Overview

Types of Greenhouse Gases

Greenhouse gases are the collective term for gases that contribute to rising global temperatures. Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases (HFCs, PFCs, SF6, etc.) are known as the main types. Each gas is evaluated for its warming impact by the Global Warming Potential (GWP), and they differ in atmospheric lifetime and emission sources. In the International Framework for Climate Change, the IPCC has positioned the reduction of these gas emissions as an important issue.

greenhouse gases global warming carbon dioxide methane nitrous oxide fluorinated gases GWP environment climate change

code	slug	name	description	atmosphericLifetime	emissionShare	formula	gwp100	mainSources
CO2	carbon-dioxide	Carbon Dioxide	The most significant greenhouse gas, accounting for approximately 75% of anthropogenic emissions.	数百〜数千年	約75%	CO₂	1	["Fossil fuel combustion","Cement production","Deforestation"]
CH4	methane	Methane	Has approximately 28 times the warming potential of CO₂, accounting for about 18% of anthropogenic emissions.	約12年	約18%	CH₄	27.9	["Agriculture (rice, livestock)","Natural gas extraction","Waste landfills"]
N2O	nitrous-oxide	Nitrous Oxide	Also called laughing gas, with approximately 273 times the warming potential of CO₂.	約109年	約4%	N₂O	273	["Nitrogen fertilizer use","Industrial processes","Fuel combustion"]
HFC	hydrofluorocarbons	Hydrofluorocarbons	Fluorinated gases used in refrigerants with hundreds to thousands of times the warming potential.	数年〜数十年	約1%	HFCs	675	["Refrigerants for refrigerators and AC","Spray cans","Foaming agents"]
PFC	perfluorocarbons	Perfluorocarbons	Used in semiconductor manufacturing, extremely long-lived and potent greenhouse gases.	数千年	0.5%未満	PFCs	6500	["Semiconductor manufacturing","Aluminum smelting"]
SF6	sulfur-hexafluoride	Sulfur Hexafluoride	One of the most potent greenhouse gases, with approximately 24,000 times the warming effect of CO₂.	850〜1,280年	0.1%未満	SF₆	24300	["High-voltage electrical equipment insulation","Semiconductor manufacturing"]
NF3	nitrogen-trifluoride	Nitrogen Trifluoride	Used in semiconductor and LCD manufacturing, with approximately 17,000 times the warming potential of CO₂.	長い（数百年以上）	0.1%未満	NF₃	17200	["Semiconductor manufacturing","LCD panel manufacturing"]

The main types and characteristics of greenhouse gases that cause global warming.