BBC NEWS
By Matt McGrath
Environment correspondent
30 October 2017
Concentrations of CO2 in the Earth’s atmosphere surged to a record high in 2016, according to the World Meteorological Organization (WMO).
Last year’s increase was 50% higher than the average of the past 10 years.
Researchers say a combination of human activities and the El Niño weather phenomenon drove CO2 to a level not seen in 800,000 years.
Scientists say this risks making global temperature targets largely unattainable.
This year’s greenhouse gas bulletin produced by the WMO is based on measurements taken in 51 countries. Research stations dotted around the globe measure concentrations of warming gases including carbon dioxide, methane and nitrous oxide.
The figures published by the WMO are what’s left in the atmosphere after significant amounts are absorbed by the Earth’s “sinks”, which include the oceans and the biosphere.
Emissions from human sources have slowed down in the last couple of years according to research, but according to Dr Tarasova, it is the cumulative total in the atmosphere that really matters as CO2 stays aloft and active for centuries.
Over the past 70 years, says the report, the increase in CO2 in the atmosphere is nearly 100 times larger than it was at the end of the last ice age.
Rapidly increasing atmospheric levels of CO2 and other gases have the potential, according to the study, to “initiate unpredictable changes in the climate system… leading to severe ecological and economic disruptions”.
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Video: Ocean circulation plays an important role in absorbing carbon from the atmosphere
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World Meteorological Organization data shows record global carbon dioxide surge
Concentrations of CO2 in the Earth’s atmosphere surged to a record high in 2016, according to the World Meteorological Organization (WMO).