The year 2020 (“two thousand and twenty”) is the current year; it is a leap year starting on a Wednesday. It is the 2020th year of our era, the 20th year of the third millennium, of the twenty-first century, and the first year of the decade 2020-2029.
Climate and environment
The meteorological winter 2019-2020, that is to say, the period December 2019 to February 2020, is the hottest in Europe since the start of the temperature readings, with a temperature 3.4 higher. ° C at the mean since the start of the surveys 4. This greatly exceeds the previous record, the meteorological winter 2015-2016, of 1.4 ° C4.
From January 2020 to March 2020, Europe experienced its warmest first quarter with an anomaly of + 3.2 ° C compared to the 20th century average5.
Over the period from June 2019 to July 2020 (14 consecutive months), France experienced warmer-than-normal months6 and the country recorded its hottest start to the year on record (January 2020 – July 2020) with a +1.68 ° C anomaly compared to seasonal norms7. Heat peaks of + 35 ° C to + 40 ° C are often crossed more and more in France each year, the symbolic bar of 40 ° C was only half a century ago less exceeded than today, Summers of 2019 and 2020 saw a 40 ° C festival spreading over a large part of the country with an extension to the north of the country8.
Australia has been facing violent fires since August 2019, the blaze has burned more than eighteen million hectares, and more than a billion animals have perished. On January 4, temperature records for the month of January were recorded in particular in the Sydney suburbs with a temperature of 48.9 ° C and 42.9 ° C in Canberra12.
Alaska and Canada are facing a cold snap, the thermometer has dropped to −50 ° C in Alaska and down to −54 ° C in the Canadian territory of Yukon13.
On February 1, the Australian capital (Canberra) broke its monthly record for February, which is 42.7 ° C15.
France experienced a wave of mildness at the beginning of February, the temperature in the south of France was between 25 and 28 ° C, the highest value of which was recorded in the Pyrénées-Atlantiques16 and these are the first 25 ° C recorded in the hexagon at this time of the year17.
With the drop in energy consumption by industries, and the decrease in transport-related emissions, caused by the Covid-19 disease pandemic, a drop in nitrogen dioxide and carbon dioxide levels are also observed in Northern Italy between February 7 and March 8 on the same model as what was observed in China in January-February25. In addition, in mid-March, the same phenomenon of a decrease in atmospheric pollution seemed to be repeated in several areas of Europe26
At the beginning of April, France experienced an early heatwave and more particularly in the north where temperature records were broken. On April 9, it was up to 27 ° C in Paris30. According to data from Copernicus, the month of April 2020 is the second hottest month of April on record, surpassing the month of April 2019 by 0.08 ° C, and only trailing the month of the hottest April, that of April 2016, then 0.01 ° C31.
From May 4 to June 23, 2020, the Ocean Voyages Institute association is leading an expedition to the plastic continent, and recovers 103 tons of plastic waste and brings them back to Hawaii for recycling, which largely beats the previous record of plastic waste which was 48 tonnes (also held by the association) 36.
On June 20, 38.0 ° C was recorded in Siberia, i.e. a temperature 17 ° C above the seasonal norms, it is the temperature all months combined never measured beyond the polar circle43. The temperature there is 10 ° C higher than the average for normal June, also peaking at 37 ° C in the Russian Far East44.
On July 5 in India, the Bihar authorities announced that lightning killed 147 people in 10 days, more than the annual toll of previous years when it was only the start of the monsoon, the hypothesis of a The number of lightning strikes and more intense impacts due to the increase in temperature and humidity of the atmosphere as a result of climate change is favored49.
France recorded its driest month of July since 1959, and a heatwave affected the country at the end of the month50, it was up to 41.9 ° C at the Socoa station (Ciboure) 51
At the beginning of August, a heatwave affected France more precisely the Ile-de-France and Hauts-de-France regions52, 15 departments in the north of France were placed on heatwave red vigilance by Météo-France. This is the 3rd heatwave red vigilance alert, 1 year after the first two historic heatwaves red vigilances of 2019.
California faces historic fires, an apocalyptic orange sky in San Francisco following the fires54.
In mid-September, a late heat wave hit France, on September 14 and 15, many temperature records for the month of September were broken55,56.