chapter5gh - Cloud Formation Chapter 5 Forms of...

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1 Chapter 5 Forms of Condensation and Precipitation Classifying and Naming of clouds Processes responsible for various forms of precipitation Cloud Formation visible aggregate of water droplets, ice crystals, or both adiabatic cooling Any Form of Condensation near saturation cloud condensation nuclei Cloud Condensation Nuclei: small surface to condense around abundant in troposphere Dust: Camelback Mnt Pollen Combustion Cloud Condensation Nuclei: hygroscopic nuclei = have a high affinity for water sea salt, and sulfides Salt Spray: breaking waves Relative Humidity <= 100% Cloud Condensation Nuclei: hygrophobic nuclei = repel water oils, Teflon, waxy substances Relative Humidity > 100% Cloud Classification: 1) Form 2) Height PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
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2 Cloud Classification: 3 Basic Forms Cirrus: white, thin, wispy, veil or feather-like Cumulus: globular, cauliflower-like structures Stratus: sheet or layer, uniform coverage Cloud Classification: Height High: above 6000m Middle: 2000 – 6000m Low: below 2000m Clouds of Vertical Development: extend through more than 1 height range 10 Basic Cloud Types: High Clouds: Cirrus: detached white icy filaments, recurved (mares tails) Cirrostratus: whitish veil Cirrocumulus: white patches, small cells, mackerel scales Cirrus Clouds Cirrocumulus Cirrostratus Middle Clouds: Altocumulus: large patches, white rolls, distinct outlines Altostratus: formless layer of grayish clouds, some precipitation PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
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