A shift in long-term average weather patterns.
An increase in the average temperature of Earth's surface and lower atmosphere.
The greenhouse gases (GHGs) in the atmosphere that allow solar radiation to pass through to the Earth's surface where it is absorbed.
Enhanced Greenhouse Effect
Concentrations of GHGs increase above normal levels, more heat is trapped. This results in increased average global temperatures.
Carbon Dioxide Equivalent
The warming potential of methane is equated to an amount of CO2 that would trap an equivalent amount of heat, and is measured in tonnes (or kilotonnes) of carbon dioxide equivalent or CO2eq.
Store carbon for long periods.
A layer of ozone (O3) located about 24 km up in the atmosphere.
Permanently frozen subsoil layer up to 1400 m thick beneath almost 25% of the northern hemisphere.
A shift in the ocean currents, temperature, and atmospheric conditions in the tropical southern Pacific Ocean.
A region between the warm top and cold deep layers of the ocean.
A shift to colder-than-average ocean temperaturesin the eastern Pacific Ocean.