This is the average surface temperature of the whole Earth over a full year. It is based on measurements taken by thousands of weather stations on land and sea.
The Yearly Average Temperature is a crucial metric because the change in the Earth’s average temperature causes major transformations to our planet. It puts the existence of many species – including humans – at risk.
What is the Yearly Average Observed Temperature Anomaly?
It is the difference between the average yearly global surface temperature and its pre-industrial baseline. The pre-industrial baseline is calculated as the average temperature from 1850 to 1900. It is also referred to as the observed warming, and is based on most recent data including natural fluctuations.
The average temperature anomaly is a crucial metric because the change in the Earth’s average temperature is causing major transformations to our planet. It puts the existence of many species – including humans – at risk. Efforts to adapt to the impacts of global warming should consider the impacts with respect to this observed warming.
What is the Rate of Temperature Change?
It is the 30-year moving regression of Earth’s temperature increase or decrease per year. It indicates the speed at which the Earth is warming up (red line) or cooling down (blue line), whereby positive higher values indicate faster warming and negative lower values indicate faster cooling. We use a 30-year moving regression because climate is about long-term weather patterns, typically averaged over 30 years.
The Rate of Temperature Change is a critical metric because it shows how fast global warming is happening.
Indicators of Global Climate Change for Policy Makers
Annually updated, IPCC AR6 consistent indicators of human-induced global warming, greenhouse gas emissions, and the remaining global carbon budget. By IGCC initiative.
800,000 Years Ago To The Present
Global Historical Temperature Record
Info: This graph features a history of global surface temperatures that combine measurements from as far back as 800,000 years up to the present.
Select a greenhouse gas from the graph menu to compare temperature to historical carbon dioxide, methane and nitrous oxide levels.
Current And Historical Global Sea Levels
Global Sea Levels
Info: This graph features global sea level measurements from as far back as 800,000 years up to the present time with an atmospheric temperature overlay option.
Real-Time And Historical CO2 Levels
Atmospheric CO2 Levels
A History of The Planet’s O2 Levels Since 1991
Atmospheric Oxygen Levels
Info: This graph features atmospheric CO2 levels that combine measurements from as far back as 800,000 years up to the present day with an atmospheric temperature overlay option.
Info: This graph displays earth’s atmospheric oxygen levels from 1991 up to the present.
Real-Time And Historical Methane CH4 Levels
Atmospheric CH4 Levels
Present And Historical Nitrous Oxide N2O Levels
Atmospheric N2O Levels
Info: This graph features atmospheric temperature and methane levels, a powerful greehouse gas, that combine measurements from Antarctica ice core data as far back as 800,000 years up to the most recent measurements averaged from a global network of air sampling sites.
Info: This graph features atmospheric nitrous oxide levels and temperature that combine measurements from as far back as 800,000 years up to the present day.