Climate Central is set to release a new report, revealing that one in four people on the planet experienced climate change-driven temperatures every day in June, July, and August because of the burning of fossil fuels, such as oil, gas, and coal, and human activities.
Between
June and August, 2 billion people were exposed to more than 30 days of
health-threatening temperatures strongly influenced by climate change.
Human-induced heat worsened drought conditions all over the
world, including in Russia, China, Italy and Ghana, leading to crop failures,
prompting governments to declare emergency measures, and resulting in export
bans.
72
countries experienced their hottest summer since at least 1970, significantly
driven by climate change. 180 cities in the Northern Hemisphere experienced at
least one extreme heatwave from June to August. These heatwaves are, on
average, 21 times more likely today because of carbon pollution, mainly caused
by burning coal, oil and gas.
“High
temperatures that were clearly influenced by climate change jeopardized the
health of billions around the world during the past three months,” said Andrew
Pershing, vice president for science at Climate Central. “No region, country,
or city is safe from the deadly threats posed by burning fossil fuels.”
Using
Climate Central’s Climate Shift
Index, this new analysis quantifies the impact of climate change on
temperatures and estimates the number of people affected by these extreme
conditions. It provides detailed data on heat exposure at global, regional,
local levels, and in about 1,200 cities.
To
estimate the risks of heat to human health, researchers looked at days in which
temperatures were significantly hotter than the historical record — the “risky
heat” days. Temperatures on these days are hotter than 90% of temperatures
observed in a local area over the 1991-2020 period — this represents a minimum
mortality threshold at which heat-related health risks climb statistically.
Key Findings:
Over
2 billion people (25% of the global population) experienced 30 or more days of
risky heat that were made at least three times more likely by climate change.
More
than 4 billion people faced unusual temperatures made at least three times more
likely by climate change on August 13, the peak of the global heat.
During
this record-breaking season, when 72 countries broke their heat record for the
June-August period, few urban areas escaped the impacts of carbon pollution,
mainly caused by the burning of fossil fuels.
The
average person experienced 17 extra days of “risky heat” around the world
because of climate change, representing a potential risk to global health.
Climate
Central is a non-advocacy, non-profit science and news organization providing
authoritative information to help the public and policymakers make sound
decisions about climate and energy.