An atmosphere is a gaseous envelope that surrounds a material of sufficient mass and is held in place by gravity.
When discussing climate change or environmental issues, it is implicit that we are referring to the Earth’s atmosphere.
On our planet, about 78.1% of the dry atmosphere is made up of nitrogen and around 20.9% consists of oxygen.
The remaining 1% consists of trace gases such as argon (0.93%), helium, and several greenhouse gases including carbon dioxide (0.035%).
Moreover, the atmosphere also contains water vapour, clouds, and aerosols along with some particulate matter.
The main layers are:
- Ozone Layer
- Homosphere and Heterosphere
- Planetary Boundary Layer
In order to help stop climate change, we must reduce the number of greenhouse gases we emit into the atmosphere.« Back to Glossary Index