Figure 5. d ln L/dTc and Tc adapted from the adiabatic cloud liquid water content of Betts and Harshvandhan (1987) (open squares) and the subadia-batic cloud liquid water content of Somerville and Remer (1984) (solid squares). The lines represent the polynomial regression fits to the individual dataset.
With the values of d ln T/dT being negative, the values of dln L/dT being positive, and the values of dln re/dT being near zero, the values of d ln D/dT are expected to be negative.
Figure 6 shows the estimated values of dln D/dT for the data shown in Fig. 4, where calculations made with the adiabatic value are plotted in open squares, and calculations made with the subadiabatic value are plotted in solid squares. The range of these calculated values for dln D/dT reaches between —0.05°C_1 and —0.10°C~1 in midlatitudes and subtropics, but shows some positive values at about 0.05°C_1 in the tropics. The negative value implies that cloud geometrical thickness would have decreased by about 0.05-0.10km per kilometer cloud thickness if the cloud LWC varied at the
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