Climate Change Flashcards

1
Q

greenhouse effect

A

water vapor, carbon dioxide, methane, and more act as a transparent blanket in the atmosphere

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2
Q

what area is experiencing the most warming?

A

the arctic

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3
Q

how much has global average sea level risen since 1880?

A

8-9 inches

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4
Q

why is the melting of permafrost a huge concern?

A

it could release vast amounts of CO2 and methane, as well as viruses, bacteria, and fungi

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5
Q

how much earlier is the first leaf-out in the spring?

A

5 days earlier

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6
Q

species ranges are moving towards the __________

A

poles or equator

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7
Q

oceans absorb CO2 and a compound forms that makes the water more acidic

A

carbonic acid

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8
Q

what does carbonic acid do?

A

it can steal carbonate from the shells of marine organisms

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9
Q

what is causing the warming?

A

increase in carbon dioxide in the atmosphere

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10
Q

In 1895, Svante Arrhenius predicted what?

A

a 40% increase or decrease in CO2 might cause the glacial retreats or advances of the ice ages

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11
Q

in 1938, G.S. Callendar predicted what?

A

a doubling in atmospheric CO2 would produce an increase in mean global temp of 2 degrees

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12
Q

What were global fossil fuel CO2 emissions in 2022?

A

37.5 GT

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13
Q

what are the three countries with the highest emissions?

A

China, U.S., India

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14
Q

What country has the most cumulative CO2 emissions?

A

US

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15
Q

We know that CO2 and methane block radiation in certain wavelengths, so if green house gasses are causing global warming…

A

the energy escaping the atmosphere into space should be reduced at the wavelengths of CO2 and methane

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16
Q

what is the heat bouncing back from the atmosphere called?

A

longwave radiation - significant increases found across the world

17
Q

what is the emissions gap?

A

the difference between those necessary emissions levels, and the levels that current promises will yield - 12 GT of carbon per year

18
Q

sea level projections?

A

sea levels are projected to increase between 2.5 and 4.5 feet by 2100

19
Q

5 Climate change myths

A
  • CO2 has little or no effect
  • climate has changed before
  • its the sun
  • there’s no consensus
  • the models are wrong
20
Q

argument to “CO2 has little to no effect”

A
  • there is laboratory proof that CO2 is a greenhouse gas
  • there is an incredible correlation between CO2 levels and temperature over the last 800,000 years
21
Q

Dr. Richard Alley calls CO2…

A

the biggest control knob for climate

22
Q

reconstruction studies estimate pre-historic temps based on…

A

ice cores, tree rings, sediment cores

23
Q

global temperature is warmer now than it has been in the last…

A

1000 years

24
Q

what is the correlation between earth temp and sun output over the last 40 years?

A

no correlation

25
Q

what percentage of scientists agree on climate change?

A

about 97%

26
Q

the US does national climate assessments every ____ years, includes ____ federal agencies

A

5 years, 13 federal agencies

27
Q

what is the IPCC?

A

inter-governmental panel on climate change

28
Q

what is the most authoritative source for climate science?

A

the inter-governmental panel on climate change (IPCC)

29
Q

what is the argument against “the models are wrong”?

A

prediction models have been accurate

30
Q

what is the argument against “the climate has changed before”?

A

it is changing faster and more, its hotter now than it has been in 1000 years

31
Q

what is the argument against “its the sun”?

A

there’s no correlation between the earth’s temp and sun output in the last 40 years

32
Q

whats the argument against “there’s no consensus”?

A

in 2005, several national academies issued a joint statement affirming the mainstream climate change story, the IPCC issues reports that are authored by hundreds of ppl from many nations

33
Q
A