Impact of changes in diffuse radiation on the global land carbon
sink Mercado, Lina M.; Bellouin, Nicolas; Sitch, Stephen;
Boucher, Olivier; Huntingford, Chris; Wild, Martin; Cox, Peter
M.. 2009 Impact of changes in diffuse radiation on the global
land carbon sink. Nature, 458. 1014-1017.
10.1038/nature07949Before downloading, please read NORA
policies. MercadoN006771PP.pdf - Accepted Version Plant
photosynthesis tends to increase with irradiance. However,
recent theoretical and observational studies have demonstrated
that photosynthesis is also more efficient under diffuse light
conditions1–5. Changes in cloud cover or atmospheric aerosol
loadings, arising from either volcanic or anthropogenic
emissions, alter both the total photosynthetically active
radiation reaching the surface and the fraction of this
radiation which is diffuse, with uncertain overall effects on
global plant productivity and the land carbon sink. Here we
estimate the impact of variations in diffuse fraction on the
land carbon sink using