In 2023, we’re witnessing potentially the hottest year in human history, with an unprecedented, record-breaking Northern Hemisphere summer heat that the UN Secretary-General calls a “climate breakdown.”
2023 is likely to be the hottest year in human history, and global temperatures during the Northern Hemisphere summer were the warmest on record, the EU climate monitor said on Wednesday.
Heatwaves, droughts, and wildfires struck Asia, Africa, Europe, and North America over the last three months, with dramatic impact on economies, ecosystems, and human health.
The average global temperature in June, July, and August was 16.77 degrees Celsius (62.19 degrees Fahrenheit), smashing the previous 2019 record of 16.48C, the European Union’s Copernicus Climate Change Service (C3S) said in a report.
“The three months that we’ve just had are the warmest in approximately 120,000 years, so effectively human history,” C3S deputy director Samantha Burgess told AFP.
Last month was the hottest August on record and warmer than all other months except July 2023.
“Climate breakdown has begun,” said UN Secretary-General Antonio Guterres.
“Scientists have long warned what our fossil fuel addiction will unleash,” he added. “Our climate is imploding faster than we can cope, with extreme weather events hitting every corner of the planet.”
Record-high global sea surface temperatures played a major role in stoking heat throughout the summer, with marine heat waves hitting the North Atlantic and the Mediterranean Sea.
If the Northern Hemisphere has a “normal” winter, “we can almost virtually say that 2023 will be the warmest year that humanity has experienced,” Burgess said.
Warming oceans
Oceans have absorbed 90 percent of the excess heat produced by human activity since the dawn of the industrial age, according to scientists.
This excess heat continues to accumulate as greenhouse gases, mainly from burning oil, gas, and coal, build up in the Earth’s atmosphere.
The average ocean temperature has been topping seasonal heat records on a regular basis since April.
Warmer oceans are also less capable of absorbing carbon dioxide (CO2), exacerbating the vicious cycle of global warming as well as disrupting fragile ecosystems.
Antarctic sea ice remained at a record low for the time of year with a monthly value 12 percent below average, “by far the largest negative anomaly for August since satellite observations began” in the 1970s, C3S said.
Higher temperatures are likely to come: the El Nino weather phenomenon, which warms waters in the southern Pacific and beyond, has only just begun.
Scientists expect the worst effects of the current El Nino to be felt at the end of 2023 and into next year.
Finding climate solutions
At the 2015 Paris Climate Summit, countries agreed to keep global temperature increases to “well below” 2C above pre-industrial levels, with an aspirational target of 1.5C.
A report by UN experts due this week will assess the world’s progress in meeting the goal and will inform leaders ahead of a high-stakes climate summit in Dubai starting on November 30.
The so-called “Global Stocktake” is expected to show that countries are well behind in meeting their commitments.
“Surging temperatures demand a surge in action. Leaders must turn up the heat now for climate solutions,” said Guterres.
The C3S findings came from computer-generated analyses using billions of measurements from satellites, ships, aircraft, and weather stations around the world.
Proxy data such as tree rings and ice cores allow scientists to compare modern temperatures with figures before records began in the mid-19th century.
Katrine Dige Houmøller, with AFP
