Isoprene emissions and climate

F. Pacifico*, S. P. Harrison, C. D. Jones, S. Sitch

*Corresponding author for this work

Research output: Contribution to journalReview article

108 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)6121-6135
Number of pages15
JournalAtmospheric Environment
Volume43
Issue number39
DOIs
Publication statusPublished - 2009

Keywords

  • Atmospheric chemistry
  • Biosphere emission modelling
  • Biosphere feedback
  • Biospheric flux measurements
  • Climate change
  • Earth system modelling
  • Isoprene

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