Lecture 24- Climate Change

Question 1

increase of CO2 since the beginning of industrial era

Answer 1

40%

Question 2

energy being added to earth

Answer 2

2 watts / meter^2

Question 3

global temperature increase since industrial era

Answer 3

1 C

Question 4

how certain are we that humans are responsible for global warming?

Answer 4

95%

Question 5

how much will sea level rise by the end of the century?

Answer 5

8 feet

Question 6

what causes sea level rise?

Answer 6

• thermal expansion

- melting land ice

Question 7

in a 2c, future generations will have to deal with sea levels of

Answer 7

40-70 feet higher than at present

Question 8

tens of — people at risk

Answer 8

millions

Question 9

tens of — dollars in assets at risk

Answer 9

trillions

Question 10

arctic is expected to be largely ice free by

Answer 10

2035

Question 11

to stay below 2C warming, we must take the global energy system to net zero carbon emission by

Answer 11

midcentury (2050)

Question 12

two big issues at stake in the arctic

Answer 12

• vast oil reserves under the sea floor

- shipping lanes between US East Coast or Western Europe and all of Asia