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CO2 inhibition of terrestrial isoprene production stabilises tropospheric oxidation capacity

Arneth, Almut LU ; Miller, Paul LU ; Scholze, Marko LU ; Hickler, Thomas LU ; Schurgers, Guy LU ; Smith, Benjamin LU and Prentice, IC (2007) In Geophysical Research Letters 34, L18813(18).
Abstract
[1] Isoprene is the dominant volatile organic compound produced by the terrestrial biosphere and fundamental for atmospheric composition and climate. It constrains the concentration of tropospheric oxidants, affecting the lifetime of other reduced species such as methane and contributing to ozone production. Oxidation products of isoprene contribute to aerosol growth. Recent consensus holds that emissions were low during glacial periods ( helping to explain low methane concentrations), while high emissions ( contributing to high ozone concentrations) can be expected in a greenhouse world, due to positive relationships with temperature and terrestrial productivity. However, this response is offset when the recently demonstrated inhibition... (More)
[1] Isoprene is the dominant volatile organic compound produced by the terrestrial biosphere and fundamental for atmospheric composition and climate. It constrains the concentration of tropospheric oxidants, affecting the lifetime of other reduced species such as methane and contributing to ozone production. Oxidation products of isoprene contribute to aerosol growth. Recent consensus holds that emissions were low during glacial periods ( helping to explain low methane concentrations), while high emissions ( contributing to high ozone concentrations) can be expected in a greenhouse world, due to positive relationships with temperature and terrestrial productivity. However, this response is offset when the recently demonstrated inhibition of leaf isoprene emissions by increasing atmospheric CO2 concentration is accounted for in a process-based model. Thus, isoprene may play a small role in determining pre-industrial tropospheric OH concentration and glacial-interglacial methane trends, while predictions of high future tropospheric O-3 concentrations partly driven by isoprene emissions may need to be revised. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Geophysical Research Letters
volume
34, L18813
issue
18
publisher
American Geophysical Union
external identifiers
  • wos:000249850900002
  • scopus:36549073707
ISSN
1944-8007
DOI
10.1029/2007GL030615
language
English
LU publication?
yes
id
f094c712-af9b-4cca-bbd8-2218e2bccab1 (old id 590380)
date added to LUP
2007-12-14 10:16:59
date last changed
2017-08-27 05:36:10
@article{f094c712-af9b-4cca-bbd8-2218e2bccab1,
  abstract     = {[1] Isoprene is the dominant volatile organic compound produced by the terrestrial biosphere and fundamental for atmospheric composition and climate. It constrains the concentration of tropospheric oxidants, affecting the lifetime of other reduced species such as methane and contributing to ozone production. Oxidation products of isoprene contribute to aerosol growth. Recent consensus holds that emissions were low during glacial periods ( helping to explain low methane concentrations), while high emissions ( contributing to high ozone concentrations) can be expected in a greenhouse world, due to positive relationships with temperature and terrestrial productivity. However, this response is offset when the recently demonstrated inhibition of leaf isoprene emissions by increasing atmospheric CO2 concentration is accounted for in a process-based model. Thus, isoprene may play a small role in determining pre-industrial tropospheric OH concentration and glacial-interglacial methane trends, while predictions of high future tropospheric O-3 concentrations partly driven by isoprene emissions may need to be revised.},
  author       = {Arneth, Almut and Miller, Paul and Scholze, Marko and Hickler, Thomas and Schurgers, Guy and Smith, Benjamin and Prentice, IC},
  issn         = {1944-8007},
  language     = {eng},
  number       = {18},
  publisher    = {American Geophysical Union},
  series       = {Geophysical Research Letters},
  title        = {CO2 inhibition of terrestrial isoprene production stabilises tropospheric oxidation capacity},
  url          = {http://dx.doi.org/10.1029/2007GL030615},
  volume       = {34, L18813},
  year         = {2007},
}