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California and Climate Change P. Wall. California Baja California Baja California is a desert.
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Transcript of California and Climate Change P. Wall. California Baja California Baja California is a desert.
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California and Climate Change
P. Wall
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California
Baja California
Baja California is a desert.
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Baja California is part of Mexico.
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The ocean is never far away, yet the land is very dry.
Pacific Ocean
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California
Baja California
Southern California is also very dry.
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Southern California’s Mojave Desert
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Interstate 15 to Las Vegas—through the Mojave Desert
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However, northern California is NOT desert.
Our San Joaquin Valley
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Can you see WHY our San Joaquin Valley is not a desert??
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Here’s why!
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Snowpack in the Sierra Nevada Mountains keeps our valley lush all year!
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California was home to a large number of Native American Indian tribes
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Early settlers to California believed it to be PARADISE!
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As California grows, it’s increasingly difficult to supply enough water for its farms and people.
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So we drill more and more wells.
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As the water table falls, each year we must drill deeper and deeper.
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Before long, the wells go dry.
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Less water = Smaller grain harvests
Now WHAT DO WE DO WITH GRAIN?
There are three main options:
1.Feed people
2.Feed animals (and then eat the animals)
3.Turn it into ethanol for our automobiles
WHICH IS THE MOST EFFICIENT USE OF GRAIN?
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As human move from eating grain to eating animal products, this becomes a less and less efficient use of grain.
This is called “moving up the food chain.”
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How will global warming affect our San Joaquin Valley?
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To begin with, our Sierra Nevada Mountains will receive RAIN instead of SNOW.
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Why is this a problem? Isn’t rain GOOD??
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Rain flows down the mountains IMMEDIATELY, into the Delta, and out into the Pacific Ocean.
There is no time for the water to RECHARGE (replenish) underground water tables.
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It’s much better to have gradual snowmelt. Then we can capture it in reservoirs and recharge the underground
water table, thus assuring a year-round water supply.
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Another consequence of global warming will be rising sea levels.
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Why will rising sea levels be a problem for us in Stockton?
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Weber Point, Stockton
Hint: Do you know the elevation above sea level of Stockton?
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Do you realize that parts of Stockton (e.g. Brookside) are actually BELOW sea level?
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Now please read “The Race to Save Civilization.”
What it describes is ALREADY HAPPENING here in California.
P.S. Here is INFO about California’s disappearing glaciers.