"Andrew Sarangan" wrote in message
1...

That's interesting, but I find it strange that moisture content does not
change the adiabatic lapse rate. Moist air has a higher heat capacity than
dry air, so I would expect the adiabatic lapse rate of moist air (but
unsaturated) to be lower than dry air.

True enough, but the difference in heat capacity is small. At 15 degC,
saturated air is still less than 2% water vapor, and the heat capacity of
water vapor is less than twice that of air. So you'd expect the variation
to be no more than a percent or two. That pales in comparison with the
difference made by condensation of that water vapor.

Julian Scarfe