Thermodynamic and dynamic controls on changes in the zonally anomalous hydrological cycle

摘要: The wet gets wetter, dry drier paradigm explains the expected moistening of extratropics and drying subtropics as atmospheric moisture content increases with global warming. Here we show, using precipitation minus evaporation (P − E) data from climate models, that it cannot be extended to apply regionally deviations zonal mean. Wet zones shift substantially in response shifts stationary-eddy circulations cause them. Additionally, circulation changes lead a smaller increase variance P E than would alone. change can split into dynamic thermodynamic components through an analysis budget. This reveals weakening variation transient-eddy fluxes moderate strengthening zonally anomalous hydrological cycle