FIGURE 2. Comparison of observed and modelled climate variables relevant to the Amazonian drought of 2005.
From the following article:
Increasing risk of Amazonian drought due to decreasing aerosol pollution
Peter M. Cox, Phil P. Harris, Chris Huntingford, Richard A. Betts, Matthew Collins, Chris D. Jones, Tim E. Jupp, José A. Marengo & Carlos A. Nobre
Nature 453, 212-215(8 May 2008)
doi:10.1038/nature06960
Evolution of July–October mean values of a, the ANSG index; b, rainfall in western Amazonia. Observations are shown in black17, 20, with the thin lines corresponding to annual values and the thick lines showing 20-yr running means. The other lines show 20-yr running means from the HadCM3LC GCM. The red line corresponds to a simulation of climate change driven by greenhouse gas increases only3, whereas the green line additionally includes changes in aerosols, stratospheric and tropospheric ozone, and revised fluxes of CO2 from land-use change8. The large cross in a and the bar in b show the estimated values for July–October 2005.