Laserfiche WebLink
<br /> / <br /> 100 ~ <br /> . <br /> t:/ . <br />w / <br />~ 80 / <br />:I: / <br />I- t/ <br />~ 60 6/ <br />en 6 "7 <br />0 <br />~ / <br />0 40 / <br />...J 6--6 MOSSOP 8t 01 (970) <br />u / <br />IL. tf I SAAC a <br />0 0---0 SCHEMENAUER (979) <br /> 20 / <br />;Ie - PRESENT WORK <br /> 0 <br /> 0 -4 -8 -12 -16 -20 -24 <br /> TEMPERATURE OF CLOUD TOP (OCI <br /> <br /> <br />Fig. 2.17: Percentage of clouds with ice crystal concentration greater <br />than 0.1, as a function of cloud top temperature. <br /> <br />When regions not near cloud top, or clouds later in their life <br /> <br />cycle, were examined, ice crystal concentrations were often much <br /> <br />higher. <br /> <br />Hobbs et al. (1980) frequently measured concentrations in <br /> <br />excess of SOIL, and attributed the high concentrations to same process <br /> <br />of ice multiplication. <br /> <br />Similarly, Fig. 2.18 shows ice crystal <br /> <br />concentrations measured during all first passes by the King Air in <br /> <br />1978 that were between -S and -lSoC. Ice concentrations exceeding <br /> <br />100lL were often observed, and only 40% of the clouds had ice <br /> <br />concentrations smaller than IlL. In ccxnbination with the evidence of <br /> <br />Fig. 2.16, Fig. 2.18 suggests that some mechanism of seconda1;Y...lce <br /> <br />crystal production is commo~,wj.n,_,hh!~~.a_r.~a_. <br /> <br />Stud ies of ice <br /> <br />multiplication will be discussed again in fi3.4. <br /> <br />27 <br />