Chapter Nineteen: Major Application: Hurricanes and Global Warming

why can we treat water vapour as an ideal gas

if air over the tropical sea is saturated with water vapour there is still a low density of water molecules in the vapour phase

what is the equation for the total pressure of wet air

P = Pd + Pv where Pd is the pressure of dry air and Pv is the pressure of water vapour

what is Ps(T)

the maximum value of Pv where at this temp and pressure the water vapour is in equilibrium with liquid water

what happens when Pv<Ps

more water will evaporate

what happens is Pv > Ps

some water will condense back into liquid water

where is Ps(T) and why

in the LV coexistence curve due to the behavior when Pv doesn’t equal Ps

why does boiling occur at lower temp at the top of mountains

Ps(Tb) = 1atm and atmospheric pressure reduced with height

what is the saturation mixing ratio ws

the value of w when mw reaches maximum

what is the equation for relative humidity

r = w/ws

what are the pressures of water vapour and dry air

they behave as ideal gases so Pv = pvRvT, Pd = pdRdT where Rv = R/Mv and Rd= R/Md where M is the respective molecular weights

what is the alternative form of mixing ratio

w = E Pv/Pd where E = Mv/Md

what is w - w0 ……………………………