U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Climate-Relevant Isoprene Chemical Pathways Uncovered
Published: April 06, 2009
Posted: April 17, 2009

In spite of their many positive attributes, including removing carbon from the atmosphere, some trees also contribute to the challenges of climate change. Many deciduous trees emit isoprene (2-methyl-1,3-butadiene, C5H8) during daylight hours, a major organic carbon compoundĀ  accounting for up to 2% of the carbon fixed by those plants and about one third of total volatile organic compounds (VOC) emissions. DOE research has previously demonstrated that isoprene oxidation may contribute significantly to the global aerosol burden with impacts on climate forcing and ozone production. A recent study by this same group described isoprene photooxidation and developed a detailed mechanism, including branching ratios and yields, for the compounds identified. The authors summarize the most important features of this mechanism in a scheme appropriate for use in global chemical transport models. The impact of this chemistry is important in the light of the potential for significant changes in isoprene emissions caused by climate changeĀ  and changes in land use.

Reference: F. Paulot, J. D. Crounse, H. G. Kjaergaard, J. H. Kroll, J. H. Seinfeld, and P. O. Wennberg (2009), Isoprene photooxidation: new insights into the production of acids and organic nitrates, Atmos. Chem. Phys., 9, 1479-1501.

Contact: Ashley Williamson, SC-23.1, (301) 903-3120
Topic Areas:

  • Research Area: Earth and Environmental Systems Modeling
  • Research Area: Atmospheric System Research
  • Research Area: Terrestrial Ecosystem Science

Division: SC-23.1 Climate and Environmental Sciences Division, BER

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

May 10, 2019
Quantifying Decision Uncertainty in Water Management via a Coupled Agent-Based Model
Considering risk perception can improve the representation of human decision-making processes in age [more...]

May 09, 2019
Projecting Global Urban Area Growth Through 2100 Based on Historical Time Series Data and Future Scenarios
Study provides country-specific urban area growth models and the first dataset on country-level urba [more...]

May 05, 2019
Calibrating Building Energy Demand Models to Refine Long-Term Energy Planning
A new, flexible calibration approach improved model accuracy in capturing year-to-year changes in bu [more...]

May 03, 2019
Calibration and Uncertainty Analysis of Demeter for Better Downscaling of Global Land Use and Land Cover Projections
Researchers improved the Demeter model’s performance by calibrating key parameters and establi [more...]

Apr 22, 2019
Representation of U.S. Warm Temperature Extremes in Global Climate Model Ensembles
Representation of warm temperature events varies considerably among global climate models, which has [more...]

List all highlights (possible long download time)