In climate action: the process by which the absorption of infrared radiation by the atmosphere warms the Earth [Section 3(l), Climate Change Act of 2009, as amended by Republic Act No. 10174; [Section 1(p), 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]
Note: Under the IRR, the term is written as “Greenhouse Effect”.