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Ocean Oceanography of Hawai’i Topics • Winds • Currents • Seawater Chemistry • Tides Topics • Winds • Currents • Seawater Chemistry • Tides Winds Winds The Northeast Trade Winds Insolation Unequal distribution of solar energy Unequal distribution of solar energy Because Earth is curved Unequal distribution of solar energy Because Earth is curved Energy is concentrated at the equator Solar radiation concentrated near equator Solar radiation concentrated near equator Solar radiation concentrated near equator Solar Energy Solar Energy The unequal distribution of solar energy results in regions of Earth that are warmer and regions that are colder Solar Energy The unequal distribution of solar energy results in regions of Earth that are warmer and regions that are colder Warm air expands, becomes less dense, and rises Solar Energy The unequal distribution of solar energy results in regions of Earth that are warmer and regions that are colder Warm air expands, becomes less dense, and rises Low atmospheric pressure Solar Energy The unequal distribution of solar energy results in regions of Earth that are warmer and regions that are colder Warm air expands, becomes less dense, and rises Low atmospheric pressure Cold air contracts, becomes more dense, and sinks Solar Energy The unequal distribution of solar energy results in regions of Earth that are warmer and regions that are colder Warm air expands, becomes less dense, and rises Low atmospheric pressure Cold air contracts, becomes more dense, and sinks High atmospheric pressure Wind Patterns Wind Patterns If Earth did not rotate, the atmosphere would Wind Patterns If Earth did not rotate, the atmosphere would Rise at the equator Wind Patterns If Earth did not rotate, the atmosphere would Rise at the equator Sink at the poles Atmospheric Cells Atmospheric Cells Earth’s rotation results in the formation of three cells in the Northern Hemisphere and three in the Southern Hemisphere Atmospheric Cells Earth’s rotation results in the formation of three cells in the Northern Hemisphere and three in the Southern Hemisphere The atmosphere rises at the equator Atmospheric Cells Earth’s rotation results in the formation of three cells in the Northern Hemisphere and three in the Southern Hemisphere The atmosphere rises at the equator Sinks at 30o Atmospheric Cells Earth’s rotation results in the formation of three cells in the Northern Hemisphere and three in the Southern Hemisphere The atmosphere rises at the equator Sinks at 30o Rises at 60o Atmospheric Cells Earth’s rotation results in the formation of three cells in the Northern Hemisphere and three in the Southern Hemisphere The atmosphere rises at the equator Sinks at 30o Rises at 60o Sinks at 90o Wind Belts Wind Belts Wind belts originate at 30o and 90o Wind Belts Wind belts originate at 30o and 90o Three wind belts form in each hemisphere Wind Belts Wind belts originate at 30o and 90o Three wind belts form in each hemisphere Northeast Trade Winds Wind Belts Wind belts originate at 30o and 90o Three wind belts form in each hemisphere Northeast Trade Winds Westerlies Wind Belts Wind belts originate at 30o and 90o Three wind belts form in each hemisphere Northeast Trade Winds Westerlies Polar Easterlies Regions of Weak Winds Regions of Weak Winds Regions of weak winds form at the equator and 30o Regions of Weak Winds Regions of weak winds form at the equator and 30o The Doldrums form at 0o Regions of Weak Winds Regions of weak winds form at the equator and 30o The Doldrums form at 0o The Horse Latitudes form at 30o Currents Exercise Next Currents Exercise
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