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Climate Change

Antarctica glacier melting means terrible news for global sea level rise

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The Thwaites Glacier in Antarctica, also known as the Doomsday Glacier, is melting in unexpected ways that could lead to its rapid collapse, a new study has revealed.

Sometimes called the Doomsday Glacier as its collapse could destabilize other glaciers in West Antarctica and lead to a potential 3 meter rise in sea level, scientists.

Two teams of researchers have used an underwater robot and drilled deep holes into the Florida-sized Thwaites Glacier to study its melting patterns in unprecedented detail, Space.com reported.

The researchers from the International Thwaites Glacier Collaboration discovered that while the overall melting of ice is slower than expected, melting in cracks and crevasses and other vulnerable areas is proceeding much more rapidly.

“Our results are a surprise but the glacier is still in trouble,” British Antarctic Survey oceanographer and research team member Peter Davis, said in a statement.

Thwaites Glacier is located in West Antarctica and covers 192,000 square kilometers. One part of the glacier juts out into the ocean and holds back the rest of the ice-mass that lies on bedrock, thus preventing it from slipping from the land to the sea.

Because the Thwaites Glacier slopes down towards the sea, it is particularly susceptible to climate and ocean temperature changes that could lead to rapid and irreversible ice loss. The collapse of Thwaites would cause seawater levels and destabilize neighboring glaciers.

The new data provides a clearer picture of the changes taking place under Thwaites, revealing that ice in cracks across the glacier is melting quickly. Melting in cracks and crevasses is potentially dangerous because as water funnels through them, heat and salt can be transferred into the ice. This can result in the widening of these crevasses, causing large rifts in the ice shelf. Cracks and crevasses weren’t the only area of the shelf experiencing rapid melting, however.

The scientists also found that melting across the bottom of the ice shelf has created a staircase-like formation. In these staircase-shaped regions, called terraces, the ice of Thwaites is also melting rapidly.

The melting of ice in these terraces, cracks, and crevasses may become major factors in the loss of ice from Thwaites in the future, especially as major rifts progress across the ice shelf. This means these features may become the primary trigger for ice shelf collapse at Thwaites.

Climate Change

Afghanistan climate and housing challenges highlighted at World Urban Forum in Baku

Speakers also urged developed nations to expand support for vulnerable countries dealing with climate change, rapid urbanization and housing shortages.

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The World Urban Forum, which opened Sunday in Baku, Azerbaijan, continued Tuesday with a special session focused on Afghanistan and the country’s growing urban and environmental challenges.

Ariana News correspondent Naweed Bahar, reporting from Baku, said the panel is expected to feature remarks from the head of UN-Habitat in Afghanistan and will examine key issues affecting the country.

According to forum reports, discussions will focus on the impact of climate change in Afghanistan, the social and economic pressures caused by the return of millions of migrants, and the country’s worsening housing crisis.

An Afghan delegation led by officials from the National Environmental Protection Agency is also participating in the forum and is expected to hold meetings with representatives of several countries and international organizations.

Talks are expected to include environmental projects, international assistance for climate-related challenges, and possible cooperation to help address Afghanistan’s housing and urban development needs.

During the forum’s general session on Monday, several world leaders called on the United Nations to strengthen efforts toward creating safe, sustainable and accessible cities around the world.

Speakers also urged developed nations to expand support for vulnerable countries dealing with climate change, rapid urbanization and housing shortages.

The World Urban Forum will continue through May 23, with a series of sessions dedicated to climate change, urban development and housing issues affecting vulnerable nations globally.

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Climate Change

Iran war is supercharging the clean energy transition, UN climate chief says

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The Iran war is “supercharging” the world’s shift to renewable energy, as countries scramble to reduce their exposure to volatile oil and ​gas markets, the U.N. climate secretary said on Thursday.

The U.S.-Israeli war ‌with Iran has upended oil and gas supplies, prompting some countries to ration fuel and others to roll out subsidies and tax cuts to shield consumers from surging prices, Reuters reported.

Early signs indicate the ​war, which began two months ago, is speeding up some countries’ low-carbon ​transition.

Demand for rooftop solar systems across Europe has surged, while countries ⁠including Pakistan have reported a jump in electric vehicle sales.

Chinese President Xi Jinping called this month ​to speed up the construction of a new energy system to safeguard energy ​security, emphasising hydropower development and the expansion of nuclear power.

“Those who’ve fought to keep the world hooked on fossil fuels are inadvertently supercharging the global renewables boom,” said Simon Stiell, Executive ​Secretary of the U.N.’s climate secretariat UNFCCC.

“Renewables offer safer, cheaper, cleaner energy ​that can’t be held captive by narrow shipping straits, or global conflicts,” Stiell told a meeting ‌of ⁠government officials at the International Energy Agency in Paris.

However, the war has also prompted some nations to increase the use of highly polluting coal or furnace oil-based power generation as they struggle to replace gas from the Middle East.

Turkey’s Climate Minister ​Murat Kurum – who will ​preside over the ⁠U.N.’s COP31 climate summit this year – said fossil fuel dependency now topped the global political agenda.

“The best way to protect ​citizens from the violent convulsions of global energy markets is ​to accelerate ⁠the clean-energy transition,” he said in a statement after the IEA event.

Around 60 governments including Brazil, Germany, Canada and Nigeria, met in Colombia this week for a summit to ⁠discuss how ​to phase out fossil fuels.

Conference hosts Colombia and ​the Netherlands said on Thursday countries had agreed to continue working, over the next year, on ​how to do this in their trade systems.

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Climate Change

Uzbek president emphasizes Afghanistan’s role in regional water cooperation

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At a regional water summit in Astana on Wednesday, Uzbekistan’s President Shavkat Mirziyoyev emphasized the importance of involving Afghanistan in broader regional cooperation on water, climate, and environmental issues.

He underlined that Afghanistan’s participation is essential for effective management of shared water resources in Central Asia, particularly in the Aral Sea basin, where upstream and downstream countries are closely interconnected.

The Uzbek president also called for increased international support for environmental protection and land reclamation projects inside Afghanistan.

He further stressed that long-term stability in the region will depend on the development of a legal framework governing water allocation that clearly defines the rights and obligations of all countries in the basin.

Uzbekistan’s authorities have expressed concern over the construction of the Qosh Tepa canal in Afghanistan, saying it could “radically change the water regime and balance” in Central Asia.

The Islamic Emirate of Afghanistan (IEA), however, has said that Uzbekistan will not be harmed by the canal.

 

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