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Le Matin – 2020 closes the hottest decade on record


The year 2020 leaves in its wake the hottest decade on record and one of the three hottest years ever measured, according to the #World #Meteorological #Organization (WMO).

#Despite a cooling due to #La #Niña, 2020 has been a year of exceptional heat that has now come of age and has impacted weather conditions in many parts of the world, the UN agency said. #According to most models, #La #Niña is expected to peak in intensity either this month or #January, and continue until early next year. “#Years of record heat have generally coincided with a strong #El #Niño episode, as it did in 2016,” said WMO #Secretary #General #Petteri #Taalas. WMO has also documented the past six years as the hottest on record. #In #January, the UN agency will release consolidated temperature figures for 2020, based on five global temperature datasets. #This data will be incorporated into a final #State of the #Climate in 2020 report, which will be published in #March and will include information on selected climate impacts. #So far, the five data sets for the first ten months of 2020 have placed this year second for the hottest temperature of the year to date, after 2016 and before 2019. #According to the service’s monthly reports #Copernicus on climate change from the #European #Union, the #United #States #National #Oceanic and #Atmospheric #Administration, the #Goddard #Institute for #Space #Studies at NASA and the #Japan #Meteorological #Agency, the month of #November was classified as the hottest or the second hottest on record.
#At the beginning of #December, #Petteri #Taalas indicated that “the global average temperature in 2020 should be approximately 1.2 ° C higher than its pre-industrial value (period 1850-1900). There is at least a one in five chance that it will temporarily exceed 1.5 ° C by 2024 ”. The most noticeable heat was observed in #North #Asia, particularly in the #Siberian #Arctic, where temperatures were more than 5 ° C above average. The #Siberian heat was strongest at the end of #June. “We recorded 38.0 ° C in #Verkhoyansk on the 20th of this month, which is provisionally the highest temperature observed north of the #Arctic #Circle. The corresponding fire season has been the most active in the past 18 years, according to estimates of CO2 emissions from the fires, ”WMO wrote. #Based on data sets dating back to 1960, the heat content of the oceans has never been higher than in 2019. “It has become clear in recent decades that heat is being absorbed more and more quickly.
The oceans store more than 90% of the excess energy that accumulates in the climate system due to increased concentrations of greenhouse gases, ”continues this UN body. The oceans absorb about 23% of annual anthropogenic CO2 emissions to the air, helping to mitigate the effects of climate change on the planet.
L.M.

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https://lematin.ma/journal/2020/2020-cloture-decennie-plus-chaude-enregistree/350459.html

##Matin #closes #hottest #decade #record

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