GEO 211 1st Edition Lecture 14 Outline of Last Lecture I. Chapter 5- CondensationA. Fog is formed by:1. Cooling2. EvaporationB. Formed by cooling (3 types)1. Radiation fog- formed by radiational cooling on clear calm nights (also called ground fog)- Valley fog2. Advection fog3. Upslope fogC. Formed by evaporation1. Steam fog2. Frontal (precipitation) fogOutline of Current Lecture II. Cloud classification (based on form and height)A. Latin Words used in the classification:1. Stratus2. Cumulus3. Cirrus4. Alto5. NimbusB. Height of cloudsC. 10 common cloud types (4 groups) table 5.2- High clouds1. Cirrus (Ci) 2. Cirrocumulus (Cc) 3. Cirrostratus (Cs) - Middle clouds1. Altocumulus (Ac) 2. Altostratus (As) \These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Low clouds1. Stratus (St) 2. Stratocumulus (Sc) 3. Nimbostratus (Ns) Current LectureII. Cloud classification (based on form and height)A. Latin Words used in the classification:1. Stratus- layered, sheets, etc.2. Cumulus- puffed up, puffy, piled up3. Cirrus- thin, fibrous4. Alto- middle clouds5. Nimbus- rain cloudB. Height of clouds- High: 16,000-43,000 feet- Medium: 6,500-23,000 feet- Low: 0-6,500 feetC. 10 common cloud types (4 groups) table 5.2- High clouds1. Cirrus (Ci) - thin, wispy, fibrous clouds, made with ice crystals (figure 5.12), sometimes appear as hooked filaments called “mares’ tails” 2. Cirrocumulus (Cc) – thin, high clouds with small puffed masses, made with ice crystals (figure 5.13), appear as ripples or waves, may produce “mackerel sky”- wavelike appearance like scales of fish 3. Cirrostratus (Cs) – thin, spread, cirrus clouds with ice crystals, gives sky a milky look, sun/moon readily shines through them (figure 5.14)o Halos- ring of light around the sun/moon- Middle clouds1. Altocumulus (Ac) – puffy, white-gray masses, puffs are larger than cirrocumulus (figure 5.15), sometimes rolled out in parallel waves or bands, have water droplets (NOT crystals) 2. Altostratus (As) – thick, spread out clouds (figure 5.16), sun/moon is dimly visible as a “round disk”, referred to as “watery sun”- Low clouds1. Stratus (St) – low clouds, often covers entire sky (over-cast) (Figure 5.19)2. Stratocumulus (Sc) – low clouds with low, lumpy, rounded masses (Figure 5.18), blue sky is visible between individual cloud elements 3. Nimbostratus (Ns) – dark gray, rain cloud, covers entire sky (over-cast) (figure 5.17), not a lot of
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