By Seth Borenstein

Earth sizzled in July and became the hottest month in 142 years of recordkeeping, U.S. weather officials announced.

As extreme heat waves struck parts of the United States and Europe, the globe averaged 62.07 degrees (16.73 degrees Celsius) last month, beating out the previous record set in July 2016 and tied again in 2019 and 2020. the National Oceanic and Atmospheric Administration said Friday. The margin was just .02 degrees (.01 Celsius),

The last seven Julys, from 2015 to 2021, have been the hottest seven Julys on record, said NOAA climatologist Ahira Sanchez-Lugo. Last month was 1.67 degrees (0.93 degrees Celsius) warmer than the 20th century average for the month.

“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. “It is an exclamation mark on a summer of unprecedented heat, drought, wildfires and flooding.”

Earlier this week, a prestigious United Nations science panel warned of worsening climate change caused by the burning of coal, oil and natural gas and other human activity.

Warming on land in western North America and in parts of Europe and Asia really drove the record-setting heat, Sanchez-Lugo said. While the worldwide temperature was barely higher than the record, what shattered it was land temperature over the Northern Hemisphere, she said.

Northern Hemisphere temperatures were a third of a degree (.19 degrees Celsius) higher than the previous record set in July 2012, which for temperature records is “a wide margin,” Sanchez-Lugo said.

July is the hottest month of the year for the globe, so this is also the hottest month on record.

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.

Even with a scorching July and a nasty June, this year so far is only the sixth warmest on record. That's mostly because 2021 started cooler than recent years due to a La Nina cooling of the central Pacific that often reduces the global temperature average, Sanchez-Lugo said.

“One month by itself does not say much, but that this was a La Nina year and we still had the warmest temperatures on record ... fits with the pattern of what we have been seeing for most of the last decade now,” said University of Illinois meteorology professor Donald Wuebbles.

While the world set a record in July, the United States only tied for its 13th hottest July on record. Even though California, Nevada, Oregon and Washington had their hottest Julys, slightly cooler than normal months in Texas, Oklahoma, Kansas, Arkansas, Missouri, Alabama, Maine, Vermont and New Hampshire kept the nation from approaching record heat levels.

The last time the globe had a July cooler than the 20th century average was in 1976, which was also the last year the globe was cooler than that normal.

“So if you’re younger than 45 you haven’t seen a year (or July) where the mean temperature of the planet was cooler than the 20th century average,” said Princeton University climate scientist Gabriel Vecchi.

___

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

Share:
More In Science
New BA.2 Variant Predicted to Boost Covid Cases in U.S.
A subvariant of the omicron COVID-19 variant called BA.2 is causing an outbreak overseas. Now, some health experts worry it could also lead to an increase in COVID-19 cases in the U.S. Dr. Amesh Adalja, infectious disease specialist and senior scholar at Johns Hopkins Center for Health Security, joins Cheddar News to discuss.
Green Battery Materials Maker Nouveau Monde Graphite Aims to Power Energy Revolution
Nouveau Monde Graphite says it wants to power the sustainable energy revolution. The Canadian company is developing carbon-neutral battery materials to serve the growing EV and cleantech markets and is doing so via a mining and manufacturing operation in Quebec. Eric Desaulniers, founder, president & CEO of Nouveau Monde Graphite, joins Cheddar News' Closing Bell to discuss.
There's A New Subvariant. How Concerned Should We Be?
Health experts are warning an even more contagious subvariant of Omicron, known as BA.2, could soon lead to another surge in Covid cases here in the U.S. The variant has already driven cases to skyrocket in China and Europe, which has historically served as a preview to the pattern the U.S. has seen throughout the pandemic. This comes at a time when protection from booster shots is waning for most people who got them. Dr. Jen Caudle, Family Physician & Associate Professor at Rowan University, explains what we can do to protect ourselves against the new variant and how we should act as warnings of another surge rise.
Cresco Labs to Become the Largest U.S. Cannabis Company by Sales With Columbia Care Acquisition
Cannabis producer Cresco Labs is acquiring rival Columbia Care in a $2 billion all-stock deal, creating the largest U.S. cannabis company by sales. The deal, which is expected to close in the fourth quarter of 2022, is one of the biggest in the industry's history and would make Cresco the dominant player in a market projected to reach $46 billion in revenue by 2026. Charlie Bachtell, CEO of Cresco Labs, joins Cheddar News' Closing Bell to discuss.
Breaking Down Moderna Seeking COVID Vaccine Approval for Kids Under 6
Moderna announced it's seeking emergency use approval for its COVID-19 vaccine from the FDA for children under 6 years old. A former FDA associate commissioner and the president and co-founder of the Center for Medicine in the Public Interest (CMPI) Peter Pitts joined Cheddar News to talk about the timeline, benefits, and risks that come with the approval of the vaccine. "We want to protect their parents and their grandparents and their caregivers and their daycare providers, so it's all about protecting not just the kids but all around the people that are surrounding those kids," he said.
Load More