Intro lecture

Question 1

how much warmer than today was the Cambrian explosion?

Answer 1

13/14

Question 2

how much colder than today was the permian glaciation?

Answer 2

-4

Question 3

what was the global mean co2 abundance in 2016?

how much %higher than pre industrial?

Answer 3

403ppm

50% higher than preindustrial co2 concentration of 278ppm

Question 4

who was the first to claim that fossil fuel consumption may result in enhanced global warming and when?

Answer 4

Svante Arrehenius 1896

Question 5

in 2018 how much did us co2 emissions rise by after three years of decline?

Answer 5

3.4%