In climate action: constituents of the atmosphere that contribute to the greenhouse effect including, but not limited to, carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride [Section 3(m), Climate Change Act of 2009, as amended by Republic Act No. 10174; Section 1(q), Climate Change Commission Resolution No. 3, Revised Implementing Rules and Regulations (R-IRR) of Republic Act No. 9729, Otherwise Known as the Climate Change Act of 2009, As Amended By Republic Act No. 10174]
In energy and air: those gases that can potentially or can reasonably be expected to induce global warming, which include carbon dioxide, methane, oxides of nitrogen, chlorofluorocarbons, and the like [Section 5(i), Philippine Clean Air Act of 1999]
Note: Note: Under the Climate Change Act of 2009 IRR, the term is written as “Greenhouse Gases (GHG)”. Under the Philippine Clean Air Act of 1999, the term is written as Greenhouse gases only.