What are the 4 main greenhouse gases?

The table below presents values for these two characteristics for major greenhouse gases. The GWP and ... for each gas. These values are from the Fourth IPCC Assessment Report (AR4) released in 2007, which are commonly used in international reporting, despite the Fifth Assessment Report updating them in 2014. read more

Two characteristics of atmospheric gases determine the strength of their greenhouse effect. The first is the Global Warming Potential (GWP), a measure of the radiative effect of each unit of gas over a specified period of time, expressed relative to the radiative effect of carbon dioxide (CO 2). read more

In general, fluorinated gases are the most potent and longest lasting type of greenhouse gases emitted by human activities. There are four main categories of fluorinated gases — hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF 6), and nitrogen trifluoride (NF 3). read more

A greenhouse gas (often abbreviated as GHG) is a gas that both absorbs and emits radiation in the infrared range, commonly called thermal radiation or heat. When present in the atmosphere, these gases trap radiation in the form of heat, causing a warming process called the greenhouse effect. read more