Recently, the Mauna Loa Observatory in Hawaii
has recorded CO2 levels at 415.26 parts per million (ppm) baseline. It is the
first time on record that the observatory measured a daily baseline above
415ppm. According to scientists, the last time Earth’s atmosphere contained
this much CO2 was 3 million years ago.
The Mauna Loa Observatory (MLO) is an
atmospheric research facility on Mauna Loa, on the island of Hawaii, located in
the U.S. state of Hawaii. The observatory is part of the National Oceanic and
Atmospheric Administration (NOAA) – Earth System Research Laboratory (ESRL) –
Global Monitoring Division (GMD).
There are certain factors that make MLO ideal
for monitoring constituents in the atmosphere that can cause climate change
such as- a) undisturbed air, b) remote location, and c) minimal influences of
vegetation and human activity.
MLO has been monitoring and collecting data
related to atmospheric change since the 1950’s.
Concentration of CO2 in Earth’s atmosphere is represented by the Keeling
Curve- named after its creator, Dr. Charles David Keeling.
At the end of 2018, the Mauna Loa Observatory
recorded the fourth-highest annual growth in the concentration of atmospheric
CO2 in its 60 years of record keeping. In 2013, CO2 levels were recorded as
exceeding 400 ppm for the first time in human history. In comparison, CO2
levels were around 315 ppm at the start of record keeping in the 1950s.
The high concentrations of atmospheric CO2
clearly indicates that nations are not on track in fulfilling the commitment to
2015 Paris Climate Change Agreement. The Paris agreement aims to a) keep global
temperature rise in 21st century well below 2 degrees Celsius above
pre-industrial levels and b) pursue efforts to limit the temperature increase
even further to 1.5 degrees Celsius.
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