What is now considered an unusually extreme drought conditions in North America, could be a normal state in that part of the American continent in the middle of this century because of global warming.

A team of scientists from U.S. national laboratories, Lawrence Berkeley and Lawrence Livermore, and U.S. Administration’s National Oceanic and Atmospheric Administration (NOAA for its acronym in English), has reached this conclusion after analyzing 19 different climate models of last generation.

Examining the balance between precipitation and evapotranspiration, the authors of the new research has found that global warming leads inexorably to drought, despite the many changes that may experience rainfall patterns over the next 100 years. Continue reading →