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The carbon cycle in a land surface model: modelling, validation and implementation at a global scale; Cycle du carbone dans un modele de surface continentale: modelisation, validation et mise en oeuvre a l'echelle globale

Abstract

ISBA-A-gs is an option of the CNRM land surface model ISBA which allows for the simulation of carbon exchanges between the terrestrial biosphere and the atmosphere. The model was implemented for the first time at the global scale as a stand-alone model. Several global simulations were performed to assess the sensitivity of the turbulent fluxes and Leaf Area Index to a doubling of the CO{sub 2} atmospheric concentration, and to the climate change simulated by the end of the 21. century. In addition, a new option of ISBA, referred to as ISBA-CC, was developed in order to simulate a more detailed ecosystem respiration by separating the autotrophic respiration and the heterotrophic respiration. The vegetation dynamics and the carbon fluxes were validated at a global scale using satellite datasets, and at a local scale using data from 26 sites of the FLUXNET network. All these results show that the model is sufficiently realistic to be coupled with a general circulation model, in order to account for interactions between the terrestrial biosphere, the atmosphere and the carbon cycle. (author)
Authors:
Publication Date:
May 15, 2007
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-7206
Resource Relation:
Other Information: TH: These modelisation de la biosphere terrestre; [95 refs.]; Also available from SCD Toulouse 3 - BU de Sciences, 118, route de Narbonne, 31062 - Toulouse Cedex 4 (France)
Subject:
54 ENVIRONMENTAL SCIENCES; ANNUAL VARIATIONS; BIOLOGICAL STRESS; BOX MODELS; CARBON CYCLE; CARBON DIOXIDE; CLIMATIC CHANGE; COMPUTERIZED SIMULATION; ENVIRONMENTAL IMPACTS; FOREST LITTER; LEAVES; PHOTOSYNTHESIS; PLANTS; RESPIRATION; TERRESTRIAL ECOSYSTEMS
OSTI ID:
20992639
Research Organizations:
Toulouse-3 Univ. Paul Sabatier, 31 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0704431016569
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
212 pages
Announcement Date:
Mar 27, 2008

Citation Formats

Gibelin, A L. The carbon cycle in a land surface model: modelling, validation and implementation at a global scale; Cycle du carbone dans un modele de surface continentale: modelisation, validation et mise en oeuvre a l'echelle globale. France: N. p., 2007. Web.
Gibelin, A L. The carbon cycle in a land surface model: modelling, validation and implementation at a global scale; Cycle du carbone dans un modele de surface continentale: modelisation, validation et mise en oeuvre a l'echelle globale. France.
Gibelin, A L. 2007. "The carbon cycle in a land surface model: modelling, validation and implementation at a global scale; Cycle du carbone dans un modele de surface continentale: modelisation, validation et mise en oeuvre a l'echelle globale." France.
@misc{etde_20992639,
title = {The carbon cycle in a land surface model: modelling, validation and implementation at a global scale; Cycle du carbone dans un modele de surface continentale: modelisation, validation et mise en oeuvre a l'echelle globale}
author = {Gibelin, A L}
abstractNote = {ISBA-A-gs is an option of the CNRM land surface model ISBA which allows for the simulation of carbon exchanges between the terrestrial biosphere and the atmosphere. The model was implemented for the first time at the global scale as a stand-alone model. Several global simulations were performed to assess the sensitivity of the turbulent fluxes and Leaf Area Index to a doubling of the CO{sub 2} atmospheric concentration, and to the climate change simulated by the end of the 21. century. In addition, a new option of ISBA, referred to as ISBA-CC, was developed in order to simulate a more detailed ecosystem respiration by separating the autotrophic respiration and the heterotrophic respiration. The vegetation dynamics and the carbon fluxes were validated at a global scale using satellite datasets, and at a local scale using data from 26 sites of the FLUXNET network. All these results show that the model is sufficiently realistic to be coupled with a general circulation model, in order to account for interactions between the terrestrial biosphere, the atmosphere and the carbon cycle. (author)}
place = {France}
year = {2007}
month = {May}
}