PPT-Lesson 2 Precipitation and Clouds

Chapter 7 Weather and Climate Objectives Explore how the water cycle drives weather Discuss the conditions that favor thunderstorms and tornadoes Main Idea Water vapor and changes in temperature are important factors in cloud formation and in precipitation. Robert Wood. University of Washington. Radiative. “forcing” components. Cloud effects. Direct . Twomey. Mixed ph.. Semi-dir 2. nd. AIE. t. cld. .  . N. d. rainrate. increases. Kubar. , T., D. L. Hartmann, and R. Wood, 2009: Understanding the importance of microphysics . and macrophysics . for warm rain in marine low clouds: Part I. Satellite observations. . and . Sky Conditions. S4E3. Students will differentiate between the states of water and how they relate to the water cycle and weather.. e. Investigate different forms of precipitation and sky conditions (rain, snow, sleet, hail, clouds, and fog).. The SOCRATES Planning . Team. : . Greg . McFarquhar. (. mcfarq@atmos.uiuc.edu. ),. Roj. . Marchand. , . Robert . Wood, Chris . Bretherton. , Alain . Protat. , Patricia Quinn, Steven . Siems. , Simon Alexander, and Bob Weller. ACE is presently in pre-formulation and will be realized in some form in the early to mid . ’. 20s. . ACE is a response to the . The extreme sensitivity of the climate system to hydrological processes especially clouds and precipitation. Water is ALWAYS in the atmosphere!. Earth’s water is mostly found in the oceans, but it is also found in lakes, rivers, ice sheets, in plants, and underground.. It can be present as a solid (like snow), liquid (rain), or gas (water vapor). . Weather Forecast. By: Mustafa Azam. Weather Tools Used. Barometer- Shows atmospheric pressure.. Wind Vane- Shows wind direction. Rain Gauge- Shows the amount of precipitation during a storm.. Weather Journal. 23-2. Clouds. Small water droplets or ice crystals that fall through air. Fog is a cloud that forms near the surface. Formation. Solid surface are needed for water vapor to condense on. Troposphere – lower layer of atmosphere. Deliberate Cloud Seeding. Cloud Seeding. Deliberate cloud seeding, with the goal of increasing precipitation by the injection of specific types of particles into clouds, has been pursued for over 60 years. . Crown King. May Average: 0.30”. June Average: 0.26”. July Average: 3.44”. August. . Average: . 3.34”. Crown King 2016 . (. 86. % . of . average. ). May: 1.20”. June: 0.36”. July: 1.60”. Water vapor, droplets of water suspended in the air, builds up in the Earth's atmosphere. . Water vapor in the atmosphere is visible as clouds and fog. . Water vapor collects with other materials, such as dust, in clouds. Precipitation condenses, or forms, around these tiny pieces of material, called cloud condensation nuclei (CCN).. Artificial rain making.. Process of Precipitation:. Precipitation is caused by condensation of water . vapours. of the air mass. . The ascending air mass with sufficient amount of water . vapours. becomes saturated due to adiabatic cooling. Condensation of water . . Can you identify . cloud types in landscape paintings? . Directions. : Take a look at each piece of art and try to identify the clouds. The following slide has the answer. Good luck!. Title. : Route de Louveciennes. Clouds. Form when air rises, cools to its dew point, and becomes saturated. Shape and height of clouds vary with temperature, pressure, and water vapor in atmosphere. Clouds. Shape. Stratus-smooth, even sheets or layers at low altitudes.