Question of the Day Question: How are weather and climate different? (take your best guess!) Answer: … … … More than 25 types of elements Turn In Now: Air Pressure & Wind WS (blue) Pressure, Humidity, & Clouds WS (white)
Weather, Climate and Hadley Cells
What is weather? Weather is the temperature, humidity, atmospheric pressure, wind, and precipitation in a particular area on a particular day. Almost all weather occurs in the troposphere. (That’s where all the atmospheric water is located.)
What is climate? Climate is an average of the weather conditions at a particular place over a long period of time. Climate is the long-term predictable state of the atmosphere.
Hadley, Ferrel and Polar Cells Patterns of circulation in the atmosphere that distribute heat on the surface of the Earth.
90O North 60O North 30O North 0O Equator 30O South 60O South 90O South Easterlies Westerlies 30O North Trade Winds 0O Equator Trade Winds 30O South Westerlies Easterlies 60O South 90O South
Tropical (Tropical Wet, Humid Subtropical) – Warm & humid climate; near 0O Deserts (Tropical Dry, Semiarid, Arid) – Hot & dry climate; near 300 Temperate Forests (Cool Summer, Subarctic)– Moderate temperature & humid; near 60O Tundra (Ice) - Cold & dry (frozen desert); near 90O Mediterranean – always on southwest side of continent
Tropical Forest
Desert Landscape
Temperate Forest
Tundra Landscape
Mediterranean Landscape
Rain Shadow Effect Windward side of mountains get more precipitation Wind (contains moisture) Ocean Driest Drier Dry
Typical Nevada Landscape