Fig. 1: Observed warming rates affected by irrigation.
From: Warming of hot extremes alleviated by expanding irrigation
Boxplots of the total (\(\Delta {\rm{TXm}}\), a, b) and irrigation-induced (\(\Delta {\rm{TX{m}}}_{{\rm{irr}}}\), c, d) change in average daily maximum temperature during the hottest month of the year for global land (a, c) and South Asia (b, d) between 1901 and 1930 and 1981 and 2010. Results were binned by the change in grid cell fraction equipped for irrigation (hereafter referred to as irrigated fraction \({f}_{{\rm{irr}}}\)) between both periods. Cell counts per bin for \(\Delta {\rm{TX{m}}}_{{\rm{irr}}}\) are indicated in e, f. Blue bars represent results from the CRU observational data, orange bars show results from the CESM global climate simulations. Boxplots indicate the spatial distribution (centre line: median; box limits: upper and lower quartiles; whiskers and outliers: not shown) and are only plotted for bins containing \(\ge\! 5\) pixels. Note that most grid cells with \({f}_{{\rm{irr}}}> 0.5\) for the global land are situated in South Asia.
