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The terrestrial biosphere is responsible for most of the interannual variability in measurements of atmospheric
carbon dioxide through the interactions between fire, growth and soil respiration. The annual processes of
growth in the spring and summer followed by decay in the autumn and winter provide the backdrop upon which the
climatic modes of variability such as ENSO and the Annular Modes lead to measurable changes in the short-term
increase of carbon dioxide in the atmosphere.
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Shevliakova et al. (2006)
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In previously published work, we documented the link between the drawdown of carbon dioxide by Northern
Hemisphere terrestrial vegetation and the position of the westerly winds in the winter. As an extension
of that study, we are using a dynamic vegetation model (LM3V; Shevliakova, 2006) coupled in the GFDL
global climate model, to project the impact of potential future changes in the position of the Westerlies
on Northern Hemisphere vegetation and atmospheric carbon dioxide. We are working in collaboration with
colleagues like Elena Shevliakova at Princeton University to quantitatively examine and project the
interplay between vegetation, fire, land-use and climate variability in the GFDL global climate model.
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Relevant Papers:
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Delworth, T.L., A.J. Broccoli, A. Rosati, R.J. Stouffer, V. Balaji, J.A. Beesley, W.F. Cooke, K.W. Dixon, J. Dunne, K.A. Dunne, J.W. Durachta, K.L. Findell, P. Ginoux, A. Gnanadesikan, C.T. Gordon, S.M. Griffies, R. Gudgel, M.J. Harrison, I.M. Held, R.S. Hemler, L.W. Horowitz, S.A. Klein, T.R. Knutson, P.J. Kushner, A.R. Langenhorst, H-C. Lee, S-J. Lin, J. Lu, S.L. Malyshev, P.C.D. Milly, V. Ramaswamy, J.L. Russell, E. Shevliakova, M.D. Schwarzkopf, J.J. Sirutis, M.J. Spelman, W.F. Stern, M. Winton, A.T. Wittenberg, B. Wyman, F. Zeng, and R. Zhang (2006), GFDL's CM2 Global Coupled Climate Models. Part I: Formulation and simulation characteristics. J. Climate, 19(5), 643-674.
(pdf)
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Russell, J.L., & J.M. Wallace (2004), Annual carbon dioxide drawdown and the Northern Annular Mode, Global Biogeochem. Cycles, 18, GB1012, doi:10.1029/2003GB002044.
(pdf)
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Russell, J.L., & J.M. Wallace, Modulation of atmospheric composition by the ENSO cycle: analysis of observations of a suite of trace gases using a simple 12-month running difference filter. Global Biogeochem. Cycles, submitted.
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Russell, J.L., E. Shevliakova & S. Malyshev, Annual Carbon Dioxide Drawdown and the Northern Annular Mode as Simulated by LM3V, Global Biogechem. Cycles, in preparation.
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