1. General Model Information
Name: Osnabrueck Biosphere Model
Main medium: air+terrestrial
Main subject: biogeochemistry
Organization level: biome
Type of model: compartment model
Keywords: global change, rising CO2 level, soil organic matter, carbon, atmosphere, temperature, process-based
Prof. Dr. Gerd Esser
Inst. f. Pflanzenökologie
Heinrich-Buff-Ring 38 (MZVG)
Email: G. Esser
Prof. Dr. Gerd Esser
Esser (1990) developed the Osnabruck Biosphere Model (OBM) to simulate
global terrestrial sources and sinks of CO2 with special reference to soil
organic matter. The model is grid-based and estimates the influences of
(a) the rising atmospheric CO2 level, (b) the temperature change due to
greenhouse effect, and (c) the clearing of forests and other natural vegetation,
on the development of the biospheric pools, the soil organic carbon and
the atmospheric CO2.
(from: Donigan, A.S.; et al.: 1994 : Assessment of Alternative Management
Practices and Policies Affecting Soil Carbon in Agroecosystems of the Central
United States. P.33.)
The model was renamed to HRBM (High Resolution
II. Technical Information
The model results have not been validated with independent data.
III. Mathematical Information
Esser, G., 1991
Osnabruck Biosphere Model: structure, construction, results. In: ModernEcology: basic and applied aspects (G. Esser and D. Overdieck, eds.). Elsevier,Amsterdam and London. pp. 679-709.
Esser, G., 1984
The significance of biospheric carbon pools and fluxes for atmosphericCO2: A proposed model structure. Progress in Biometeorology 3, 253-294.
Esser, G., 1986
The carbon budget of the biosphere - structure and preliminary resultsof the Osnabruck Biosphere Model. Veroff. Naturf. Ges. zu Emden von 18147:1-160.
Esser, G. & M. Lautenschlager, 1994
Estimating the Change Of Carbon in the Terrestrial Biosphere from 18000-BPto Present Using a Carbon-Cycle Model. Environmental Pollution Vol. 83,No. 1-2, pp. 45-53.
V. Further information in the World-Wide-Web
Report of the POTSDAM'95 IGBP NPP Model Intercomparison Workshop
VI. Additional remarks
Model simulations for the period of 1860-1980 and for 1980 only were performed. Five conclusions were drawn from the study :
- (1) The effect of CO2 fertilization is very important.
- (2) The landuse database should be improved to reflect changing landuse practices.
- (3) Soil organic carbon pool can be predicted using the simple assumption that the lignin fraction of litter contributes to soil organic carbon.
- (4) Soil organic carbon losses after clearing are sufficiently predictable considering the reduced net primary productivity of field crops.
- (5) The effects of landuse changes and clearings on soil organic carbon and litter are, on a global scale, compensated by the CO2 fertilization effect.
Last review of this document by: January 22, 1997 M.Sonntag: email@example.com
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:46 CEST 2002