Question

Sounding plotted on skew-T diagram

This sounding comes from Fairbanks, AK. On this skew-T diagram, downloaded from the JAAWIN Website, mixing ratio lines are dashed green.

What is the saturation vapor pressure (es) at 850 hPa for the sounding?
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es (850 hPa) = hPa

Answer: es (850 hPa) = about 6.5 hPa
From T = 0°C at 850 hPa, go up the 0°C isotherm to 622 hPa. The value of the saturation mixing ratio line at 622 hPa is about 6.5 g/kg. Thus the saturation vapor pressure at 850 hPa is about 6.5 hPa.
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