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<br /> <br />30 <br /> <br />25 <br /> <br />20 <br /> <br />51 (01.) <br />15 <br /> <br />10 <br /> <br />5 <br /> <br />o <br />-5 <br /> <br />- <br />~ <br />- <br />)( <br />:3 <br />~ <br /> <br />~ <br />~~{ <br />a: <br />u <br />~ <br />~ <br />~ <br />~ <br />let <br />5 ~~{ <br />2 <br />::>> <br />u <br /> <br />48 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />a <br /> <br />-15 -20 <br />TEMPERATURE (OC) <br /> <br />-25 <br /> <br />ij · -17.5OC <br />511 a! 6.5% <br />T2 · -18.5OC <br />512 a! 14.50/. <br /> <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />x <br />XX <br />x <br />XX <br />x <br /> <br />Q <br />~ <br />2 <br />a: <br />~ <br />~ <br />(.) <br />3 <br /> <br />b <br /> <br />x <br />'--' '--' <br />~tl 2 ~t2 <br />TIME (min) <br />I . <br />-17 -18 <br />TEMPERATURE (OC) <br /> <br />I <br />-19 <br /> <br />Figure 4.2 Schematic of the thermodynamic history of a parcel between <br />ice and water saturation (a) during expansion-cooling, <br />representing a pathway over which deposition nucleation can <br />be measured. Computation of the nucleation rate at two <br />points is shown in (b). <br />