Presentation on theme: "OCEAN CURRENTS AND CLIMATE Ocean current - permanent or semi-permanent horizontal movement of surface water (the top 100m). Caused by: prevailing winds."— Presentation transcript:
OCEAN CURRENTS AND CLIMATE Ocean current - permanent or semi-permanent horizontal movement of surface water (the top 100m). Caused by: prevailing winds size and shape of ocean body they develop in (Gulf Stream) temperature and density of water coriolis force Complete questions # 27, 28, 29 and 30 on page 69.
Major World Ocean Currents
Affect of cold ocean currents: Cools the summer temperature. Reduces precipitation - cooler air holds less moisture. Affect of warm ocean currents: Warms the winter temperature. Increases precipitation - warmer air holds more moisture.
Practical Examples – How is each location affected by ocean currents? Cool summer temperatures Surprising little precipitation despite being a coastal area
Warm moist air brings high precipitation
Explain why Cape Town, South Africa might have similar fog conditions as St. John’s NF? Warm and cold currents meet – the warm air rises above and condenses into fog.
Australia has a fair amount of desert. Which coast would you expect it to be on, east or west? West – colder ocean current – colder air – less precipitation.