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The pass segment shown in Figure 10 appears to have been made in the portion of the cloud having the <br />SF gas and presumably the salt nucleant. Here the cloud droplet distributions on the right have several seconds <br />6 <br />when drops exceeding 30 microns diameter, the largest being 41 microns. In this instance the ascription of these <br />drops to the effect of seeding is probably justified. This documentation callsinto question whether the earlier <br />pass segments showing a few larger drops might have been affected by the seeding, if the SF gas somehow got <br />6 <br />separated from the nucleated drops. Although this might seem to be a logical conclusion, one is not justified in <br />claiming that the larger drops measured outside the SFplume where unequivocally due to the seeding. Only <br />6 <br />with the concurrent measurement of the SF gas can one know for sure. <br />6 <br />Figure 10. As in Figure 6 but for the portion of the cloud pass within the SF gas plume. <br />6 <br /> Although there is a wealth of additional information available for this case, there is no point in <br />presenting it here. It does not add much to what has been learned for this case. Those wishing to dig further into <br />this case should refer to Appendices C, D and E for additional documentary information. <br />Post Flight: <br />After the flight, a debriefing followed to discuss the operational procedures and how they can be improved. <br />During this debriefing it was noted that mission coordination was improving with time, but the clouds selected <br />had been of marginal quality. The absence of base updrafts means that the transport of the nucleant and gas had <br />been rather spotty. To assess the effects of seeding better clouds with stronger updrafts that will carry the gas <br />and nucleant higher into the clouds are needed. <br /> A few minimal hits and one large hit of SFgas were obtained in the clouds of today. At the large hit <br />6 <br />much larger cloud drops were noted in the tail of the distribution, as expected. The aircraft was at only 3500 ft <br />above cloud base, which was too low to expect any precipitation. There is a need to keep monitoring at the same <br />elevation but at a higher altitude above the seeder, so that the particles will be manifested also in the larger CIP <br />images <br />34 <br />