2020 is officially one of the hottest years on record, a sign of unabated global warming, according to some analysis published by scientists around the world last week.
The heat record comes after a year that is stopped by climatic disasters: historic heat waves, storms and wildfires.
Petteri Taalas, Secretary General of the World Meteorological Organization, said: “This is a clear sign that the current global signal from human-induced climate change is now as strong as the impact of nature”.
Analyzes disagree as to whether 2020 will be the hottest year ever recorded. A NASA report released on Thursday shows that 2020 has beaten 2016 by almost as little as its warmest year ever, Effectively tighten records. Another analysis, published on Thursday of the National Oceanic and Atmospheric Administration, concluding that 2020 is the second year close to 2016. And last week, the European Union’s Copernicus Climate Change Service determined 2020 associated with 2016 is the warmest year.
The conclusions differ slightly because the research teams apply different techniques to put together a picture of the global temperature based on temperature observations from thousands of weather stations.
The heat record for 2020 is just the latest in a series of years suffering more temperatures.
“The past seven years have been the warmest seven on record,” said Lesley Ott, a NASA researcher. So no matter where the individual years fall, “the consistency of the most recent years as the warmest period on record is very, very obvious,” she said.
For all of these analyzes, “the difference between 2020 and 2016 is smaller than the uncertainty on file,” says Zeke Hausfather, a climate scientist at the independent Berkeley Earth team. BuzzFeed News by email. “So it’s really a tie for the warmest.”
The year 2020 is marked by the sky-high temperature for most of the year, only slowly decreasing towards the end by the natural cooling phenomenon, La Niña.
“The particular heat of 2020 is despite the La Niña event, which has a temporary cooling effect,” said Taalas.
Climate change drives other major heat records in 2020.
Siberia experienced a long-lasting heatwave that lasted for months and the Arctic town of Verkhoyansk hit a record for the hottest day, reaching 100 degrees Fahrenheit on June 20. Human-induced climate change ”. conclude.
2020 is the warmest year on record in Europe, 1.6 degrees Celsius higher than the average temperature between 1981 and 2010, according to an analysis by Copernicus. The year 2019 previously held this record where the observed temperature was 0.4 degrees C higher than the same period.
Last year also marked The most famous hurricane season in the Atlantic, as well as a history causing massive forest fires in the western United States. As a result, the United States has experienced it most of the billion dollar disaster year 2020. The year also begins with a number worst wildfire in Australian history. Furthermore, carbon dioxide levels continue to rise in the atmosphere, reaching a new maximum of 413 parts per million in May last year.
Meanwhile, the pandemic has caused an economic shock US emissions decreased by estimated 10.3% by 2020, according to preliminary analysis by research organization Rhodium Group, part of the larger global trend for emissions reductions last year. But short-term reductions in emissions won’t be enough to curb the world’s warming trend – which will require cutting emissions in the long run.
“Much of the warming we’re seeing is human-made greenhouse gas emissions,” Ott said.