If 2021 has not been
than Ranked fifth among the hottest years on record, it has suffered the devastating effects of climate change: exceptional and deadly heat waves in North America and Southern Europe, devastating fires in Canada or Siberia, spectacular cold spell in the center of the United States or extreme precipitation in China and Western Europe.
Despite a level pulled down by the weather phenomenon La Niña, 2021 nevertheless recorded according to Copernicus an average temperature higher by 1.1 ° C to 1.2 ° C compared to the pre-industrial era (1850-1900), a benchmark comparison to measure the warming caused by emissions of greenhouse gases from human activity.
The goal of the 2015 Paris Agreement, contain global warming
distinctly below +2 ° C and if possible at +1.5 ° C, is therefore still dangerously close.
On an annual average, 2021 ranks slightly ahead of 2015 and 2018, with 2016 remaining the hottest.
And the last seven years
were the hottest on record, by a clear margin, notes the European body.
It is a stark reminder of the need for us to change, to take effective and decisive action to move towards a sustainable society and to work to reduce carbon emissions, underlined Carlo Buontempo, director of the climate change department of Copernicus.
Because the agency measured for 2021 new record concentrations in the atmosphere of greenhouse gases produced by human activity and responsible for global warming.
CO2, by far the leading cause of global warming and which comes mainly from the combustion of fossil fuels and the production of cement, has reached a record level of 414.3 ppm (parts per million), according to the data
foreplay of Copernicus.
For 2020, despite the slowdown in activity due to the pandemic, the World Meteorological Organization (WMO, UN agency) had measured this concentration at 413.2 ppm, or 149% higher than the pre-industrial level.
Copernicus also tracks the emissions of methane, a greenhouse gas even more powerful than CO2, but which does not persist for a long time in the atmosphere, of which about 60% are of human origin (ruminant farming, rice cultivation, landfills, the rest from natural sources such as peatlands).
They too have
continued to increase in 2021 […] reaching an unprecedented maximum average, according to the European agency, which emphasizes, however, that the origin of this increase is not
not fully understood.
Towards a “catastrophic” warming
During the COP26 climate conference in November, around 100 countries joined a
initiative aiming to reduce methane emissions by 30%. Objective which could, if it were met, make more realistic the slogan hammered out at the Glasgow conference ofdegree “,” text “:” keep alive (the objective of) 1.5 degree “}}”>keep alive (the target of) 1.5 degrees.
The emission reduction commitments made by the various countries, including those announced on the occasion of COP26, leave the world on a warming trajectory of 2.7 ° C, a level qualified as
catastrophic by the UN.
On the occasion of this COP, the
It’s a new warning about what we are doing to our planet [et] we desperately need real action to cut emissionsSir Brian Hoskins, director of the Grantham Institute on Climate Change at Imperial College London, commented on Monday, stressing that he
becomes hard to say something new every time we see a new nail stuck in the planetary coffin.