World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

The Climate Dependence of the Terrestrial Carbon Cycle, Including Parameter and Structural Uncertainties : Volume 10, Issue 1 (29/01/2013)

By Smith, M. J.

Click here to view

Book Id: WPLBN0004003196
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: The Climate Dependence of the Terrestrial Carbon Cycle, Including Parameter and Structural Uncertainties : Volume 10, Issue 1 (29/01/2013)  
Author: Smith, M. J.
Volume: Vol. 10, Issue 1
Language: English
Subject: Science, Biogeosciences
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Emmott, S., Smith, M. J., Purves, D. W., Lyutsarev, V., & Vanderwel, M. C. (2013). The Climate Dependence of the Terrestrial Carbon Cycle, Including Parameter and Structural Uncertainties : Volume 10, Issue 1 (29/01/2013). Retrieved from

Description: Computational Science Laboratory, Microsoft Research Cambridge, 21 Station Road, Cambridge, CB1 2FB, UK. The feedback between climate and the terrestrial carbon cycle will be a key determinant of the dynamics of the Earth System (the thin layer that contains and supports life) over the coming decades and centuries. However, Earth System Model projections of the terrestrial carbon-balance vary widely over these timescales. This is largely due to differences in their terrestrial carbon cycle models. A major goal in biogeosciences is therefore to improve understanding of the terrestrial carbon cycle to enable better constrained projections. Utilising empirical data to constrain and assess component processes in terrestrial carbon cycle models will be essential to achieving this goal. We used a new model construction method to data-constrain all parameters of all component processes within a global terrestrial carbon model, employing as data constraints a collection of 12 empirical data sets characterising global patterns of carbon stocks and flows. Our goals were to assess the climate dependencies inferred for all component processes, assess whether these were consistent with current knowledge and understanding, assess the importance of different data sets and the model structure for inferring those dependencies, assess the predictive accuracy of the model and ultimately to identify a methodology by which alternative component models could be compared within the same framework in the future. Although formulated as differential equations describing carbon fluxes through plant and soil pools, the model was fitted assuming the carbon pools were in states of dynamic equilibrium (input rates equal output rates). Thus, the parameterised model is of the equilibrium terrestrial carbon cycle. All but 2 of the 12 component processes to the model were inferred to have strong climate dependencies, although it was not possible to data-constrain all parameters, indicating some potentially redundant details. Similar climate dependencies were obtained for most processes, whether inferred individually from their corresponding data sets or using the full terrestrial carbon model and all available data sets, indicating a strong overall consistency in the information provided by different data sets under the assumed model formulation. A notable exception was plant mortality, in which qualitatively different climate dependencies were inferred depending on the model formulation and data sets used, highlighting this component as the major structural uncertainty in the model. All but two component processes predicted empirical data better than a null model in which no climate dependency was assumed. Equilibrium plant carbon was predicted especially well (explaining around 70% of the variation in the withheld evaluation data). We discuss the advantages of our approach in relation to advancing our understanding of the carbon cycle and enabling Earth System Models to make better constrained projections.

The climate dependence of the terrestrial carbon cycle, including parameter and structural uncertainties

Adair, E. C., Parton, W. J., del Grosso, S. J., Silver, W. L., Harmon, M. E., Hall, S. A., Burke, I. C., and Hart, S. C.: Simple three-pool model accurately describes patterns of long term litter decomposition in diverse climates, Global Change Biol., 14, 2636–2660, 2008.; Adams, B., White, A., and Lenton, T. M.: An analysis of some diverse approaches to modelling terrestrial net primary productivity, Ecol. Mod., 177, 351–391, 2004.; Aerts, R.: Climate, leaf litter chemistry and leaf litter decomposition in terrestrial ecosystems: a triangular relationship, Oikos ,79, 439–449, 1997.; Allen R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop evapotranspiration – Guidelines for computing crop water requirements, FAO Irrigation and drainage paper, 56,, 1998.; Allen, C. D., Macalady, A. K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Rigling, A., Breshears, D. D., Hogg, E. H., Gonzalez, P., Fensham, R., Zhang, Z., Castro, J., Demidova, N., Lim, J. H., Allard, G., Running, S. W., Semerci, A., and Cobb N.: A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests, For. Ecol. Manage., 259, 660–684, 2010.; Arneth, A., Mercado, L., Kattge, J., and Booth, B. B. B.: Future challenges of representing land-processes in studies on land-atmosphere interactions, Biogeosciences, 9, 3587–3599, doi:10.5194/bg-9-3587-2012, 2012.; Friedlingstein, P., Dufresne, J.-L., Cox, P. M., and Rayner P.: How positive is the feedback between climate change and the carbon cycle?, Tellus B, 55, 692–700, 2003.; Arora, V. K. and Boer, G. J.: Fire as an interactive component of dynamic vegetation models, J. Geophys. Res., 110, G02008, doi:10.1029/2005JG000042, 2005.; Bartholome, E. M. and Belward, A. S.: ; a new approach to global land cover mapping from Earth Observation Data, Int. J. Remote Sens., 26, GLC2000, doi:10.1080/01431160412331291297, 1959–1977, 2005.; Batjes, N. H.: Global Data Set of Derived Soil Properties, 0.5-Degree Grid (ISRIC-WISE), Data set, from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA, available at:, 2000.; Bolker, B. M., Pacala, S. W., and Parton Jr., W. J.: Linear analysis of soil decomposition: insights from the century model, Ecol. App., 8, 425–439, 1998.; Bonan, G.: Physiological derivation of the observed relationship between net primary productivity and mean annual air temperature, Tellus B, 45, 379–408, doi:10.1034/j.1600-0889.1993.t01-4-00001.x, 1993.; Cox, P. and Stephenson, D.: A changing climate for prediction, Science, 317, 207–208, 2007.; Cramer, W., Kicklighter, D. W., Bondeau, A., Moore III, B., Churkina, G., Nemry, B., Ruimy, A., and Schloss, A. L.: Global responses of terrestrial ecosystem structure and function to CO2 and climate change: results from six dynamic global vegetation models, Global Change Biol., 7, 357–373, 2001.; Dai, A., and Fung, I. Y.: Can climate variability contribute to the missing CO2 sink?, Global Biogeochem. Cy., 7, 599–609, 1993.; Eissenstat, D. M. and Yanai, R. D.: The ecology of root lifespan, Ads. Ecol. Res., 17, 1–60, 1997.; Denman, K. L., Brasseur, G., Chidthaisong, A., Ciais, P., Cox, P. M., Dickinson, R. E., Hauglustaine, D., Heinze, C., Holland, E., Jacob, D., Lohmann, U., Ramachandran, S., da Silva Dias, P. L., Wofsy, S. C., and Zhang, X.: Couplings Between Changes in the Climate System and Biogeochemistry, in: Climate Change 2007: The Physical Science


Click To View

Additional Books

  • Plant Physiological and Environmental Co... (by )
  • Relative Roles of Local Disturbance, Cur... (by )
  • Distinct Patterns in the Diurnal and Sea... (by )
  • Memorias Y Revista De La Sociedad Cientí... Volume: t.12-13 1898-1904 (by )
  • Exceptional Dense Water Formation on the... (by )
  • Multi-isotope Labelling (13C, 18O, 2H) o... (by )
  • Manifestation of Two Meddies in Altimetr... (by )
  • Modelling Seasonal Circulation and Therm... (by )
  • Transactions and Proceedings and Report ... Volume: v.2, 1878-1879 (by )
  • Using a Two-layered Sphere Model to Inve... (by )
  • Historical Records of Eutrophication in ... (by )
  • Observations of Turbulence Beneath Sea I... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.