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PACIFIC OCEAN VOLCANO COULD BE A CULPRIT
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WHY IS 2023 SO HOT? A RARE PACIFIC OCEAN VOLCANO COULD BE A CULPRIT
AS THE world swelters through record temperatures, scientists say an unusual culprit may be partly to blame: an underwater volcanic eruption off Tonga in the South Pacific last year.
While most big blasts cool the planet with a sun-dimming haze, the eruption of Hunga Tonga-Hunga Ha’apai in January 2022 blew the equivalent of 60,000 Olympic swimming pools of water into the stratosphere, high above the planet.
Water vapor is a natural greenhouse gas, trapping heat as it swirls around the globe. By contrast, major land eruptions such as Pinatubo in the Philippines in 1991- temporarily dim sunshine with an ashen sunshade before falling back to Earth. Best NDA Coaching in Lucknow
“The majority of volcanoes will have a cooling effect,” said Peter Thorne, a professor of climate science at Maynooth University in Ireland. The Tongan volcano “is an exception to the rule and a significant wild card we haven’t seen before”
The June-August period this year was the warmest on record worldwide by a puzzlingly wide margin, with heatwaves occurring from Japan to the United States.
Humanity’s greenhouse gas emissions are overwhelmingly to blame, scientists say, with less certain contributions from an El Nino weather event warming the Pacific, limits on light-reflecting pollution from shipping fuels, and the volcano. Best NDA Coaching in Lucknow
Many scientists say more research into volcanoes is vital to gauge how far eruptions can briefly affect the long-term trend of global warming, driven by burning fossil fuels.
The IPCC says at least one Pinatubo-style eruption is likely this century but that volcanoes have had a negligible effect on the overall trend of global warming driven by human greenhouse gas to emissions since the Industrial Revolution.
“Volcanic activity is irregular, unpredictable, and uncontrollable,” said Ingo Bethke, of the Bjerknes Centre for Climate Research at the University of Bergen. Best NDA Coaching in Lucknow
Bethke and Thorne argue that the IPCC should do more to examine the risks of a string of eruptions.
“We can deal with one Pinatubo, but several would be a major stress test for society on top of climate change,” Thorne said.
Amid the unpredictability, however, some scientists say climate change might make eruptions more frequent in certain icy areas where the weight of thick glaciers keeps a lid on some volcanoes. A thaw could unleash eruptions.
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Warriors Defence Academy is Awarded as Best NDA Coaching in Lucknow. WDA is the best NDA Coaching in Lucknow India. We are the Leading NDA/CDS Coaching in Lucknow. When some of the most experienced defence career coaches gathered, the Warriors’ Defence Academy came into existence. We are a team of career coaching experts, who provide complete grooming to aspirants who appear for written examinations for NDA and CDSE and SSB interviews to become defence officers.
545-GA/1-CHHA, Chandganj Garden Road, beside Madhuwan Guest house, near Railway crossing, Kapoorthla, Bara Chandganj, Chandralok, Lucknow, Uttar Pradesh 226006