Record Display for the EPA National Library Catalog


Main Title Evaluation of Forest Canopy Models for Estimating Isoprene Emissions.
Author Lamb, B. ; Allwine, E. ; Dilts, S. ; Westberg, H. ; Pierce, T. ;
CORP Author Washington State Univ., Pullman. Dept. of Civil and Environmental Engineering. ;National Oceanic and Atmospheric Administration, Oak Ridge, TN. Atmospheric Turbulence and Diffusion Div. ;National Center for Atmospheric Research, Boulder, CO.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 1996
Year Published 1996
Report Number EPA/600/A-96/105;
Stock Number PB97-123111
Additional Subjects Natural emissions ; Air pollution sources ; Photosynthesis ; Isoprene ; Hydrocarbons ; Biomass ; Canopies(Vegetation) ; Leaves(Botany) ; Deciduous trees ; Solar radiation ; Respiration ; Transpiration ; Monitoring ; Estimating ; Air-biosphere interactions ; Uncertainty ; Mathematical models ; Biogenic emissions
Library Call Number Additional Info Location Last
NTIS  PB97-123111 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
The paper gives results of an evaluation of forest canopy models for estimating isoprene emissions. Three approaches are compared for determining the leaf microclimate as input to biogenic emission inventory systems: (1) no-canopy effects, (2) a simple scaling model based on empirical vertical scaling relationships and a leaf energy balance, and (3) a numerical canopy model that explicitly accounts for leaf-sun geometries, photosynthesis, respiration, and transpiration. Model-to-model comparisons and sensitivity analyses are presented to highlight the uncertainties involved in modeling leaf-level biogenic hydrocarbon emissions. A preliminary evaluation of these models is also presented based on measured isoprene fluxes from a southeastern deciduous forest.