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Rain

Rain. Types. 3 Types of Rainfall generally hit Western Canada Orographic Convectional Frontal. Orographic. AKA Mountain Precipitation Westerly winds pick up moisture from the ocean Wind carries that heavy air up the mountains It then cools and falls back down as rain. Convectional.

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Rain

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  1. Rain

  2. Types • 3 Types of Rainfall generally hit Western Canada • Orographic • Convectional • Frontal

  3. Orographic • AKA Mountain Precipitation • Westerly winds pick up moisture from the ocean • Wind carries that heavy air up the mountains • It then cools and falls back down as rain

  4. Convectional • Happens most often on the Prairies and the Shield • Warm air heats the ground pulling moisture out of the ground • Warm air rises, meets cold air up top • Falls down as rain • Often leads to thunderstorms

  5. Frontal • When hot air from the Gulf of Mexico meets cold air from the arctic • We call these “Fronts” • The warm front rises above the cold front • Causes moisture in the warm front to condense and fall down as rain

  6. Assignment • Draw the 3 different types of rainfall we encounter here in Western Canada • Page 106-107 have examples • Make sure you label them • Do NOT hand in yet. Submit at the end of the Unit

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