1), by locating the lifting condensation level (LCL, where the temperature and the dewpoint are equal) of a parcel of air on a thermodynamic chart and then following the moist adiabat from the LCL back down to the surface.
Then the moist adiabat is followed downward (red arrow) to the 1,000-hPa level, obtaining [T.sub.w][approximately equal to] -2[degrees]C.
In studies of the general circulation and of tropical convection, he always extolled the importance of vertical mixing by cumulonimbus convection, and became known for his catch-phrase "up moist-down dry," referring to the upward motion in a convective core following a
moist adiabat, and the large-scale downward motion in the Hadley Cell and trade wind regions following the dry adiabat.