Table 1.

Microphysical properties of steady-state clouds

Exp. ID	$I,{\mathrm{c}\mathrm{m}}^{-3}\hspace{0.17em}{\mathrm{m}\mathrm{i}\mathrm{n}}^{-1}$	$n_h,{\mathrm{c}\mathrm{m}}^{-3}$	$n_c,{\mathrm{c}\mathrm{m}}^{-3}$	$\overline{d},\mathrm{\mu }\mathrm{m}$	${\sigma }_d,\mathrm{\mu }\mathrm{m}$
Case 1	7	0.2	18	25	8
Case 2	20	0.4	71	18	8
Case 3	67	30	378	12	5
Case 4	109	66	697	11	5
Case 5	172	158	1,082	9	4
6 K FW	33	1,073	771	4	2
7 K SW	33	1,327	1,038	5	3

Shown are time-averaged injection rate I, number density of haze droplets $n_h$, number density of cloud droplets $n_c$ , mean cloud droplet diameter $\overline{d}$, and SD of cloud droplet diameter ${\sigma }_d$. All of the experiments had a layer of liquid water approximately 1 cm in height at the chamber’s bottom boundary and a mean temperature of 20 ± 0:5 °C. Temperature difference between the bottom and top plate, $\mathrm{\Delta }T$: cases 1 to 5, 18 °C; 6 K FW, 6 °C; and 7 K SW, 7 °C. Abbreviations: Exp. ID, experiment identification number; FW, fresh water; SW, salt water. (See Experimental Observations and SI Appendix for details.)