2020 is officially one of the hottest on record, a sign of relentless global warming, according to several analyzes published by scientists around the world last week.
The heat record comes after a year written on climate disasters: historic heatwaves, storms, and wildfires.
“This is a clear indication that the global signal from man-made climate change is as strong today as the energy of nature,” said Petteri Taalas, secretary-general of the World Meteorological Organization, in a statement.
Analyzes disagree on whether 2020 is the hottest year on record. A NASA report published on Thursday found that 2020 narrowly outperformed 2016 as the hottest year, effective record binding. Another analysis, published on Thursday by the National Oceanic and Atmospheric Administration, ended 2020 an almost second to 2016. And last week, the European Union’s Copernicus Climate Change Service determined 2020 tied in 2016 as the hottest year.
The conclusions differ slightly because the research groups applied different methods for compiling a global picture of temperature based on temperature observations from thousands of weather stations.
The 2020 heatwave is the latest in several years to be hit by a lot of heat.
“The past seven years have been the hottest seven years on record,” said Lesley Ott, a NASA researcher. No matter how each year falls, “the consistency of the most recent warmest years on record is very clear, very clear,” he said.
For all of this analysis, “the difference between 2020 and 2016 is smaller than record uncertainty,” Zeke Hausfather, a climate scientist with the independent Berkeley Earth research group, told BuzzFeed News by email. “That’s why it’s an effective tie for the most heat.”
The year 2020 is marked by warmer temperatures for most of the year, marking the end of the natural cold event, La Niña.
“The exceptional heat of 2020 despite a La Niña event, with a temporary cooling effect,” Taalas said.
Climate change is bringing other record warming factors into 2020.
Siberia experienced a month -long heatwave and the Arctic town of Verkhoyansk ended its hottest day on record, reaching 100 degrees Fahrenheit on June 20. “This event would have been impossible without human intervention. -or climate, ”a group of scientists concluded.
2020 is the warmest year on record in Europe, this year at 1.6 degrees Celsius above the average temperature from 1981 to 2010, according to Copernicus ’analysis. 2019 previously held this record, with the observed temperature of 0.4 degrees Celsius higher than the same period.
Last year also marked the fastest known hurricane season in the Atlantic Ocean, as well as a history destructive series of fires in the western US. The result is being experienced in the US most of the billion-dollar disasters in 2020. The year also begins with some of worst fire in Australian history. In addition, carbon dioxide levels continue to rise in the atmosphere, hitting a new maximum of 413 parts per million in May.
Meanwhile, the pandemic has provoked an economic shock of cause U.S. emissions drop an estimated 10.3% in 2020, according to a preliminary analysis by the research organization Rhodium Group, part of a more trends in reducing world emissions in the past year. But a short-term reduction in emissions is not enough to curb global warming-which will require cutting long-term emissions.
“Most of the warming we’re seeing is due to human emissions of greenhouse gases,” Ott said.