July 2021 has became the hottest month in 142 years of recordkeeping, meteorologists said on Friday.
According to data released by the National Oceanic and Atmospheric Administration (NOAA), the globe averaged 16.73 degrees Celsius this month – that’s 1.67F (0.93 C) above the 20th-century average of 60.4F (15.8C).
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The last seven Julys, from 2015 to this year, have been the hottest seven Julys on record, said NOAA climatologist Ahira Sanchez-Lugo. This July’s temperatures were 0.02F (0.01C) higher than the previous record set in July 2016. That record was then tied in 2019 and 2020.
“In this case first place is the worst place to be, NOAA Administrator Rick Spinrad said in a press release. “This new record adds to the disturbing and disruptive path that climate change has set for the globe.”
“This is climate change,” said Pennsylvania State University climate scientist Michael Mann.
This data comes just days after the United Nations’ Intergovernmental Panel on Climate Change (IPCC) warned of “irreversible” impacts of climate change if greenhouse gas emissions are not reduced.
Warming on land in western North America and in parts of Europe and Asia really drove the record-setting heat, Sanchez-Lugo said. Asia had its hottest ever July, while Europe experienced its second hottest, both beating records from 2010.
Northern Hemisphere temperatures were a fifth of a degree Celsius higher than the previous record set in July 2012, which for temperature records is a wide margin, Sanchez-Lugo said.
One factor helping the world bake this summer is a natural weather cycle called the Arctic Oscillation, sort of a cousin to El Nino, which in its positive phase is associated with more warming, the NOAA climatologist said.
From : pk.mashable.com