Tag Archives: Worldwide

We now know how much ice Antarctica has lost in the last 25 years – three trillion tonnes


Antarctica’s ice sheet is melting at a rapidly increasing rate, according to a new report by a team of 80 scientists who have analyzed satellite imagery of the region.

Antarctica is the largest ice sheet on Earth and almost 220 billion tonnes of it is melting into the ocean each year. That is pushing up global sea levels by 0.6mm annually, a three-fold increase since the last assessment in 2012.

The speed that the ice melts is a key indicator of climate change. And it has grave implications for low-lying countries such as the Solomon Islands and the Maldives, suggesting they have less time to construct future defences against the rising ocean.

Warmer waters

The study – known as the Ice Sheet Mass Balance Inter-Comparison Exercise – is the compilation of recent measurements of Antarctic ice loss, using satellite imagery to assess the height and weight of the ice, as well as the speed that it is moving towards the water.

The differences between the studies are reconciled to produce the most definitive possible set of data. The Imbie study is led by Andrew Shepherd, Professor of Earth Observation and Director of the NERC Centre for Polar Observation and Modelling.

“What we can say is that it’s too warm for Antarctica today. It’s about half a degree Celsius warmer than the continent can withstand and it’s melting about five metres of ice from its base each year, and that’s what’s triggering the sea-level contribution that we’re seeing,” he told BBC News .

Rising sea levels are a particular concern to areas of high population density in coastal areas, where sea levels play a role in flooding and shoreline erosion. It also means that storms cause more damage as surges of water push further inland than they have done previously.

Greenhouse gas emissions and global warming are the main causes of rising sea levels. Almost 200 countries agreed on the need to cut greenhouse gas emissions at the signing of the Paris climate agreement, and committed to keeping global temperatures ‘well below’ 2°C above pre-industrial times.

Strong compliance with the Paris Agreement is one way of helping control the speed of the melting of the Antarctic ice sheet.

Jahda Swanborough, Lead, Environmental Initiatives at the World Economic Forum, said: “News that the world’s largest ice sheet is melting more rapidly is a loud wake-up call. This is a classic example of a global commons challenge – the consequences of a melting Antarctic ice sheet have the potential to affect most people on the planet. We share responsibility for our climate system and need to increase our collective climate ambition.”

SOURCE: World Economic Forum

By Briony Harris
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Why money bearing face of Dead People?


(Dollar)

(Eruo)

I have been wondering about this for many years, since i was 10, now i have come to realise it finally and i wanna ask you guys why is it that money bears the face of dead people instead of living people?.

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Islamic State Group has more fighters worldwide than al Qaeda at its height


image

“We judge that ISIL is training and attempting to deploy operatives for further attacks,” Brennan said at a hearing just days after a gunman, believed inspired by Islamic State, killed 49 people in Orlando, Florida.

Islamic State militants have tens of thousands of fighters around the world, a far greater number than al Qaeda at its height, John Brennan , director of the Central Intelligence Agency, said on Thursday.
The militant group’s terrorism capability and global reach were not diminished, despite gains against it on the battlefield, he said at a rare public hearing of the Senate Intelligence Committee.
“We judge that ISIS is training and attempting to deploy operatives for further attacks, ” Brennan said at a hearing just days after a gunman, believed inspired by Islamic State, killed 49 people in
Orlando, Florida .
Brennan told the panel the CIA had not yet found direct links between the Orlando shooter, Omar Mateen , and any international terrorist organization.
Islamic State will likely change its strategies to make up for battlefield losses and constraints on its finances, he said, and it would probably rely more on “guerrilla tactics ,” including high-profile attacks outside territory it holds in Iraq and Syria.
“The resources needed for terrorism are very modest, and the group would have to suffer even heavier losses of territory, manpower and money for its terrorist capacity to decline significantly ,” he said.
The CIA is concerned about the growth of Libya as a base of operations for Islamic State militants, who had 5,000-8,000 fighters there, although the number of its fighters in Iraq and Syria had dropped to 18,000 to 22,000 from 19,000 to 25,000.
“I am concerned about the growth of Libya as another area that could serve as the basis for ISIL to carry out attacks inside of Europe… that is very concerning, ” Brennan said, using an alternative acronym for the Islamic State militant group.
Months after Islamic State attacks that caused mass casualties in Paris and Brussels, Brennan said European Union countries were still not where they needed to be in terms of intelligence sharing.
The CIA and the European Union’s Counter-Terrorism Group have been discussing ways to improve the sharing of intelligence on terrorist threats in the wake of the attacks, Brennan said.
Questioned about the broader crisis, Brennan told lawmakers he believed the government of Syrian President Bashar al-Assad had been strengthened with Russia’s support.
“A year ago, (Assad) was on his back foot as the opposition forces were carrying out operations that were really degrading the Syrian military. He is in a stronger position than he was in June of last year” as a result of Russian support, Brennan said.

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Source: Pulse