Turbulent transport and reactions of plant-emitted hydrocarbons in an Amazonian rain forest

The processes governing the temporal and spatial patterns of isoprene monoterpenes emitted by a rainforest in central Amazon region Brazil is investigated using combination field experiments numerical simulations. Specifically, Large Eddy Simulations (LES) were used to resolve emissions monoterpenes, turbulent transport, air chemistry. coupled chemistry-transport LES included effects reactivity due reactions with hydroxyl radical ozone. results are compute vertically resolved budgets canopy response emissions, surface deposition, Results indicated that emission dispersion dominated budget as gases transported out space. In limited nitrogen oxides (with prevailing nitric oxide levels < 0.5 parts per billion), in-canopy chemical destruction removed approximately 10% locally monoterpenes. Hydroxyl production rates from ozonolysis amounted ≈2×106radicalscm−3s−1 had similar magnitude light-dependent formation. One key conclusion was Amazonia abundantly whose yielded radicals amounts Reactions ozone necessary for maintenance photochemically active environment suitable generate oxidants secondary organic aerosols.