Article (Scientific journals)
Seasonal and interannual influences of the terrestrial ecosystems on atmospheric CO2: a model study
François, Louis; Nemry, Bernard; Warnant, Pierre et al.
1996In Physics and Chemistry of the Earth, 21, p. 537-544
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Abstract :
[en] The prognostic CARAIB (Carbon Assimilation In the Biosphere) model has been used in conjunction with the Max-Planck Institut TM2 atmospheric transport model to calculate the atmospheric CO2 fluctuations at the global scale. Two applications are briefly described. In the first one, the seasonal CO2 variation is calculated and a Fourier analysis is performed to determine the relative contributions of the various vegetation types. It is found that the seasonal signal is dominated by the grasslands and needle leaf forests in the northern boreal and temperate zones. In the southern hemisphere, tropical deciduous forests and grasslands make the primary contribution. In the second application, the net primary productivity (NPP), soil heterotrophic respiration (SHR) and net ecosystem productivity (NEP) are calculated for years 1987 and 1988 with the model driven by observed climatic variables. Preliminary results indicate that the NEP variations between these two years are strongly dominated by tropical ecosystems. However, it is shown that the results are strongly dependent on the dataset used for the 1987-88 temperature record, raising the question of reliability of sudl modelling studies of the interannual variability of the biosphere. 01997 Elsevier Science Ltd
Disciplines :
Earth sciences & physical geography
Author, co-author :
François, Louis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Nemry, Bernard;  Université de Liège - ULiège
Warnant, Pierre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
Seasonal and interannual influences of the terrestrial ecosystems on atmospheric CO2: a model study
Publication date :
1996
Journal title :
Physics and Chemistry of the Earth
ISSN :
0079-1946
eISSN :
1879-3568
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
21
Pages :
537-544
Peer reviewed :
Peer reviewed
Available on ORBi :
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