10_geog2013_precip_clouds_W2016

10_geog2013_precip_clouds_W2016 - GEOG2013 Weather and...

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GEOG2013 Weather and Water Lecture 10. Precipitation & Clouds Part 2 Rain drop formation (cont’d) Nucleation Diffusion Collision & coalescence Readings: Ross (2013) Ch. 7, 9, 10 [email protected]/
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2 Stull 2015
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Activity: 1. Contrast and explain 2 of these relationships. 2. Why is homogeneous nucleation virtually impossible in the real atmosphere and can be neglected. Ross 2013 Köhler curve
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Liquid droplet growth by diffusion Fick’s Law of Diffusion: Activity: Why is the equilibrium supersaturation % adjacent to the small droplet greater than it is adjacent to the large droplet? 𝐹 = −𝐷 ∆𝑟 ∆𝑥 Ross 2013 Stull 2015
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5 Ice crystal nucleation Ross 2013 Stull 2015
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6 Bergeron-Findeisen process or ice crystal process or cold cloud process Stull 2015
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7 Cloud droplets vs. raindrops Terminal velocity Ross 2013
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8 Growth by collision &
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