Offset of the potential carbon sink from boreal forestation by decreases in surface albedo

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Abstract

Carbon uptake by forestation is one method proposed1 to reduce net carbon dioxide emissions to the atmosphere and so limit the radiative forcing of climate change2. But the overall impact of forestation on climate will also depend on other effects associated with the creation of new forests. In particular, the albedo of a forested landscape is generally lower than that of cultivated land, especially when snow is lying3,4,5,6,7,8,9, and decreasing albedo exerts a positive radiative forcing on climate. Here I simulate the radiative forcings associated with changes in surface albedo as a result of forestation in temperate and boreal forest areas, and translate these forcings into equivalent changes in local carbon stock for comparison with estimated carbon sequestration potentials10,11,12. I suggest that in many boreal forest areas, the positive forcing induced by decreases in albedo can offset the negative forcing that is expected from carbon sequestration. Some high-latitude forestation activities may therefore increase climate change, rather than mitigating it as intended.

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Figure 1: Effects of forestation on the solar radiation budget.
Figure 2: Effects of albedo change on annual-mean global radiative forcing in terms of carbon stock change.

References

  1. 1

    UNFCCC Kyoto Protocol to the United Nations Framework Convention on Climate Change Art. 3.3 (UNEP/INC/98/2, Information Unit for Conventions, UNEP, Geneva, 1998) <http://www.unfccc.int/resource/docs/convkp/kpeng.pdf>.

  2. 2

    UNFCCC United Nations Framework Convention on Climate Change Art. 2 (UNEP/IUC/99/2, Information Unit for Conventions, UNEP, Geneva, 1999); <http://www.unfccc.int/resource/convkp.html>.

  3. 3

    Robinson, D. A. & Kukla, G. Albedo of a dissipating snow cover. J. Climatol. Appl. Meteorol. 23, 1626–1634 (1984).

  4. 4

    Harding, R. J. & Pomeroy, J. W. The energy balance of the winter boreal landscape. J. Clim. 9, 2778– 2787 (1996).

  5. 5

    Sharratt, B. S. Radiative exchange, near-surface temperature and soil water of forest and cropland in interior Alaska. Agric. Forest Meteorol. 89, 269–280 (1998).

  6. 6

    Thomas, G. & Rowntree, P. R. The boreal forests and climate. Q. J. R. Meteorol. Soc. 118, 469– 497 (1992).

  7. 7

    Bonan, G. B., Pollard, D. & Thompson, S. L. Effects of boreal forest vegetation on global climate. Nature 359, 716–718 (1992).

  8. 8

    Bonan, G. B., Chapin, F. S. & Thompson, S. L. Boreal forest and tundra ecosystems as components of the climate system. Clim. Change 29, 145–167 (1995).

  9. 9

    Douville, H. & Royer, J. F. Influence of the temperate and boreal forests on the Northern Hemisphere climate in the Météo-France climate model. Clim. Dyn. 13, 57– 74 (1997).

  10. 10

    Nabuurs, G. J. & Mohren, G. M. J. Modelling analysis of potential carbon sequestration in selected forest types. Can. J. Forest Res. 25, 1157–1172 (1995).

  11. 11

    Nilsson, S. & Schopfhauser, W. The carbon sequestration potential of a global reforestation program. Clim. Change 30, 267–293 (1995).

  12. 12

    Watson, R. T. et al. (eds) Land Use, Land-use Change and Forestry (Cambridge Univ. Press, Cambridge, 2000).

  13. 13

    Schimel, D. et al. in Climate Change 1995. The Science of Climate Change Ch. 2 (eds Houghton, J. T. et al.) 65–131 (Cambridge Univ. Press, Cambridge, 1995).

  14. 14

    Edwards, J. M. & Slingo, A. Studies with a flexible new radiation code. I: Choosing a configuration for a large-scale model. Q. J. R. Meteorol. Soc. 122, 689– 720 (1996).

  15. 15

    Pope, V. D., Gallani, M. L., Rowntree, P. R. & Stratton, R. A. The impact of new physical parametrizations in the Hadley Centre climate model - HadAM3. Clim. Dyn. 16, 123– 146 (2000).

  16. 16

    Hansen, J. E. et al. Efficient three dimensional global models for climate studies, Models I and II. Mon. Weath. Rev. 111, 609 –662 (1983).

  17. 17

    Wilson, M. F. & Henderson-Sellers, A. A global archive of land cover and soils data for use in general circulation climate models. J. Climatol. 5, 119–143 (1985).

  18. 18

    Woodward, F. I., Smith, T. M. & Emanuel, W. R. A global land primary productivity and phytogeography model. Glob. Biogeochem. Cycles 9, 471– 490 (1995).

  19. 19

    Myhre, G., Highwood, E. J., Shine, K. P. & Stordal, F. New estimates of radiative forcing due to well mixed greenhouse gases. Geophys. Res. Lett. 25, 2715–2718 (1998).

  20. 20

    Keeling, C. D. & Whorf, T. P. Atmospheric CO 2 Concentrations - Mauna Loa Observatory, Hawaii, 1958-1997 (NDP-001, Carbon Dioxide Information Analysis Centre, Oak Ridge, Tennessee, 1998).

  21. 21

    Willmott, C. J., Rowe, C. M. & Mintz, Y. Climatology of the terrestrial seasonal water cycle. J. Climatol. 5, 589–606 (1985).

  22. 22

    Cao, M. & Woodward, F. I. Dynamic responses of terrestrial ecosystem carbon cycling to global climate change. Nature 393, 249–252 (1998).

  23. 23

    Essery, R. Seasonal snow cover and climate change in the Hadley Centre GCM. Ann. Glaciol. 25, 362–366 (1997).

  24. 24

    Betts, R. A., Cox, P. M., Lee, S. E. & Woodward, F. I. Contrasting physiological and structural vegetation feedbacks in climate change simulations. Nature 387, 796–799 (1997).

  25. 25

    Levis, S., Foley, J. A. & Pollard, D. Potential high-latitude vegetation feedbacks on CO 2-induced climate change. Geophys. Res. Lett. 26, 747–750 (1999).

  26. 26

    Kondratyev, K. Y., Korzov, V. I., Mukhenberg, V. V. & Dyachenko, L. N. in Land Surface Processes in Atmospheric General Circulation Models (ed. Eagleson, P. S.) 463–514 (Cambridge Univ. Press, Cambridge, 1982).

  27. 27

    Gedney, N. & Valdes, P. J. The effect of Amazonian deforestation on the northern hemisphere circulation and climate. Geophys. Res. Lett. 27, 3053–3056 ( 2000).

  28. 28

    Cox, P. M., Betts, R. A., Jones, C. D., Spall, S. A. & Totterdell, I. J. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature 408, 184–187 ( 2000).

  29. 29

    Cox, P. M. et al. The impact of new land surface physics on the GCM simulation of climate and climate sensitivity. Clim. Dyn. 15, 183–203 (1999).

  30. 30

    Posey, J. W. & Clapp, P. F. Global distribution of normal surface albedo. Geofis. Int. 4, 333– 348 (1964).

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Acknowledgements

I thank S.E. Lee and F.I. Woodward for providing data from the Sheffield University vegetation model, and P.M. Cox, J.M. Edwards, R.L.H. Essery, W.J. Ingram, G.J. Jenkins, J.E. Lovelock, S. Nilsson, I.C. Prentice, P.R. Rowntree, K.P. Shine, P.J. Valdes and D.A. Warrilow for advice, comments and discussion. This work forms part of the Climate Prediction Programme of the UK Department of the Environment, Transport and the Regions.

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Correspondence to Richard A. Betts.

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