ABSTRACT
It is virtually certain that global temperatures have increased by about 0.85°C during the period 1880-2012 (Stocker et al., 2013). Anthropogenic greenhouse gas (GHG) emissions were identified as the most likely cause of the observed radiative forcing. Global circulation models (GCMs) have projected the effects of continued emissions on the global climate, and an additional increase of 1.4-3.1°C by the end of this century was found to be likely (Stocker et al., 2013). The implications of increased atmospheric energy on the distribution of precipitation were less certain. However, there is increasing consensus that the risk of drought has increased over the past decades. GCMs were found to reproduce these trends and projected additional drought risk for the coming 30-90 yrs, either through decreased precipitation or increased evaporation (Dai, 2013).
