Abstract
Future global warming has close relationship with abatement potential of six greenhouse gases (GHGs), including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6). Therefore, multiple gas reduction flexibility should be assessed. The emission of each non-CO2 GHG is calculated using integrated assessment model GRAPE (Global Relationship Assessment to Protect the Environment). Multigas reduction potential is assessed under the long-term atmospheric temperature target. The implications on gas life as well as abatement timing uncertainty in terms of cost, and technological availability are discussed in the chapter. Introduction of additional multigas reduction will cut economic burden under the same climate targets. The conclusions are two-fold; additional multigas mitigation is the cost effective strategy compared to the activity only mitigation under the same climate target conditions; and there is great uncertainty in non-CO2 GHG assessment.
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