"Although the hydrological cycle may increase in intensity, it does so at the expense of its ability to do work, such as powering large-scale atmospheric circulation or fueling more very intense storms."The paper adds to many others demonstrating that a warmer climate is a more benign climate with fewer extreme weather events, opposite the claims of climate alarmists. Claims of global warming producing more extreme weather due to "more energy in the system" are refuted by the paper which finds the atmosphere will become "less energetic" and the atmospheric "Carnot engine" will become less efficient at performing Work (such as generating intense winds and storms) due to global warming and a decrease of temperature differentials.
Note also the great physicist and engineer Carnot, who was the first to describe the atmosphere as a heat engine, agreed in his writings with both Maxwell and Clausius that the atmospheric temperature gradient, aka now called the "greenhouse effect," is a consequence of atmospheric mass/gravity/pressure rather than irradiance.
It has been widely accepted since Carnot's seminal work (1) that the atmosphere acts as a thermodynamic heat engine: Air motions redistribute the energy gained from the Sun in the warm part of the globe to colder regions where it is lost through the emission of infrared radiation to space (facilitated by greenhouse gases). Through this process, some internal energy is converted into the kinetic energy needed to maintain the atmospheric circulation against dissipation. The analogy to a heat engine has been applied to explain various atmospheric phenomena, such as the global circulation (2), hurricanes (3), and dust devils (4). On page 540 of this issue, Laliberté et al. (5) show that the hydrological cycle reduces the efficiency of the global atmospheric heat engine.
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