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Last modified
7/28/2009 2:39:07 PM
Creation date
4/18/2008 10:00:36 AM
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Weather Modification
Title
A Diagnostic Technique for Targeting During Airborne Seeding Experiments in Wintertime Storms over the Sierra Nevada
Date
7/7/1988
Weather Modification - Doc Type
Report
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<br />00 <br />N <br />.j::o. <br /> <br />(plus). <br /> <br />is designated CO2 (asterisk) or AgI <br /> <br />Observed <br />growth <br />rate <br />()lm S-I) <br /> <br />Predicted <br />major axis <br />at sampling <br />temperalure <br /> <br />The seeding agent for each date <br /> <br />Predicted <br />growth rate <br />at sampling <br />temperature <br />()lms-I) <br /> <br />Temperature <br />at King-Air <br />sampling <br />altitude (oC) <br /> <br />TABLE 3. Comparison of observed and predicted particle growth rates during seedline penetrations. <br /> <br />Predicted <br />major axis <br />at seeder <br />temperature <br /> <br />Predicted <br />growth rate <br />al seeder <br /> <br />Temperature <br />at seeder <br />aircraft <br />altitude (oC) <br /> <br />Typical <br />particle <br />size(jlm) <br /> <br />Time after <br />seeding <br />(min) <br /> <br />...... <br />o <br />c::: <br />:;0 <br />z <br />;> <br />r< <br />o <br />'Tl <br />;> <br />." <br />." <br />r< <br />...... <br />tTl <br />tl <br /> <br />a:: <br />tTl <br />>-l <br />tTl <br />o <br />:;0 <br />o <br />r< <br />o <br />Q <br />><: <br /> <br />Comments on ambient cloud <br />conditions <br /> <br />LWC: <0.1 g m-' (generally low). <br />Natural ice particle cone (2OC) < <br />L-I <br />LWC: 0.0-0.2 g m-' (genera1Iy low). <br />2OC: <5 L-I <br />LWC: 0.0-0.2 g m-' (present in plume <br />2OC: <10 L-I <br />LWC: 0.0-0.2 g m-' (in pockets. mostly <br />near 0). 2OC: <I L-I <br />LWC: 0.0-0.2 g m-' (mostly near zero). <br />2OC: <10 L-I <br />LWC: 0.1-0.5 g m-' (highest in cells). <br />2OC: <5 L-I <br /> <br />0.22-0.44 <br /> <br />0.70-1.10 <br /> <br />0.16-0.27 <br /> <br />0.54 <br /> <br />.04 <br /> <br />0.52 <br />0.52 <br /> <br />-12.0 <br /> <br />-5.5 <br /> <br />-7.5 <br />-7.5 <br /> <br />temperature <br />()lms-I) <br /> <br />0.92 <br /> <br />0.62 <br /> <br />0.33 <br /> <br />-13.0 <br /> <br />-11.0 <br /> <br />-7.0 <br /> <br />Particle habits <br /> <br />0.37-0.55 <br /> <br />0.18-0.30 <br /> <br />(almost all zero) <br /> <br />LWC: 0.0-0.05 g m- <br />2OC: <5 L-I <br />LWC: 0.0 g m-'. 2OC: <5 L-I <br />LWC: 0.05-0.10 g m-'. 2OC: <5 L-I <br />LWC: 0.05-0.10 g m-' (pockets to <br />0.25). 2OC: <5 el <br />LWC: 0.05-0.10 g m-'. 2OC: <5 L-I <br />LWC: 0.05-0.10 g m-'. 2OC: <15 L-I <br />LWC: 0.05-0.10 g m-'. 2OC: <15 L-I <br />LWC: 0.1 g m-'. 2OC: <45 L-I <br /> <br />0.28-0.70 <br /> <br />0.15-0.25 <br />0.17-0.70 <br />0.12-0.57 <br /> <br />0.52 <br /> <br />-7.5 <br /> <br />0.33 <br /> <br />0.33 <br /> <br />O. I 5-0.29 <br /> <br />0.62 <br /> <br />0.54 <br /> <br />0.54 <br />0.73 <br />0.73 <br /> <br />.0 <br /> <br />-11.0 <br /> <br />-7.0 <br /> <br />-12.0 <br /> <br />-12.0 <br />-12.5 <br />-12.5 <br /> <br />0.25 <br /> <br />.42 <br /> <br />1.42 <br />1.83 <br />1.83 <br /> <br />-9.0 <br /> <br />-14.0 <br />-15.0 <br />-15.0 <br /> <br />-14.0 <br /> <br />Plates, some <br />branching <br />observed <br />Regular thick <br />columns <br />Columns or <br />needles <br />Thick column: <br />or plates? <br />Rimed <br />irregularly? <br />Rimed irreg. <br />columns <br />and needles <br />Plates <br /> <br />Plates <br />Plates <br />PIales <br /> <br />250-500 <br /> <br />400-600 <br /> <br />300-500 <br /> <br />19.0 <br /> <br />31.0 <br /> <br />9.5 <br /> <br />Date <br /> <br />02 Feb. 80+ <br /> <br />Mar. 80+ <br /> <br />05 Feb. 83* <br /> <br />03 <br /> <br />200-300 <br /> <br />300-500 <br /> <br />9.0 <br /> <br />28.0 <br /> <br />05 Feb. 83* <br /> <br />05 Feb. 83* <br /> <br />200-500 <br /> <br />300-500 <br />100-400 <br />100-500 <br /> <br />200-400 <br /> <br />12.0 <br /> <br />33.0 <br />9.5 <br />14.5 <br /> <br />23.0 <br /> <br />24 Feb. 84* <br /> <br />26 Jan. 85* <br /> <br />26 Jan. 85* <br />28 Jan. 85* <br />28 Jan. 85* <br /> <br />0.11-0.35 <br />0.47-0.95 <br />0.32-0.43 <br />0.44-0.67 <br /> <br />a <br />a <br />a <br />a <br /> <br />0.73 <br />0.92 <br />0.92 <br />0.54 <br /> <br />-12.5 <br />-13.0 <br />-13.0 <br />-12.0 <br /> <br />a <br />a <br />a <br />a <br /> <br />1.83 <br />1.83 <br />1.83 <br />0.27 <br /> <br />-15.0 <br />-15.0 <br />-15.0 <br />-9.5 <br /> <br />80 L- <br /> <br />2OC: <br /> <br />LWC: 0.0 g m-' <br /> <br />0.20-0.39 <br /> <br />0.27 <br /> <br />-9.5 <br /> <br />0.27 <br /> <br />-9.5 <br /> <br />2OC: 40 L-I <br /> <br />LWC: 0.0 g m- <br /> <br />0.20-0.33 <br /> <br />0.32 <br /> <br />-10.7 <br /> <br />0.27 <br /> <br />-9.5 <br /> <br />30 L-I <br /> <br />2OC: <br /> <br />LWC: 0.05 g m- <br /> <br />0.18-0.32 <br /> <br />0.33 <br /> <br />-11.0 <br /> <br />0.27 <br /> <br />-9.5 <br /> <br />I-50 L-I <br />I-50 L-I <br /> <br />2OC: <br />2OC: <br /> <br />LWC: 0.1-0.4 g m- <br />LWC: 0.1-0.4 g m- <br /> <br />0.18-0.70 <br />0.08-0.73 <br /> <br />1.26 <br />0.80 <br /> <br />-6.0 <br />-4.5 <br /> <br />1.26 <br />1.26 <br /> <br />-6.0 <br />-6.0 <br /> <br />Plates <br />Plates <br />Plates <br />Rimed <br />particles' <br />Rimed <br />particles' <br />Rimed <br />particles' <br />Rimed <br />particles? <br />Columns <br />Rimed <br />particles <br />Irregular <br /> <br />150-500 <br />100-200 <br />300-400 <br />200-300 <br /> <br />23.5 <br />3.5 <br />15.5 <br />7.5 <br /> <br />28 Jan. 85* <br />02 Feb. 85* <br />02 Feb. 85* <br />05 Feb. 86* <br /> <br />200-400 <br /> <br />17.0 <br /> <br />05 Feb. 86* <br /> <br />300-500 <br /> <br />25.0 <br /> <br />400-700 <br /> <br />100-400 <br />200-1750 <br /> <br />36.0 <br /> <br />05 Feb. 86* <br /> <br />05 Feb. 86* <br /> <br />9.5 <br />40.0 <br /> <br />86+ <br />86+ <br /> <br />Dec. <br />Dec. <br /> <br />18 <br />18 <br /> <br />25-50 <br />25-50 <br /> <br />2OC: <br />2OC: <br /> <br />L WC: 0.05-0.20 g m- <br />L-I <br />LWC: 0.05-0.20 g m- <br />L-I <br />LWC: 0.05-0.20 g m- <br />L-I <br /> <br />0.06-0.42 <br /> <br />0.04-0.55 <br /> <br />1.00 <br /> <br />0.83 <br /> <br />-5.0 <br /> <br />-6.8 <br /> <br />.00 <br /> <br />.00 <br /> <br />-5.0 <br /> <br />-5.0 <br /> <br />Irregular <br />Irregular <br /> <br />100-700 <br /> <br />100-1400 <br /> <br />28.0 <br /> <br />42.0 <br /> <br />86+ <br /> <br />86+ <br /> <br />Dec. <br /> <br />Dec. <br /> <br />22 <br /> <br />22 <br /> <br />~ <br />t <br />~ <br />m <br />tv <br />--.J <br /> <br />15-25 <br /> <br />2OC: <br /> <br />0.02-0.72 <br /> <br />a <br /> <br />0.40 <br /> <br />-11.0 <br /> <br />.00 <br /> <br />-5.0 <br /> <br />100-3500 <br /> <br />81.0 <br /> <br />86+ <br /> <br />Dec. <br /> <br />22 <br /> <br />,/' <br />JI.' <br /> <br /> <br />
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