Tephigram

A tephigram is one of a number^{[Note 1]} of thermodynamic diagrams commonly used in weather analysis and forecasting. The name evolved from the original name "T-${\displaystyle \phi }$-gram" to describe the axes of temperature (T) and entropy (${\displaystyle \phi }$) used to create the plot.^[1] Usually, temperature and dew point data from radiosondes are plotted on these diagrams to allow calculations of convective stability or convective available potential energy (CAPE).^[1] Wind barbs are often plotted at the side of a tephigram to indicate the winds at different heights.

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