New paper: No change in global drought percentage since 1901
Published in AGU's Earth & Space Science Journal: 'Variability and trends in global drought
Authors' - Gregory J. McCabe, David M. Wolock - First published: 27 June 2015
'Results indicate that for the past century %drought has not changed, even though global PET (potential evapotranspiration) and temperature (T) have increased.'