Now showing items 1-8 of 8

  • Atmospheric carbon dioxide variability in the Community Earth System Model : evaluation and transient dynamics during the twentieth and twenty-first centuries 

    Keppel-Aleks, Gretchen; Randerson, James T.; Lindsay, Keith; Stephens, Britton B.; Moore, J. Keith; Doney, Scott C.; Thornton, Peter E.; Mahowald, Natalie M.; Hoffman, Forrest M.; Sweeney, Colm; Tans, Pieter P.; Wennberg, Paul O.; Wofsy, Steven C. (American Meteorological Society, 2013-07-01)
    Changes in atmospheric CO2 variability during the twenty-first century may provide insight about ecosystem responses to climate change and have implications for the design of carbon monitoring programs. This paper describes ...
  • Carbon-nitrogen interactions regulate climate-carbon cycle feedbacks : results from an atmosphere-ocean general circulation model 

    Thornton, Peter E.; Doney, Scott C.; Lindsay, Keith; Moore, J. Keith; Mahowald, Natalie M.; Randerson, James T.; Fung, Inez Y.; Lamarque, J.-F.; Feddema, J. J.; Lee, Y.-H. (Copernicus Publications on behalf of the European Geosciences Union, 2009-10-08)
    Inclusion of fundamental ecological interactions between carbon and nitrogen cycles in the land component of an atmosphere-ocean general circulation model (AOGCM) leads to decreased carbon uptake associated with CO2 ...
  • Contribution of ocean, fossil fuel, land biosphere, and biomass burning carbon fluxes to seasonal and interannual variability in atmospheric CO2 

    Nevison, Cynthia D.; Mahowald, Natalie M.; Doney, Scott C.; Lima, Ivan D.; van der Werf, Guido R.; Randerson, James T.; Baker, David F.; Kasibhatla, Prasad S.; McKinley, Galen A. (American Geophysical Union, 2008-02-12)
    Seasonal and interannual variability in atmospheric carbon dioxide (CO2) concentrations was simulated using fluxes from fossil fuel, ocean and terrestrial biogeochemical models, and a tracer transport model with time-varying ...
  • Desert dust and anthropogenic aerosol interactions in the Community Climate System Model coupled-carbon-climate model 

    Mahowald, Natalie M.; Lindsay, Keith; Rothenberg, D.; Doney, Scott C.; Moore, J. Keith; Thornton, Peter E.; Randerson, James T.; Jones, C. D. (Copernicus Publications on behalf of the European Geosciences Union, 2011-02-15)
    Coupled-carbon-climate simulations are an essential tool for predicting the impact of human activity onto the climate and biogeochemistry. Here we incorporate prognostic desert dust and anthropogenic aerosols into the ...
  • Multicentury changes in ocean and land contributions to the climate-carbon feedback 

    Randerson, James T.; Lindsay, Keith; Munoz, E.; Fu, W.; Moore, J. Keith; Hoffman, Forrest M.; Mahowald, Natalie M.; Doney, Scott C. (John Wiley & Sons, 2015-06-02)
    Improved constraints on carbon cycle responses to climate change are needed to inform mitigation policy, yet our understanding of how these responses may evolve after 2100 remains highly uncertain. Using the Community Earth ...
  • Precision requirements for space-based XCO2 data 

    Miller, C. E.; Crisp, D.; DeCola, P. L.; Olsen, S. C.; Randerson, James T.; Michalak, Anna M.; Alkhaled, A.; Rayner, Peter; Jacob, D. J.; Suntharalingam, P.; Jones, D. B. A.; Denning, A. S.; Nicholls, M. E.; Doney, Scott C.; Pawson, S.; Boesch, H.; Connor, B. J.; Fung, Inez Y.; O'Brien, D.; Salawitch, R. J.; Sander, S. P.; Sen, B.; Tans, Pieter P.; Toon, G. C.; Wennberg, Paul O.; Wofsy, Steven C.; Yung, Y. L.; Law, R. M. (American Geophysical Union, 2007-05-26)
    Precision requirements are determined for space-based column-averaged CO2 dry air mole fraction (XCO2) data. These requirements result from an assessment of spatial and temporal gradients in XCO2, the relationship between ...
  • Preindustrial-control and twentieth-century carbon cycle experiments with the Earth System Model CESM1(BGC) 

    Lindsay, Keith; Bonan, Gordon B.; Doney, Scott C.; Hoffman, Forrest M.; Lawrence, David M.; Long, Matthew C.; Mahowald, Natalie M.; Moore, J. Keith; Randerson, James T.; Thornton, Peter E. (American Meteorological Society, 2014-12-15)
    Version 1 of the Community Earth System Model, in the configuration where its full carbon cycle is enabled, is introduced and documented. In this configuration, the terrestrial biogeochemical model, which includes ...
  • Separating the influence of temperature, drought, and fire on interannual variability in atmospheric CO2 

    Keppel-Aleks, Gretchen; Wolf, Aaron S.; Mu, Mingquan; Doney, Scott C.; Morton, Douglas C.; Kasibhatla, Prasad S.; Miller, John B.; Dlugokencky, Edward J.; Randerson, James T. (John Wiley & Sons, 2014-11-19)
    The response of the carbon cycle in prognostic Earth system models (ESMs) contributes significant uncertainty to projections of global climate change. Quantifying contributions of known drivers of interannual variability ...