Connect with us

Climate Change

Giant iceberg size of London breaks free of Antarctica

Published

on

(Last Updated On: )

A giant iceberg — the size of greater London — broke free from Antarctica, researchers said Tuesday.

“A huge iceberg (1550 km²), almost the size of Greater London, has broken off the 150m (meter) thick Brunt Ice Shelf,” the British Antarctic Survey (BAS), the UK’s national polar research institute, said on its website.

“It calved after cracks that have been developing naturally over the last few years extended across the entire ice shelf, causing the new iceberg to break free,” it added.

The iceberg broke free on Sunday.

“The iceberg calved when the crack known as Chasm-1 fully extended through the ice shelf,” it added.

The break-off occurred a decade after the BAS scientists first noticed the expansion of sizable cracks in the ice, the statement said, adding that it is the second significant calving from this area in the past two years.

Quoting BAS Director Dame Jane Francis, the statement said: “Our glaciologists and operations teams have been anticipating this event.”

The scientists measured the ice shelf multiple times and “how the ice shelf is deforming and moving, and are compared to satellite images from ESA, NASA and the German satellite TerraSAR-X,” Francis added.

“All data are sent back to Cambridge for analysis,” he said. “So we know what is happening even in the Antarctic winter – when there is no staff on the station, it is dark for 24 hours and the temperature falls below minus 50 degrees C (or -58F).”

‘Calving event has been expected’

For his part, a BAS glaciologist Dominic Hodgson said: “This calving event has been expected and is part of the natural behavior of the Brunt Ice Shelf. It is not linked to climate change.”

“Our science and operational teams continue to monitor the ice shelf in real-time to ensure it is safe, and to maintain the delivery of the science we undertake at Halley,” Hodgson added.

The BAS Halley Research Station is situated on Antarctica’s Brunt Ice Shelf. The area of the ice shelf where the research station is located, according to BAS glaciologists who have been observing the ice shelf’s behavior, is now “unaffected” by the recent calving occurrences.

According to the statement, the Brunt Ice Shelf’s glaciological structure is complex, and the effects of calving episodes are unpredictable. After Chasm-1 started to expand in 2016, BAS scientists moved the station 23 kilometers (14 miles) inland as a precaution.

Since 2017, employees have been deployed to the station only during the Antarctic summer between November to March.

There are currently 21 employees working on the station to maintain the power supplies and facilities that allow scientific studies to continue remotely throughout the winter.

According to satellite monitoring, in 2012 a chasm (Chasm-1) that had been dormant for at least 35 years began to show the first indications of alteration.

Since 2015, Chasm-1 has been expanding, and by December 2022, it has spread across the entire ice shelf, signaling the start of the calving event.

Climate Change

2024 could be world’s hottest year as June breaks records

Greenhouse gas emissions from burning fossil fuels are the main cause of climate change.

Published

on

(Last Updated On: )

Last month was the hottest June on record, the EU’s climate change monitoring service said on Monday, continuing a streak of exceptional temperatures that some scientists said puts 2024 on track to be the world’s hottest recorded year.

Every month since June 2023 – 13 months in a row – has ranked as the planet’s hottest since records began, compared with the corresponding month in previous years, the European Union’s Copernicus Climate Change Service (C3S) said in a monthly bulletin.

The latest data suggest 2024 could outrank 2023 as the hottest year since records began after human-caused climate change and the El Nino natural weather phenomenon both pushed temperatures to record highs in the year so far, some scientists said.

“I now estimate that there is an approximately 95% chance that 2024 beats 2023 to be the warmest year since global surface temperature records began in the mid-1800s,” said Zeke Hausfather, a research scientist at U.S. non-profit Berkeley Earth.

The changed climate has already unleashed disastrous consequences around the world in 2024.

More than 1,000 people died in fierce heat during the haj pilgrimage last month. Heat deaths were recorded in New Dehli, which endured an unprecedentedly long heatwave, and amongst tourists in Greece.

Friederike Otto, a climate scientist at Imperial College London’s Grantham Institute, said there was a “high chance” 2024 would rank as the hottest year on record.

“El Nino is a naturally occurring phenomenon that will always come and go. We can’t stop El Nino, but we can stop burning oil, gas, and coal,” she said.

The natural El Nino phenomenon, which warms the surface waters in the eastern Pacific Ocean, tends to raise global average temperatures.

That effect subsided in recent months, with the world now in neutral conditions before cooler La Nina conditions are expected to form later this year.

C3S’ dataset goes back to 1940, which the scientists cross-checked with other data to confirm that last month was the hottest June since the 1850-1900 pre-industrial period.

Greenhouse gas emissions from burning fossil fuels are the main cause of climate change.

Despite promises to curb global warming, countries have so far failed collectively to reduce these emissions, pushing temperatures steadily higher for decades.

In the 12 months ending in June, the world’s average temperature was the highest on record for any such period, at 1.64 degrees Celsius above the pre-industrial average, C3S said. – Reuters 

Continue Reading

Climate Change

Heavy rains trigger landslides in Nepal, 11 killed, 8 missing

Authorities said the flows of Narayani, Rapti and Mahakali rivers in the west were also rising.

Published

on

(Last Updated On: )

Heavy rains triggered landslides and flash floods killing at least 11 people in the last 36 hours in Nepal and blocking key highways and roads, officials said on Sunday.

Eight people were missing, either washed away by floods or buried in landslides, while 12 others were injured and being treated in hospitals, police spokesperson Dan Bahadur Karki said, Reuters reported.

“Rescue workers are trying to clear the landslides and open the roads,” Karki told Reuters, adding heavy equipment was being used to clear debris.

In southeastern Nepal, the Koshi River, which causes deadly floods in the eastern Indian state of Bihar almost every year, was flowing above the danger level, a district official said.

“The flow of Koshi is rising and we have asked residents to remain alert about possible floods,” Bed Raj Phuyal, a senior official of Sunsari district where the river flows, told Reuters.

He said at 0900 hours (0315 hours GMT) water flow in Koshi River was 369,000 cusecs per second, more than double its normal flow of 150,000 cusecs.

Cusec is the measurement of the flow of water and one cusec is equal to one cubic foot per second.

Authorities said all 56 sluice gates of the Koshi Barrage had been opened to drain out water compared with about 10-12 during a normal situation.

Authorities said the flows of Narayani, Rapti and Mahakali rivers in the west were also rising.

In hill-ringed Kathmandu, several rivers have overflown their banks, flooded roads and inundated many houses.

Local media showed people wading through waist-deep water or residents using buckets to empty their houses.

At least 50 people across Nepal have died in landslides, floods and lightning strikes since mid-June when annual monsoon rains started.

Hundreds of people die every year in landslides and flash floods that are common in mostly mountainous Nepal during the monsoon season which normally starts in mid-June and continues through mid-September.

In the northeastern Indian state of Assam, floods have killed dozens and displaced thousands of people in the past few days.

Continue Reading

Climate Change

Hurricane Beryl strikes Jamaica as Caymans, Mexico brace for storm’s impact

The death toll from the powerful Category 4 hurricane climbed to at least 10, but it is widely expected to rise further as communications come back online across drenched islands

Published

on

(Last Updated On: )

Hurricane Beryl thrashed Jamaica with heavy winds and rain on Wednesday, killing at least one person after forging a destructive, water-soaked path across smaller Caribbean islands over the past couple of days.

The death toll from the powerful Category 4 hurricane climbed to at least 10, but it is widely expected to rise further as communications come back online across drenched islands damaged by flooding and deadly winds, Reuters reported.

In Jamaica, Beryl’s eyewall skirted the island’s southern coast, pummeling communities as emergency groups rushed to evacuate people from flood-prone areas.

“It’s terrible. Everything’s gone. I’m in my house and scared,” said Amoy Wellington, a 51-year-old cashier who lives in Top Hill, a rural farming community in Jamaica’s southern St. Elizabeth parish. “It’s a disaster.”

A man walks near damaged vehicles after devastating floods swept through the town after Hurricane Beryl passed off the Venezuelan coast, in Cumanacoa, Venezuela. Photo: REUTERS

A woman died in Jamaica’s Hanover parish after a tree fell on her home, Richard Thompson, acting director general at Jamaica’s disaster agency said in an interview on local news.

Nearly a thousand Jamaicans were in shelters by Wednesday evening, Thompson added.

The island’s main airports were closed and streets were mostly empty after Prime Minister Andrew Holness issued a nationwide curfew for Wednesday.

“We can do as much as we can do, as (is) humanly possible, and we leave the rest in the hands of God,” Holness said earlier on Wednesday, urging residents in vulnerable areas to evacuate.

The loss of life and damage wrought by Beryl underscores the consequences of a warmer Atlantic Ocean, which scientists cite as a telltale sign of human-caused climate change fueling extreme weather that differs from past experience.

Ralph Gonsalves, prime minister of St. Vincent and the Grenadines, one of the hardest-hit areas in the eastern Caribbean, said in a radio interview that the country’s Union Island was “flattened” by Beryl.

“Everybody is homeless … It is going to be a Herculean effort to rebuild.”

Scattered debris and houses with missing roofs are seen in a drone photograph after Hurricane Beryl passed the island of Petite Martinique, Grenada. Photo: REUTERS

Speaking to state media, Nerissa Gittens-McMillan, permanent secretary at St. Vincent and the Grenadines’ agriculture ministry, warned of possible food shortages after 50% of the country’s plantain and banana crops were lost, with significant losses also to root crops and vegetables, Reuters reported.

Power outages were widespread across Jamaica, while some roads near the coast were washed out.

By Wednesday evening, the eye of the spiraling hurricane was located about 161 km west of Kingston, according to the U.S. National Hurricane Center (NHC), as the storm’s core headed toward the Cayman Islands, where hurricane conditions were expected late tonight.

Beryl is packing maximum sustained winds of over 200 kilometers per hour.


RELATED STORIES

Afghanistan a victim of climate change, says Muttaqi

Heat wave kills at least 56 in India, nearly 25,000 heat stroke cases, from March-May

Continue Reading
Advertisement
Advertisement
Advertisement

Trending

Copyright © 2022 Ariana News. All rights reserved!