# sigma_to_pressure¶

metpy.calc.sigma_to_pressure(sigma, pressure_sfc, pressure_top)

Calculate pressure from sigma values.

Parameters
Returns

pint.Quantity – Pressure values at the given sigma levels

Notes

$p = \sigma * (p_{sfc} - p_{top}) + p_{top}$
• $$p$$ is pressure at a given sigma level
• $$\sigma$$ is non-dimensional, scaled pressure
• $$p_{sfc}$$ is pressure at the surface or model floor
• $$p_{top}$$ is pressure at the top of the model domain
Changed in version 1.0: Renamed psfc, ptop parameters to pressure_sfc, pressure_top