Reference : Photosynthesis-dependent isoprene emission from leaf to planet in a global carbon-che...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/157749
Photosynthesis-dependent isoprene emission from leaf to planet in a global carbon-chemistry-climate model
English
Unger, N. [Yale University, New Haven, USA > School of Forestry and Environmental Studies > > >]
Harper, K. [Yale University, New Haven, USA > School of Forestry and Environmental Studies, > > >]
Zheng, Y. [Yale University, New Haven, USA > Geology and Geophysics > > >]
Kiang, N.Y. [NASA Goddard Institute for Space Studies, New York, USA > > > >]
Aleinov, I. [NASA Goddard Institute for Space Studies, New York, USA > > > >]
Arneth, A. [Karlsruhe Institute for Technology, Institute of Meteorology and Climate Research, Germany > > > >]
Schurgers, G. [University of Lund, Sweden > Department of Earth and Ecosystem Sciences > > >]
Amelynck, C. [Belgian Institute for Space Aeronomy, Brussels, Belgium > > > >]
Goldstein, A. [University of California at Berkeley, USA > Department of Environmental Science, Policy, and Management > > >]
Guenther, A. [National Center for Atmospheric Research, Boulder, USA > > > >]
Heinesch, Bernard mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Physique des bio-systèmes >]
Hewitt, C.N. [Lancaster University, Bailrigg, UK > > > >]
Karl, T. [University of Innsbruck, Institute of Meteorology and Geophysics > > > >]
Laffineur, Quentin mailto [Université de Liège - ULiège and Royal Meteorological Institute of Belgium > > > >]
Langford, B. [Centre for Ecology and Hydrology, Midlothian, UK > > > >]
McKinney, K.A. [Amherst College, Massachusetts, USA > Department of Chemistry > > >]
Misztal, P. [University of California at Berkeley, USA > Department of Environmental Science, Policy, and Management > > >]
Potosnak, M. [DePaul University, Chicago, IL, USA > > > >]
Rinne, J. [University of Helsinki, Finland > > > >]
Pressley, S. [Washington State University, Pullman, WA, USA > > > >]
Schoon, N. [Belgian Institute for Space Aeronomy, Brussels, Belgium > > > >]
Serça, D. [Université Toulouse, France > > > >]
22-Oct-2013
Atmospheric Chemistry and Physics
Copernicus Publications
13
10243-10269
Yes (verified by ORBi)
International
1680-7316
1680-7324
Katlenburg-Lindau
Germany
[en] Isoprene emission ; Photosynthesis
[en] We describe the implementation of a biochemical model of isoprene emission that depends on the electron requirement for isoprene synthesis into the Farquhar–Ball–Berry leaf model of photosynthesis and stomatal conductance that is embedded within a global chemistry-climate
simulation framework. The isoprene production is calculated as a function of electron transport-limited photosynthesis, intercellular and atmospheric carbon dioxide concentration, and canopy temperature. The vegetation biophysics module computes the photosynthetic uptake of carbon dioxide coupled with the transpiration of water vapor and the isoprene emission rate at the 30 min physical integration time step of the global chemistry-climate model. In the model, the rate of carbon assimilation provides the dominant control on isoprene emission variability over canopy temperature.
A control simulation representative of the present-day climatic state that uses 8 plant functional types (PFTs), prescribed phenology and generic PFT-specific isoprene emission potentials (fraction of electrons available for isoprene synthesis) reproduces 50% of the variability across different ecosystems and seasons in a global database of 28 measured campaign-average fluxes. Compared to time-varying isoprene flux measurements at 9 select sites, the model authentically captures the observed variability in the 30 min average diurnal cycle (R2 = 64–96 %) and simulates the flux magnitude to within a factor of 2. The control run yields a global isoprene source strength of 451 TgC yr−1 that increases by 30% in the artificial absence of plant water stress and by 55% for potential natural vegetation.
Researchers ; Professionals
http://hdl.handle.net/2268/157749
10.5194/acp-13-10243-2013
http://reflexions.ulg.ac.be/en/VOCisoprene

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
acp-13-10243-2013.pdfPublisher postprint5.96 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.