'It is worth recalling that the last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago,' WMO Secretary-General Petteri Taalas said.
levels crossed the symbolic 400 parts per million barrier—the first time this has happened in several million years.concentrations has significant implications for the global climate, contributing to everything from rising temperatures to sea level rise and more extreme weather.
Carbon dioxide persists in the atmosphere for centuries, and remains in the ocean even longer. In addition to this, concentrations of other potent greenhouse gases—such as methane and nitrous oxide—have also been rising at faster rates over the past few decades. All in all, this has contributed to a 43 percent increase in the warming effect on the climate of long-lived greenhouse gases since 1990. Carbon dioxide is responsible for around 80 percent of this warming effect, according to the National Oceanic and Atmospheric Administration.
The One World Trade Center is seen as a factory emits smoke on January 18, 2018 from Newark, New Jersey."There is no sign of a slowdown, let alone a decline, in greenhouse gases concentration in the atmosphere despite all the commitments under the Paris Agreement on Climate Change," WMO Secretary-General Petteri Taalas said in a statement."We need to translate the commitments into action and increase the level of ambition for the sake of the future welfare of mankind.
Earlier this month, scientists announced that emissions of nitrous oxide into the atmosphere have increased significantly over the past two decades, due in large part to agricultural practices.
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