Measuring Greenhouse Gases in Ice Flashcards

1
Q

Scientists have reported over 160,000 years that ice gives us an answer to knowing concentrations fluctuate. What type of Concentrations are we measuring?

A

Carbon Dioxide and Methane

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2
Q

How many years have Methane and Carbon Dioxide temperatures and atmospheric concentrations been fluctuated?

A

160,000 years

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3
Q

What environmental trait makes Greenland and Antarctica great for drilling Ice cores?

A

Annual layers of snow/ice can accumulate thousands of meters in thickness, each layer containing bubbles of trapped gasses.

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4
Q

How do Researchers measure Greenhouse Gases using Ice?

A
  1. Drill into layers of buried ice, 3. Freeze and Assign Date in Lab, 3. Analyze chemical content
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5
Q

How are Carbon Dioxide concentrations measured?

A

Measured directly from air released as the ice melts. Relative temperature can be inferred by ratios of different oxygen isotopes.

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6
Q

How has the Co2 and CH4 variation changed then to recently?

A

The last 160,000 years show an overall decline in both until recently

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7
Q

What is the process of the Scientific Method?

A
  1. Observe the natural world, 2. Generate a Hypothesis, 3. Decide whether hypothesis is T/F based off existing info, 4. Test Hypothesis with experiment.
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8
Q

When has Atmospheric Carbon Dioxide started to increase in parts per million?

A

Figure 5 shows from 1960-2010

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9
Q

What is the primary human activity that produces Carbon Dioxide?

A

Burning fossil fuel (From Industrial Revolution) and destruction of forests

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10
Q

According to the Archives of Nature what is a term used to describe Trees, Soil, and Ice cores?

A

Proxies: Natural features that show evidence of specific climate conditions

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11
Q

The Archives of Society (AOF) refers to sources produced by humans and contain information about the climates. When was the thermometer invented and how is it relevant to the Archives of Society?

A

The thermometer is an instrumentals tool created around 1700. Since its the oldest tool existing we can use this to prove why the AOF is not the most reliable.

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12
Q

What is the Industrial Revolution and how does this link to Greenhouse Gases

A

A time of enormous growth and innovation starting in the late 18th century. Greenhouse Gasses (such as Co2) begun to rise in production around this time.

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13
Q

What Literature Piece was created in the context of the Industrial Revelation and what does the author suggest about it?

A

“The World Is Too Much With Us” (1807) by William Wordsworth (1770-1850). He suggest that people have become consumed with material goods and no longer recognize beauty of inherent in nature.

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14
Q

During the Industrial Revolution in the 19th century what kind of factories were invented that later caused a bulk of the Greenhouse Gas emissions?

A

Coal-Powered Factories

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15
Q

What countries became the world’s leading emitters of greenhouse gasses?

A

China, US, EU, India, and Russia

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16
Q

What is the Paris Agreement?

A

A 2015 agreement following the guidelines from the IPCC, that’s goal is to limit the increase in global temperature.

17
Q

How many parties adapted the Paris Agreement?

A

196 parties

18
Q

How much does global average temperatures increase need to be limited to achieve the Paris Agreement’s goal?

A

The Paris Agreement wants to limit 2 degree C above pre-industrial levels. Global Leaders say we need to limit the increase to 1.5 degrees C by the end of the century.

19
Q

What is the downside to the Paris Agreement?

A

According to Donald Trump, following the Paris Agreement puts the US at an Economic Disadvantage.

20
Q

What are the Estimated Residence Times for Carbon Dioxide and Methane

A

Co2 is 100 years and CH4 is 11.8 years