In order, the most abundant greenhouse gases in Earth’s atmosphere are:
Water vapor (H. 2O)
Carbon dioxide (CO.
Nitrous oxide (N. 2O)
Hydrofluorocarbons (incl. HCFCs and HFCs)
What are the three main greenhouse gases and where do they come from?
The major greenhouse gas is of course carbon dioxide (CO2) and nearly all CO2 comes from fossil fuels and land-use change. But methane (CH4) and nitrous oxide (N2O), which mostly come from agriculture and waste, are also significant GHGs and shouldn’t be discounted. This diagram shows GHGs at the global level.
What gas is found in Earth’s atmosphere?
Table 1 lists the eleven most abundant gases found in the Earth’s lower atmosphere by volume. Of the gases listed, nitrogen, oxygen, water vapor, carbon dioxide, methane, nitrous oxide, and ozone are extremely important to the health of the Earth’s biosphere.
What are considered greenhouse gases?
Many greenhouse gases occur naturally in the atmosphere, such as carbon dioxide, methane, water vapor, and nitrous oxide, while others are synthetic. Those that are man-made include the chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs) and Perfluorocarbons (PFCs), as well as sulfur hexafluoride (SF6).