4 3 . 2 Clouds.

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Presentation transcript:

4 3 . 2 Clouds

CLOUDS Cumulus Stratus form in rising air currents and indicate unstable air Stratus form in horizontal layers and indicate stable air

Families: Height of Bases: LOW (STRATO) surface - 6,500ft MIDDLE (ALTO) 6,500ft - 23,000ft HIGH (CIRRO) 16,500ft - 45,000ft VERTICAL 1,500ft - above DEVELOPMENT

HIGH CLOUDS

CIRRUS (CI) Thin delicate wisps

CIRRO-CUMULUS (CC) Thin cottonball like

CIRRO-STRATUS (CS) Thin high sheet Produces “Halo” effect Often indicates the approach of a warm front

MIDDLE CLOUDS

ALTOCUMULUS (AC) Layers of rounded masses of cloud

ALTOSTRATUS (AS) Thick grey clouds that often cover the entire sky May give some light rain or snow

ALTOCUMULUS CASTELLANUS (ACC) Altocumulus with turrets

NOTE: You must use the buttons in the Confirmation Stage

Meteorology Clouds Let's try a few review questions on Meteorology: Question #1 - What is the height of middle clouds? A 1,500-6500 feet B 6,500-23,000 feet C 16,500-45,000 feet D 23,000-45,000 feet

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Meteorology Clouds Let's try a few review questions on Meteorology: Question #2 - What type of cloud produces a halo effect? A Altostratus B Altocumulus Castellanus C Cirrostratus D Cirrocumulus

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LOW CLOUDS

STRATUS (ST) A uniform layer, like fog, but not resting on the ground Drizzle often falls from stratus

STRATUS FRACTUS (SF) Pieces of Stratus

STRATOCUMULUS (SC) A thin layer of rounded masses of cloud

NIMBOSTRATUS (NS) A low layer of uniform, dark grey cloud

CLOUDS OF VERTICAL DEVELOPMENT

CUMULUS (CU) Thick Rounded and lumpy Resemble cotton balls

Cumulus Fractus (CF) Broken Cumulus

TOWERING CUMULUS (TCU) Cumulus that builds up into high towering masses Rough air underneath Heavy icing in cloud

CUMULONIMBUS (CB) Heavy masses of cumulus Anvil top Violent vertical currents CB clouds should be avoided by all aircraft

Clouds of Vertical Development bases as low as 1,500 feet composed of: water droplets supercooled water droplets ice crystals.

NOTE: You must use the buttons in the Confirmation Stage

Meteorology Clouds Let's try a few review questions on Meteorology: Question #3 - What are clouds of vertical development composed of? A Water droplets B Ice crystals C Supercooled water droplets D All the above

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Meteorology Clouds Let's try a few review questions on Meteorology: Question #4 - What cloud is thick gray and often covers the entire sky? A Altostratus B Cirrus C Altocumulus D Cirrostratus

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Meteorology Clouds Congratulations!! You have now completed the Clouds lesson of the Meteorology Module. Of course, this lesson is always available to you for future reference if required. You are now ready to move along to the next Meteorology lesson you have not completed or to any other module you wish. You can advance to the Self Test Module if you feel ready to challenge the final exam. Good Luck!