HomeWorldClimate change: July set to be world's warmest month on record

Climate change: July set to be world’s warmest month on record

Climate change: July set to be world’s warmest month on record

Gloria Dickie (Reuters) – July 2023 is set to upend previous heat benchmarks, U.N. Secretary-general António Guterres said on Thursday after scientists said it was on track to be the world’s hottest month on record.

The U.N. World Meteorological Organization (WMO) and European Union’s Copernicus Climate Change Service also said in a joint statement it was “extremely likely” July 2023 would break the record.

“We don’t have to wait for the end of the month to know this. Short of a mini-Ice Age over the next days, July 2023 will shatter records across the board,” Guterres said in New York.

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“Climate change is here. It is terrifying. And it is just the beginning,” he told reporters, adding “the era of global boiling has arrived”.

The effects of July’s heat have been seen across the world. Thousands of tourists fled wildfires on the Greek island of Rhodes, and many more suffered baking heat across the U.S. Southwest. Temperatures in a northwest China township soared as high as 52.2C (126F), breaking the national record.

While the WMO would not call the record outright, instead waiting until the availability of all finalised data in August, an analysis by Germany’s Leipzig University released on Thursday found that July 2023 would clinch the record.

This month’s mean global temperature is projected to be at least 0.2C (0.4F) warmer than July 2019, the former hottest in the 174-year observational record, according to EU data.

The margin of difference between now and July 2019 is “so substantial that we can already say with absolute certainty that it is going to be the warmest July”, Leipzig climate scientist Karsten Haustein said.

July 2023 is estimated to be roughly 1.5 degrees Celsius (2.7 Fahrenheit) above the pre-industrial mean. The WMO has confirmed that the first three weeks of July have been the warmest on record.

Commenting on the pattern, Michael Mann, a climate scientist at the University of Pennsylvania, said it was clear by mid-July that it was going to be a record warm month, and provided an “indicator of a planet that will continue to warm as long as we burn fossil fuels”.

130549841 global temp record nc.png

Normally, the global mean temperature for July is around 16C (61F), inclusive of the Southern Hemisphere winter. But this July it has surged to around 17C (63F).

What’s more, “we may have to go back thousands if not tens of thousands of years to find similarly warm conditions on our planet”, Haustein said. Early, less fine-tuned climate records — gathered from things like ice cores and tree rings — suggest the Earth has not been this hot in 120,000 years.

Haustein’s analysis is based on preliminary temperature data and weather models, including forecast temperatures through the end of this month, but validated by unaffiliated scientists.

“The result is confirmed by several independent datasets combining measurements in the ocean and over land. It is statistically robust,” said Piers Forster, a climate scientist at Leeds University in Britain.

The planet is in the early stages of an El Nino event, borne of unusually warm waters in the eastern Pacific. El Nino typically delivers warmer temperatures around the world, doubling down on the warming driven by human-caused climate change, which scientists said this week had played an “absolutely overwhelming” role in July’s extreme heatwaves.

While El Nino’s impacts are expected to peak later this year and into 2024, it “has already started to help boost the temperatures”, Haustein said.

130549842 gistemp global monthly anomaly bars july nc.png

July is traditionally the hottest month of the year, and the EU said it did not project August would surpass the record set this month.

However, scientists expect 2023 or 2024 will end up as the hottest year in the record books, surpassing 2016.

(This story has been refiled to remove the double attribution of Guterres)

Photo Source : BBC

Reporting by Gloria Dickie in London, Ontario; additional reporting by Ali Withers in Copenhagen and David Stanway in Singapore; Editing by Mark Heinrich and Alison Williams

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