The IS92a emission scenario suggests anthropogenic emissions in2025 equal to the following:
44,700 x 10^9 kg CO2 ; 320 x 10^9 kg CH4 and 22 x 10^9 kg N2O.Weighting these by their global warming potentials, what fractionof the total impact of that year's emissions of these three gaseswould be caused by each gas over the following time periods?
a) 20 years
b) 100 years
c) 500 years