Isoprene emissions and climate |
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| Authors: | F Pacifico SP Harrison CD Jones S Sitch |
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| Institution: | 1. Met Office Hadley Centre, FitzRoy Road, Exeter EX1 3PB, UK;2. School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK;3. School of Geography, University of Leeds, Leeds LS2 9JT, UK;1. Atmospheric Chemistry Services, Okehampton, Devon, EX20 4QB, UK;2. School of Chemistry, University of Bristol, Cantock''s Close, Bristol, BS8 1TS, UK;3. Department of Space, Earth and Environment, Chalmers University of Technology, 41296, Gothenburg, Sweden;4. Swedish Meteorological and Hydrological Institute, 601 76, Norrköping, Sweden;5. EMEP MSC-W, Norwegian Meteorological Institute, Oslo, 0313, Oslo 3, Norway;6. Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York, YO10 5DD, UK;7. National Centre for Atmospheric Science, University of York, York, YO10 5DD, UK;1. Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia;2. Department of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia;3. Grantham Institute for Climate Change, and Division of Biology, Imperial College London, Silwood Park, Ascot SL5 7PY, UK;1. Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, MD 20742, USA;2. Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD 21250, USA;3. Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;4. Department of Atmospheric and Oceanic Science, University of Maryland College Park, College Park, MD 20742, USA;5. Earth System Science Interdisciplinary Center, University of Maryland College Park, College Park, MD 20742, USA;6. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;7. Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA;8. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309, USA;9. Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO 80305, USA;10. Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA;11. Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA;1. LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP, CAS), Beijing 100029, China;2. Department of Earth System Science, University of California, Irvine, CA 92697, USA;3. 2B Technologies, Inc., Boulder, CO 80301, USA;4. National Center for Atmospheric Research, Boulder, CO 80307, USA |
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| Abstract: | Biogenic volatile organic compounds (BVOCs) play an important role in atmospheric chemistry and the carbon cycle. Isoprene is quantitatively the most important of the non-methane BVOCs (NMBVOCs), with an annual emission of about 400–600 TgC; about 90% of this is emitted by terrestrial plants. Incorporating a mechanistic treatment of isoprene emissions within land-surface schemes has recently become a focus for the modelling community, the aim being to quantify the potential magnitude of associated climate feedbacks. However, these efforts are hampered by major uncertainties about why plants emit isoprene and the relative importance of different environmental controls on isoprene emission. The availability and reliability of observations of isoprene fluxes from different types of vegetation is limited, and this also imposes constraints on model development. Nevertheless, progress is being made towards the development of mechanistic models of isoprene emission which, in conjunction with atmospheric chemistry models, will ultimately allow improved quantification of the feedbacks between the terrestrial biosphere and climate under past and future climate states. |
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