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Last modified
7/28/2009 2:31:54 PM
Creation date
10/22/2007 11:47:37 AM
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Weather Modification
Title
The Southern Plains Experiment in Cloud Seeding of Thunderstorms for Rainfall Augmentation Phase I (SPECTRA 1)
Prepared For
Texas Department of Licensing and Regulation
Prepared By
Duncan Axisa, Seeding Operations and Atmospheric Research
Date
3/1/2006
State
TX
Weather Modification - Doc Type
Report
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Figure 17a: Cloud droplet effective diameters range Figure 17b: Precipitation size drops are <br />from around 27 to 32 µm. measured above the cloud base in the first <br />penetration. <br />1st Set1st Set1st Set1st Set <br />Figure 17c: Maximum CIP concentrations are Figure 17d: CIP images at 00:19:26 (2939m), <br />measured at 3.2 km at 100 L. Cloud droplet 00:19:30 (2953m), 00:19:37 (2978m), 00:21:57 <br />-1 <br />concentrations are multiplied by a factor of two to (3218m). <br />correct for the undercounting of the CDP. <br />The SOAR research aircraft departed the Austin airport at 19:23Z and headed towards the Galveston Bay <br />area. Air traffic control imposed limitations on the research operations due to the incoming traffic into <br />Houston International/Houston Hobby and the prevalent weather conditions. At 23:16Z, cloud bases were <br />observed to be composed of cumulus showers below 1100m with tops around 1500m. Bases were <br />observed to be even lower closer to Galveston Bay, so the crew decided to climb through the clouds to <br />40 <br />
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