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<br /> 100 <br /> 80 <br /> 60 <br />ll': <br />IJ.I <br />m <br />:=E 40 <br />:::J <br />Z <br /> 20 <br /> 0 <br /> 0.01 <br /> <br />. <br /> <br />'"iiT1'I ,~c~" i =~~=ni=; Y\r=YI~'T:nir~'=r==:=1 ~iT'iTTr""!'''=,ot"', <br /> <br />"'" 100 <br /> <br /> <br />80 <br /> <br />~ <br />o <br /> <br />. <br /> <br />60 <br /> <br />IJ.I <br />> <br />~ <br />..J <br />:::J <br />:=E <br />:::J <br />o <br /> <br />. <br /> <br />40 <br /> <br />20 <br /> <br />1J11_,LL1,~l.-L-,-=!..UJJ:J~~.L_ 0 <br />O. 10 1. .00 10.,00 !. CO. 80 1000.00 <br /> <br />. <br /> <br />SHADOW- OR 2DC CONC (I liter) <br /> <br />Fig. 2.18: Differential (thin line) and cumulative (thick line) <br />distributions for the ice concentration measured during first-passes <br />through clouds in 1978. The average ice concentration from the 1-kIn <br />region with the maximum liquid water content was plotted for each <br />pass, and only passes between the -5 and -150C levels were included. <br /> <br />. <br /> <br />. <br /> <br />2.9: (4:drafts. In CuCg clouds, the measured updrafts _!leregenerally <br /> <br />modest and appeared more consistent with turbulence features than with <br /> <br />_oEga.I1ized upward motions. <br /> <br />Fig. 2.19 shows the frequency wi th which <br /> <br />. <br /> <br />various magnitudes of the vertical wind were measured. Each value in <br /> <br />this histogram represented a 1-kIn average measuranent in one of the <br /> <br />clouds from the 1978 field season. The distribution is surprisingly <br /> <br />. <br /> <br />symmetrical: the mean is only about 1 m(s and the standard deviation is <br /> <br />about 4 reVs. This figure supports the suggestion above that the vertical <br /> <br />wind is dominated by motions of a turbulent nature and is rather <br /> <br />. <br /> <br />disorganized in most of the clouds. The l-kIn average vertical wind <br /> <br />exceeded 10 m/s in only 2.6% of the cases, so strong updrafts were <br /> <br /> <br />rare at the (-5 to -150C) level of these penetrations. The distribution <br /> <br />in Fig. 2.19 is very similar to the distribution determined from the <br /> <br />. <br /> <br />28 <br /> <br />. <br />