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An international alliance of climate scientists says that contrary to the general perception, and despite widely-reported rises in global temperature towards the end of the 20th century, there has in fact been no measurable increase in droughts over the past 60 years.
Writing in heavyweight boffinry journal Nature, the team from America's Princeton and the Australian National University have this to say:
Here we show that the previously reported increase in global drought is overestimated because [the current method] uses a simplified model of potential evaporation that responds only to changes in temperature and thus responds incorrectly to global warming in recent decades. More realistic calculations, based on the underlying physical principles that take into account changes in available energy, humidity and wind speed, suggest that there has been little change in drought over the past 60 years.
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