The phrase "average temperature from" is correct and usable in written English.
It can be used when discussing data or statistics related to temperature over a specific period or from a particular source.
Example: "The average temperature from the last decade shows a significant increase compared to previous years."
Alternatives: "mean temperature from" or "typical temperature from".
The "two degrees" refers to the Copenhagen target of keeping the Earth's average temperature from rising 2C (3.6 F) above the levels that existed before nations began industrialising in the late 18th century.
Though the vast majority of countries in the world have clear goals in the form of nationally determined contributions (NDCs), these are not action plans, nor are the NDCs strong enough to actually keep global average temperature from rising more than 2C.
This period was nearly 0.7˚C warmer than the average temperature from 1951 to 1980.
The small particles, or aerosols, were spewed high into the atmosphere and scattered sunlight back into space, preventing the global average temperature from rising from 0.05°C to 0.12°C.
A slight elevation of average temperature from 2.0 to 2.2 °C in Cameron Highlands has been determined for the past 33 years to be associated with deforestation and land clearing (Barrow et al. 2009; Gasim et al. 2010).
Reached in December, the agreement aims to keep the global average temperature from rising more than 2 degrees Celsius above pre-industrial levels — and ideally, to keep the increase under 1.5 degrees Celsius.
As a bloc, these countries have been lobbying for an international agreement to keep average temperatures from rising beyond 1.5 degrees Celsius — or 2.7 degrees Fahrenheit.
After a chilly start to 2012, average temperatures from January to October were 0.45 degrees Celsius, or 0.81 degrees Fahrenheit, above the average from 1961 to 1990, according to the World Meteorological Organization's findings.
The big oil companies, including US firms such as Exxon Mobil and Chevron, have been warned that they are presiding over "stranded assets" of carbon that can never be burned if the world is determined to keep average temperatures from rising no more than 2C (3.6F) above pre-industrial levels.
