Scientists say 2021 was the fifth warmest year on Earth


Paris: The last seven years have been the hottest on record globally “by a clear margin” European UnionThe Climate Monitoring Service reported Monday that it had raised alarms over a sharp rise in record concentrations. Methane In the atmosphere
Countries around the world have been rocked by the relentless onslaught of weather disasters associated with global warming in recent years, including record wildfires in Australia and Siberia, a 1000-year heat wave and heavy rainfall in North America at once. Floods in Asia, Africa, the US and Europe.
In its most recent annual assessment, Copernicus Climate Change Service (C3S) confirmed that 2021 has joined the uninterrupted heat wave since 2015.
It found that last year was the fifth hottest year on record globally, slightly warmer than 2015 and 2018. Accurate measurement goes back to the mid-19th century.
The average annual temperature was 1.1 to 1.2 degrees Celsius higher than the pre-industrial level measured between 1850 and 1900, C3S said.
This was despite the cooling effect of the natural La Nina weather phenomenon.
Overall, the monitoring service found the last seven years to be “the hottest years on record by a clear margin”.
“2021 was the second year of extreme temperatures with the hottest summer in Europe, the heatwaves in the Mediterranean, not to mention the unprecedented high temperatures in North America,” the C3S director said. Carlo Buantempo.
“These events are a clear reminder of the need to change our ways, to take decisive and effective action towards a sustainable society and to work towards reducing net carbon emissions.”
C3S also observed the atmospheric concentrations of the planet-warming gases carbon dioxide and methane, both of which were found to have increased without any sign of recession.
Methane in particular has risen “very significantly” to an annual record of about 1,876 parts per billion (ppb).
The growth rates for 2020 and 2021 were 14.6 ppb per year and 16.3 ppb per year, respectively. Which is more than double the average annual growth rate seen in the last 17 years.
But the range of man-made and natural resources has made it difficult to determine why there has been such a strong increase in recent years, C3S said.
Methane (CH4) is the second most responsible gas for global warming after CO2. Although more short-lived in the atmosphere, it is many times more potent than CO2.
Natural resources include wetlands, while man-made resources leak from natural gas and oil production, coal mining and landfills, as well as rice, paddy, livestock and manure management.
Vincent-Henry Peuch, director of the Copernicus Atmosphere Monitoring Service, which tracks greenhouse gas emissions, said observation evidence is important in trying to avoid a “climate disaster.”
Reducing the amount of methane in the air would translate into a rapidly rising temperature slump and help close the so-called emissions gap between the target of 1.5C cap and 2.7C on the Paris Agreement warming, even as we move forward. All nations honor their carbon-cutting promises.
This has aroused the interest of policy makers eager to find the fastest ways to reduce emissions.
At last year’s COP26 climate summit, nearly a hundred nations joined the initiative to reduce methane emissions by at least 30 percent this decade. Notably, China was absent.
The oil and gas industry has the greatest potential for rapid decline, especially through the detection and repair of gas leaks during production and transportation.
While global warming seems to be slowing down, its impact on extreme events is “dramatic”. Rowan Sutton, Britain’s National Center for Atmospheric Science at Reading University.
“We should look at the record-breaking events of 2021, such as the heatwave in Canada and the floods in Germany, which should be seen as a punch in the face to warn politicians and the public alike of the urgency of the climate crisis,” he said. Science Media Center.
“Furthermore, the steady rise in greenhouse gas concentrations in the atmosphere screams that the underlying causes have not yet been addressed.”

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