In news: Recently, Mauna Loa Observatory recorded Earth's atmospheric concentration of carbon dioxide (CO2) passing 415 parts per million (ppm) for the first time since before the ancient dawn of humanity.

Carbon dioxide in the atmosphere: 

  •  Carbon dioxide pumped into the atmosphere by fossil fuel burning and other human activities, is the most significant greenhouse gas (GHG) contributing to climate change.  
  • The rate of increase has accelerated since the measurements started, from about 0.7 ppm per year in the late 1950s to 2.1 ppm per year during the last 10 years.
  • The evidence is conclusive that the strong growth of global CO2 emissions from the burning of coal, oil, and natural gas is driving the acceleration.

The Mauna Loa Observatory (MLO) is an atmospheric baseline station on Mauna Loa, on the island of Hawaii, located in the U.S. state of Hawaii.It is the oldest continuous carbon dioxide (CO2) measurement station in the world.


Increase in Atmospheric Carbon Dioxide

Image Source: NOAA