Show: OLLI 2019, Climate Change in High Latitudes and Oceanic Regions[6]
Presented: NC State University
Raleigh, North Carolina, 2019/04/02
Abstract
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Description
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Note
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:Climate Change from the Marine Perspective | 2 |
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Climate Change Themes Discussed Today |
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There is Some Urgency in Taking Action to Limit Green House Gas Emissions | 4 |
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The Ice Core Record: (A geological Time Perspective of Atmospheric CO2) |
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Glacial-IInterglacial Temperature changes correspond to ~4 degrees C in global temperature change. | 6 |
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Atmospheric CO2 Levels over Geologic Time |
| 7 |
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Natural versus Anthropogenic changes in carbon dioxide content of the armosphere | 8 |
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Ice Age glacial extent 18,000 years ago. |
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How Well Do We Understand the Process Causing Climate Change? | 10 |
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How Have Global Temperatures Varied Over the Past 100 to 1000 years? |
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Has it been statistically warmer over the past 40 years? | 12 |
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Over the past 40 years certainly warmer and likely more extreme precipitation as well! |
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Why Do Scientist Believe that Humankind has Contributed to Global Warning? | 14 |
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So how did we get into this carbon mess that is driving all of the global warming? |
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Global Fossil CO2 Emissions: The Past 30 Years! | 16 |
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Fate of anthropogenic CO2 emissions (2008-2017) |
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Global Carbon Budget: Sources and Sinks | 18 |
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Global Carbon Budget 1870 to 2017 |
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Total global emissions by source | 20 |
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Uptake of CO2 by Ocean comes at a cost: Ocean Acidification |
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The causes of Ocean Acidification and Global Climate Change are the same! | 22 |
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Ocean Acidification makes it much harder for these CaCO3 biota to make their hard parts |
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Predicted Temperature Changes from Doubling Atmospheric CO2 Levels | 24 |
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Arctic Sea Ice is Melting Faster than the Global Warming Models Predict!!! |
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In Addition to Sea Ice Melting, Some of the Polar Ice Caps Are Beginning to Show Signs of Melting | 26 |
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Scientists are making detailed measurements of continental ice sheet volumes. |
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Bottom Water Formation Occurs in Areas of Sea Ice Formation | 28 |
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Is Ther Any Evidence That Bottom Water Formation and Climate Change May be Correlated? |
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Another Serious Ramification of Global Warming is Sea Level Rise! | 30 |
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What Happens to Sea Level if Greenland and Antarctic Ice Sheets Melt? |
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In the Antarctic (90% of the World"s Ice), What Ice Sheet is the Most Vulnerable to Global Warming? | 32 |
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Recent Breakup of Antarctic Ice Shelves |
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Why is the Breakup of Antarctic Ice Shelves Such a Big Concern? | 34 |
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DR. D"s Research |
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Fiction versus Reality: Larsen Ice Shelf - July 12th, 2017 Calving Event | 36 |
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Antarctic Ecosystem Research Following Ice Shelf Collapse and Iceberg Calving Events |
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Other Evidence of Climate Change Here in the Carolinas! | 38 |
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How Sensitive Are We Here in North Carolina to Sea Level Rise? -- Very High! |
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Societal Implications of Global Warming - Is there Urgency? -- Yes!!!! | 40 |
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The Paris Agreement |
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The Paris Agreement - continued | 42 |
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The Paris Agreement: What People Want |
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The Paris Agreement: Limitations | 44 |
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On What Grounds Can the Current Administration Pull Out of the Paris Agreement? |
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Historical cumulative fossil CO2 emissions by country | 46 |
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How to Build a Habitable Planet, by Wallace S.Broecker |
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What Can We Do To Counteract Global Warming and Ocean Acidification | 48 |
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These High-Latitude Ecosystems Are Quite Fragile - But They Accommodate Some of the Most Spectacular Fauna on the Planet |