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The last seven years, by far the hottest on record

2022-01-10T12:09:29.754Z


The European Copernicus service on climate change is also observing record concentrations of CO2 and methane, these powerful greenhouse gases responsible for global warming.


The UN predicted it, the European Copernicus Service on Climate Change (C3S) confirms it.

The past seven years have been "

by far

" the warmest on record globally, the European Center for Medium-Range Weather Forecasts (ECMWF) service announces in its annual report.

2021 was the fifth warmest year on record: the annual average temperature rose 1.1 to 1.2 ° C above the pre-industrial level of 1850-1900.

Read also COP26: limit warming to 1.5 ° C, an ambitious but essential goal

This increase is particularly marked along a strip stretching from the west coast of North America to Greenland, as well as central Africa and the Middle East.

Air temperature at a height of two meters for 2021, compared to the 1991-2020 reference average.

Copernicus service.

Last summer was particularly marked by extremes, especially in Canada, where the city of Lytton recorded at the end of June the historic national temperature record (49.6 degrees Celsius).

If this finding is not necessarily obvious for the northern half of France, Europe for its part experienced the hottest summer on record, with powerful heat waves in the Mediterranean and flooding in central Europe.

"

These events are a stark reminder of the need to change our habits, to take decisive and effective measures in favor of a sustainable society and to work to reduce net carbon emissions

", recalls in a press release Carlo Buontempo, director of C3S.

Far from the trajectory of the Paris agreements

The European service is also interested in the concentrations of greenhouse gases, responsible for this warming.

It confirms, not surprisingly, that those of carbon dioxide and methane have continued to increase: global levels of CO2 reach an annual record with an average of 414 ppm (parts per million molecules in the air), fueled in particular by the fires - including those in Siberia - which released 1,850 megatons of carbon.

Read alsoEnvironment: tools to estimate your own carbon dioxide emissions

Methane (CH4) concentrations also record an annual record of around 1876 ppb (parts per billion) a significant increase (growth rate of 16.3 ppb / year) that the agency does not explain precisely, explains- She: "

Identifying the origin of the increase is a challenge because methane has many sources, some of which are anthropogenic (for example, the exploitation of oil and gas fields) but also natural or semi-natural (such as wetlands).

"

Read alsoMethane, a gas that is both polluting and effective lever of action

The results of this report show once again how far the world is moving away from the objectives of the 2015 Paris Agreement aimed at reducing greenhouse gas emissions in order to limit global warming to + 2 ° C, or even + 1.5 ° C compared to the pre-industrial era.

According to the report of the UN climate experts (IPCC) of 2018, in order not to exceed this threshold of + 1.5 ° C, the world must reduce CO2 emissions by 45% by 2030 compared to 2010 and achieve carbon neutrality by mid-century.

Source: lefigaro

All tech articles on 2022-01-10

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