NATURAL CAUSES OF CLIMATE CHANGE

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Presentation transcript:

NATURAL CAUSES OF CLIMATE CHANGE

1/18/2019

VOLCANOES Lava type= Emit CO2; warms- long term (need a lot!) Ash type= emit SO2- blocks heat- cools- short term

Milankovitch cycles Astronomical changes can alter earth’s climate Tilt and orbit variations

Sunspots More sunspots Cause solar storms Make earth hotter

Impact events When a space rock hits Earth, how will it change the climate? 1/18/2019

The debate Are humans causing global warming? 1/18/2019

The de 1/18/2019

1/18/2019

The Debate https://youtu.be/TMNtd29OF6A NASA graphs https://youtu.be/OWXoRSIxyIU Debate 1/18/2019

Global warming can cause global cooling?

Current state of glaciers

Glacier national Park, Montana 1938 vs. 2005

Alaska 1917 vs. 2005

Greenland notice 2002-3

Carbon footprint Your impact on GHGs. Extra credit!!

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