Atmospheric Composition and Structure: Biosphere/atmosphere interactions; Information Related to Geologic Time: Cenozoic; Meteorology and Atmospheric Dynamics: Paleoclimatology
Abstract :
[en] A simplified three-dimensional global climate model was used to simulate the surface temperature and precipitation distributions for the Last Glacial Maximum (LGM), 18000 years ago. These fields were applied to a bioclimatic scheme which parameterizes the distribution of eight vegetation types as a function of biotemperature and annual precipitation. The model predicts a decrease, for LGM compared to present, in forested area balanced by an increase in desert and tundra extent, in agreement with a reconstruction of the distribution of vegetation based on paleodata. However, the estimated biospheric carbon content (phytomass and soil carbon) at LGM is less reduced than in the reconstructed one. Possible reasons for this discrepancy are discussed.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Friedlingstein, P.
Delire, C.
Müler, J. F.
Gérard, Jean-Claude ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
The climate induced variation of the continental biosphere: A model simulation of the last glacial maximum
Publication date :
01 May 1992
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
American Geophysical Union, Washington, United States - District of Columbia
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