Chapter 4 Global Climate and Biomes
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Transcript of Chapter 4 Global Climate and Biomes
Zonal weather pattern is not completely true
The pattern is disrupted by land-sea contrastsMaui, HI San Diego, CA
What warms up quicker: Land or Water?
• Dry Air at room temperature – 1.01 Joules
• Water at 25 C – 4.18 Joules
• Based on these numbers, which warms up quicker? Why?
Ocean Currents
• Ocean currents are driven by:
• Temperature • Gravity• Prevailing winds• Coriolis effect• Locations of
continents
Gyres
• Redistribute heat in the ocean
• Cold polar water along west sides of continents (vice versa east coasts)
http://www.youtube.com/watch?v=J-gqJAsXiKQ
Upwelling
• as the surface currents separate, deeper waters rise and replace the water that has moved away
• Cold H2O nutrient rich
Thermohaline Circulation• Drives mixing of surface
water and deep water
• Crucial for moving heat and nutrients
• Caused by surface waters with high salt content