Lec 21 - Mediterranean climate Precipitation and Waterscape...

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4/18/06 Mediterranean climate Precipitation and Waterscape Lecture 21 Mediterranean Climate o Five Mediterranean Climates in the world (Wet Winter, Dry Summer) Mediterranean Basin California Second largest second to the actual Mediterranean Southern Africa Western Australia Central Chile o Global Border Zone Aleutian Low and the Hawaii High Storms forms in the North Pacific These storms carry through the country and gets regenerated on the Atlantic and gets Europe o Pacific’s large mass of water creates these storms o The Shifting Border Storms run into California during winter to create wet winters Hawaiian High becomes smaller and the Aleutian Low comes into California Storms run more north during summer to create dry summers Hawaiian High grows big to push away the storms o The Jet Stream A high air current going westerly created by the spin of the earth Up to 200 mph winds California gets mostly Maritime Influence The clash of low and highs in the North America creates it’s erratic weather and tornados If the Jet Stream is flat, it will be north of California North of the jet scream is cold and south of if is warm Storms run along the jet stream o As the artic warms up, the jet stream does more turns and less predictable The increase of global warming causes for more erratic weather o Maritime Influence Less erratic weather along the ocean as opposed to the heat waves or freezes of the inland California gets the California current from Alaska Creates an upwelling o An upwelling creates the cooler water from the bottom to rise as it changes direction to the west This rise in cool water creates condensation and makes our infamous fog If the interior is heated up, wind sucks the fog in from the pacific through the bay
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Lec 21 - Mediterranean climate Precipitation and Waterscape...

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