This is an incredibly simple climate model. It is based only on CO2 levels but is fun to play with to see very rough effects of different levels of CO2 output on global average temperature. Check here for information on its derivation.


Sensitivity is the increase in temperature in Celcius that you get when you double CO2 levels in the atmosphereSensitivity (2.0 to 4.0):


rcp=2.6RCP stands for 'Relative Concentration Pathways' and are projections for CO2 levels based on various scenarios. rcp=4.5RCP stands for 'Relative Concentration Pathways' and are projections for CO2 levels based on various scenarios.
rcp=6.0RCP stands for 'Relative Concentration Pathways' and are projections for CO2 levels based on various scenarios.
 rcp=8.5RCP stands for 'Relative Concentration Pathways' and are projections for CO2 levels based on various scenarios.
no projection custom

Enter the annual CO2 level growth in ppm that you want to use around each year. I have provided the actual values for 2000 - 2015 for reference. A value greater than 2.6 would mean you think levels will rise faster than they did around 2015. A value of 0 means we are emitting nothing and the Earth is holding the value steady. A negative value means we are actively removing carbon from the atmosphere. Click the update button to update the plots with your numbers.

2000 2005 2010 2015
2020 2025 2030 2035
2040 2045 2050 2055
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