Local Weather Effects ASTR /GEOL 1070.

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Presentation transcript:

Local Weather Effects ASTR /GEOL 1070

Land and Sea Breezes Land heats up faster than water Afternoon breeze from sea Land cools off faster than water Night-time breeze from land

Katabatic Winds Air masses cool over cold land Cold, dense air flows down, outward Brr!

Steam Fog Warmer water under colder air Moisture rises, condenses

Lake-Effect Precipitation Warmer water under colder air Large enough body to make a cloud More precipitation downwind of water

Valley Fog Downslope night breeze trapped in valley Air below dew point

Radiation Fog Ground cools by radiation at night Especially effective when: Ground is snow-covered Air is still No cloud cover

Gap Wind Wind flows over a mountain range Fastest through gaps