Changes in concentration of atmospheric carbon dioxide, other greenhouse gases, and aerosols
The Atmosphere: Getting a Handle on Carbon Dioxide – Climate Change: Vital Signs of the Planet
Atmospheric concentrations - Our World in Data
10,000 Years of Carbon Dioxide - Berkeley Earth
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
CO2 Concentration in the Atmosphere Highest Ever at 419
7. Is the current level of atmospheric CO2 concentration unprecedented in Earth's history? Answer | Royal Society
Carbon dioxide in Earth's atmosphere - Wikipedia
Temperature Change vs. Carbon Dioxide Concentration - Berkeley Earth
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
Atmospheric CO2 May Have Topped 400 PPM Permanently - Inside Climate News
Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
Changes in concentration of atmospheric carbon dioxide, other greenhouse gases, and aerosols
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
The Keeling Curve
Global monthly gridded atmospheric carbon dioxide concentrations under the historical and future scenarios | Scientific Data
Met Office: Atmospheric CO2 now hitting 50% higher than pre-industrial levels - Carbon Brief
File:Carbon Dioxide 800kyr.svg - Wikimedia Commons
Graphic: The relentless rise of carbon dioxide – Climate Change: Vital Signs of the Planet
USGCRP Indicator Details | GlobalChange.gov
How reliable are CO2 measurements?
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
File:Atmospheric carbon dioxide concentrations and global annual average temperatures over the years 1880 to 2009.png - Wikimedia Commons
