There is no manipulation in reporting. This is all based in scientific principles and documentation.
The film loop below has been improved on and there are more accurate maps have been compiled. The science of 'environmental modeling' is really new to climate science. Earth is so very, very complicated that linear projections are grossly inaccurate. Computer programs have evolved. I would never state they are perfect. The best and most accurate record of the climate crisis comes from scientists on the ground and/or those that monitor climate.
The current scientific measurements are more sophisticated than even five years ago. It is impossible to enter all the scientific data produced regarding the climate crisis into a computer, although the modelers attempt to do exactly that. The best source regarding the climate crisis still remains to be thinking scientists.
Uploaded on Nov 1, 2011
The
United States and many other heavily populated countries face a growing
threat of severe and prolonged drought in coming decades, according to a
new study by National Center for Atmospheric Research (NCAR) scientist
Aiguo Dai. The detailed analysis concludes that warming temperatures
associated with climate change will likely create increasingly dry
conditions across much of the globe in the next 30 years, possibly
reaching a scale in some regions by the end of the century that has
rarely, if ever, been observed in modern times.The movie shows the evolution of the annual mean self-calibrated Palmer Drought Severity Index (PDSI), a measure of meteorological drought, calculated using surface meteorological data from multiple models of the CMIP3 project under a moderate emissions scenario (A1B) and the Penman-Monteith equation for potential evapotranspiration. Negative values are for dry conditions and values below -3 are considered severe to extreme drought by today's standard.
