation 19p
Abstract
Emission of isoprene from vegetation affects tropospheric chemistry at the regional and global scales. Projected global climate change will potentially alter emission rates, with corresponding influences on concentrations of ozone and other radiatively important trace gases. Progress has been made in surveying plant species for their baseline emission rates and in understanding the physiology of the response of emission to environmental factors such as temperature, light and atmospheric CO2 concentration. However, few tree species of tropical environments have been studied nor have the details of isoprene biosynthesis or its functional significance been elucidated. Relatively simple emission models at regional to global scales have been developed using geographic databases for temperature and vegetation characteristics. Isoprene emissions are expected to rise in response to projected global climate change because of increases in temperature and an increased areal extent of high isoprene emitting forest types. There remains great uncertainty about such projections however, considering the uncertainties in the emissions modeling (about a factor of 3), uncertainties in the climate modeling, the future influence of anthropogenic factors on vegetation change, and the unmodeled influence of high CO2 on isoprene biosynthesis. There is a need to improve the modeling of emissions as inputs to global atmospheric chemistry models which in turn can be used to evaluate the effects of changing emissions on concentrations of tropospheric ozone and other radiatively important gases.