January 18, 2022

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In the last seven years, unprecedented heat

The European Copernicus Service on Climate Change is also monitoring the recorded concentrations of these powerful greenhouse gases CO2 and methane, which are responsible for global warming.

According to the UN, the European Copernicus Service for Climate Change (C3S) confirms this. The last seven years “ From a distance The European Center for Medium-Range Weather Forecasts (ECMWF)’s service announces this in its annual report. 2021 is the fifth warmest year: the average annual temperature is 1.1 to 1.2 C higher than the pre-industrial level of 1850-1900.

This increase extends particularly from the west coast of North America to Greenland, to Central Africa and the Middle East.

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

To put the 2021 estimate in perspective, we need to analyze what happened in previous decades to find out whether temperature anomaly is part of the natural variation of the climate or whether it is a long-term trend. Jean-Noel Debat, director of Copernicus services at the European Center for Neutral Weather Forecasts, explains. For 2021, the 5th warmest year since the beginning of the weather record (mid-19th century) is less important than the fact that the last 7 years have been the hottest or warmest 10 years. The years were in the 21st century because it further demonstrates the harsh long-term trend.

Last summer was marked by a peak, especially in Canada. The city of Lytton there At the end of June, the historic national temperature was recorded (49.6 degrees Celsius). If the discovery is not clear to northern France, Europe has recorded its hottest summer, with powerful heat waves in the Mediterranean and flooding in Central Europe. Paris is far from the path of agreements

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The European Service is also interested in the concentrations of greenhouse gases responsible for this warming. This confirms the constant increase in carbon dioxide and methane: global levels of CO2 reach an annual record with an average of 414 ppm (one million molecules in the air), especially when triggered by fire. Those in Siberia – it released 1,850 megatons of carbon.

Methane (CH4) concentrations record a significant increase (approximately 16.3 ppb / year growth rate) of about 1876 ppb (billion shares per annum), which the company does not accurately explain, he explains: “ Since methane has many sources, it is challenging to determine the origin of the increase, some of which are anthropological (e.g. exploitation of oil and gas fields) but natural or semi-natural (e.g. wetlands).

The results of this report once again show how far the world is moving from the objectives of the 2015 Paris Agreement to reduce global greenhouse gas emissions by controlling global warming to + 2 ° C or + 1.5 C. According to the 2018 Climate Experts (IPCC) report, the world needs to reduce its CO2 emissions by 45% by 2030 compared to 2010 and achieve carbon neutrality by the middle of the century so that this limit does not exceed + 1.5 C. .