English: A Stüve diagram is one of four thermodynamic diagrams commonly used in weather analysis and forecasting. The Stüve diagram was developed circa 1927 by Georg Stüve (1888-1935) and quickly gained widespread acceptance in the United States. It has a simplicity in that it uses straight lines for the three primary variables: pressure, temperature and potential temperature. In doing so, however, it sacrifices the equal-area requirements (from the original Clausius-Clapeyron relation) that are satisfied in two of the other two diagrams (Skew-T and Tephigram). For practical purposes, this is not important. In the Stüve diagram, isotherms are straight and vertical, isobars are straight and horizontal and dry adiabats are also straight and have a 45 degree inclination to the left while moist adiabats are curved.
Français : Un des quatre diagrammes pour pointer la température et l'humidité d'une masse d'air
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One of the four diagram to plot temperatures and humidity of an airmass. Un des quatre diagrammes pour pointer la température et l'humidité d'une masse d'air