Causes for Asymmetric Warming of Sub‐Diurnal Temperature Responding to Global Warming

Defined as the difference between daily maximum (Tmax) and minimum surface air temperature (Tmin), diurnal range (DTR) is critical to local climate, ecosystem, socio-economic functioning. This study investigates how DTR responds future global warming, using a novel, fine-resolution convection-permitting regional climate model. Results demonstrate asymmetrical impact of that is, more substantial warming in Tmin, lower Tmax. asymmetry results reduction 0.5°K mid-latitude 0.25°K low-altitude area (under 2°K scenario). The increase daytime cloudiness under warmer climates likely responsible for incoming short-wave radiation reduction, consequently causing Tmax “underwarming.” Study also suggest atmospheric instability could play vital role response tropical areas.