Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat

Nonlinear increases in warm season temperatures are projected for many regions, a phenomenon we show to be associated with relative surface drying. However, negative human health impacts are physiologically linked to combinations of high temperatures and high humidity. Since the amplified warming and drying are concurrent, the net effect on humid-heat, as measured by the wet bulb temperature ( T W ), is uncertain. We demonstrate that globally,...