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Gravity Air resistance
Solute Effect Pure Water: High Vapor pressure Small rain drop Salty Water: Low Vapor pressure Large rain drop
Table 7-1, p. 166
Bergeron Process (ice-crystal process) Ice grows at the expense of water drops.
Accretion (riming) Ice collecting suppercooled water drops Results in icy snow pellets called graupel
Aggregation Ice collecting small ice particles to make a snow flake
Fall Streaks -- icy crystals or snow falling
Dendrite snow crystal
Fig. 7-11, p. 172
Fig. 7-12, p. 173
Rime: super cooled drop freezing on contact
Freezing Rain: rain freezes on contact.
Fig. 7-21, p. 180
Fig. 7-23, p. 182 Days with Freezing rain
Fig. 5, p. 183
Fig. 7-18, p. 179
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Most collide on forward edge Some collide on backside About a million average sized droplets would be required to produce a raindrop! Terminal velocity:
1. Clouds are made up of: A.Liquid water droplets B.Ice Crystals C.Water Vapor D.A combination of liquid water, ice, and water vapor.
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Lecture 13: Precipitation W & H: Sections 6.4 and 6.5.
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Part 2. Water in the Atmosphere Chapter 7 Precipitation Processes.
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Chapter 8: Precipitation ATS 572. “Precipitation” Can be: 1.Rain 2.Snow 3.Hail 4.Etc. However, it MUST reach the ground. –Otherwise, it is called “virga”—hydrometeors.
ATS 351 Lab 7 Precipitation March 7, Droplet Growth by Collision and Coalescence Growth by condensation alone takes too long Occurs in clouds with.
Precipitation is any type of water that forms in the Earth's atmosphere and then drops onto the surface of the Earth.
Why does it rain on us???. 3 cloud properties, 9 ISCCP cloud types Why do clouds constitute a wildcard for climate change? Competition between greenhouse.
Precipitation Chapter 8 Section 2. Standard S 6.4.e Students know differences in pressure, heat, air movement, and humidity result in changes in weather.
CHAPTER 6 PRECIPITATION EXTREMES CHAPTER 6 PRECIPITATION EXTREMES.
When water vapor in the air becomes liquid water or ice crystals. How do clouds form?
Precipitation and Intro to Radar ATS 351 Lecture 7 October 19, 2009.
Cloud Microphysics Liz Page NWS/COMET Hydromet February 2000.
NATS 101 Section 13: Lecture 13 Precipitation. Precipitation: Any form of water particles—liquid or solid—that falls from the atmosphere and reaches the.
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Cloud Development and Precipitation Prof. John Toohey-Morales, CCM St. Thomas University Miami Gardens, Florida.
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AOSC 200 Lesson 4. MOISTURE WATER VAPOR CONSTITUTES ONLY A SMALL FRACTION OF THE ATMOSPHERE. VARIES FROM 0 TO 4 PER CENT HOWEVER WATER IS PROBABLY THE.
THE WATER CYCLE The water cycle — the continuous exchange of water between Earth's surface and atmosphere — is Earth's natural mechanism for recycling.
1 Understanding Weather Weather results from differences in pressure, heat, air movement, and humidity.
Precipitation Formation How can precipitation form from tiny cloud drops? 1.Warm rain process 2.The Bergeron (ice crystal) process 3.Ice multiplication.
Precipitation Precipitation is any form of water that falls from clouds that reaches Earth’s surface.
Hydrologic Cycle. Water Cycle The movement of water from the Earth’s surface into the air and back to the surface again
Chapter 7 Precipitation Processes Chapter 7 Precipitation Processes.
Clouds Identify cloud types from photos Recognize and define prefixes and suffixes for cloud types Associate general weather conditions with cloud types.
Chapter 5: Cloud development and precipitation Atmospheric Stability Atmospheric Stability Determining stability Determining stability Cloud development.
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