PDF-Cloud Droplets and Rain Drops

84 density of 1000 kgm What is the mass in grams of each of the five types of about how many large in mass How long does it take a large cloud droplet to grow into a raindrop and leave Without. cloud. While the drops circulate through areas with different temperatures and humidity levels, they grow on and on in different ice layers. The hailstone freezes and melts alternatively when he move 84 density of 1000 kg/m. What is the mass, in grams, of each of the five types of about how many large in mass. How long does it take a large cloud droplet to grow into a raindrop and leave Without Formation of cloud droplets from supersaturated vapor. Growth of cloud droplets to raindrops in . O. (10 min). Growth of warm cloud droplets. Activated cloud droplets grow by . condensation . then . collection. SOURCE. :. www.geos.ed.ac.uk. /~. dstevens. /...DS_L3_Precipitation_development.ppt. Precipitation development;. Warm and Cold clouds. >0. °. C. <0. °. C. Last lectures from me…. Cloud droplet formation (micro-scales). ATM 419/563. Spring 2017. Fovell. 1. The C-C equation. The . Clausius-Clapeyron. (C-C) . equation reveals how saturation . vapor pressure (. e. s. ) varies . with temperature . T. :. …where . a. 1. Quick review. Drop growth by condensation is modeled as a process of diffusion of water vapor to the surface. The “driving force” is the difference between the vapor pressure of water over the droplet, and the vapor pressure of the environment. Condensation “activates” aerosol particles into drops . . condensation grows liquid droplets (initial stages) . . drop-drop collisions / coalescence create larger drops . . formation of rain in mature clouds (removes water from parcel, disrupts the process). n(D. ). , and fall speeds . v(D. ). , . net . vertical flux of drops (m. -2. s. -1. ). The “threshold diameter” has . v(D. th. ) = . w. . Smaller drops move up, larger ones move down.. The larger that . SO 254 – Spring 2017. LCDR Matt . Burich. How many cloud types can you name?. Take about 3 minutes…groups of 2 or 3. Naming Conventions…by type and altitude. Middle clouds . “alto”. Clouds with vertical development . APPALACHIAN TRAIL. Water Cycle. WATER CYCLE. . EVAPORA-TION. CONDENSA-TION. PRECIPITA-TION. Why is the sky blue?. What Makes Clouds?. Types of Clouds. Cirrus Cloud. High wispy ice clouds-Good weather but can mean a change in the weather. about 1000 m/48 hrs. Thus, they usually evaporate quickly upon leaving the cloud mass. . For it to fall as a raindrop the cloud droplet must get bigger. One raindrop = about 1 million cloud droplets, . Guest lecture by Prof. Kathleen . Schiro. 12 October 2020. Cloud Droplet Formation. Review of how condensation occurs. Curvature effect. Cloud condensation nuclei. Solute effect. 3.3 x 10. 5 . J/kg. 2.5 x 10. : . see pages . 105-106. Relative Humidity. Ratio of moisture in air to moisture in air . if. saturated (VP / SVP) x 100%. Relative to air temperature. Evaporation rate, drying times, forest fire danger, fog formation. :. www.geos.ed.ac.uk. /~. dstevens. /...DS_L3_Precipitation_development.ppt. Precipitation development;. Warm and Cold clouds. >0. °. C. <0. °. C. Last lectures from me…. Cloud droplet formation (micro-scales).