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<br />Table 2.1a: Selection criteria used for the IIse1ected c10udsll of <br />Table 2.1. <br /> <br />1. Average liquid water content, averaged over 1 km, greater than <br />0.5 g/m3 for some 1 km portion of the first cloud pass. <br />I <br />2. Average ice crystal concentration less than l/L in the region <br />selected for (1). <br /> <br />3. Maximum ice crystal concentration less than 5/L for any l-km <br />region during the first pass through the cloud. <br /> <br />4. Vertical wind greater than -1 m/s when averaged over the region <br />selected for (1). <br /> <br />5. If the vertical velocity was greater than 10 m/s and the buoyancy <br />exceeded loe, the candidate cloud was rejected. <br /> <br />6. The length of the first penetration less than 6 km. <br /> <br />35 <br />