What does “airborne fraction” with respect to greenhouse gases indicate?
(a) Amount of greenhouse gases that are released into air due to industrial process
(b) Proportion of greenhouse gases in air to all the other atmospheric gases
(c) Proportion of greenhouse gas emission that remain even after a specified time
(d) None of the mentioned
This question was posed to me in a job interview.
I need to ask this question from Greenhouse Gases in section Atmosphere & Greenhouse Gases of Environmental Engineering