Climate change

Question 1

what is climate change mitigation

Answer 1

refers to the efforts to reduce or prevent the emission of greenhouse gases

Question 2

increased co2 is warming the atmosphere. this then results in…. and a …. atmosphere. what type of feedback is this

Answer 2

higher evaporation rates and a wetter atmosphere. positive feedback- leads to further warming

Question 3

what air temperatures when co2 concentrations rise, how does this affect the ocean

Answer 3

air temperatures rise, oceans then warm up and more vapour evaporates into the atmosphere, amplifies the greenhouse heating

Question 4

explain how lag time affects climate change

Answer 4

the effects of co2 and global warming are delayed by approx 1 year. so when we see the effects we aren’t seeing the immediate ones from the co2 going into the atmosphere now- co2 levels become the cause and effect of further warming

Question 5

melting sea ice in the arctic may turn the area from a carbon sink to a carbon…

Answer 5

source

Question 6

what type of feedback loop is marine phytoplankton and give a brief explanation why

Answer 6

negative. warmer temperatures—> increases in phytoplankton—-> increase in clouds (as they produce DMS which may form condensation)—> global cooling

Question 7

ocean surface water has become how much more acidic due to the increased absorption of co2

Answer 7

26% increase

Question 8

the paris agreement 2015 (political initiatives to help hinder climate change)- how many countries signed up and what is the aim

Answer 8

195 countries adopted the first legally binding climate deal, due to be enforced in 2020.
aim: to limit temperatures to a 1.5oC rise from pre industrial levels
strengthen mitigation abilities
support developing countries to reduce emissions