Antarctica conjures images of an unbroken white wilderness, but blooms of algae are giving parts of the frozen continent an increasingly green tinge.
Warming temperatures due to climate change are helping the formation and spread of "green snow" and it is becoming so prolific in places that it is even visible from space, according to new research published on Wednesday.
While the presence of algae in Antarctica was noted by long-ago expeditions, such as the one undertaken by British explorer Ernest Shackleton, its full extent was unknown.
Now, using data collected over two years by the European Space Agency's Sentinel 2 satellite, together with on the ground observations, a research team from the University of Cambridge and the British Antarctic Survey have created the first map of the algae blooms on the Antarctic Peninsula coast.
"We now have a baseline of where the algal blooms are and we can see whether the blooms will start increasing as the models suggest in the future," Matt Davey of the University of Cambridge's Department of Plant Sciences told Reuters.
Mosses and lichens are considered the dominant photosynthetic organisms in Antarctica - but the new mapping found 1,679 separate algal blooms that are a key component in the continent's ability to capture carbon dioxide from the atmosphere.
"The algal blooms in Antarctica are equivalent to about the amount of carbon that's being omitted by 875,000 average UK petrol car journeys," Davey said. "That seems a lot but in terms of the global carbon budget, it's insignificant.
"It does take up carbon from the atmosphere but it won't make any serious dent in the amount of carbon dioxide being put in the atmosphere at the moment."
Green is not the only splash of colour in Antarctica. Researchers are now planning similar studies on red and orange algae, although that is proving harder to map from space.
Drishyam 2
Directed by: Jeethu Joseph
Starring: Mohanlal, Meena, Ansiba, Murali Gopy
Rating: 4 stars
Key findings of Jenkins report
- Founder of the Muslim Brotherhood, Hassan al Banna, "accepted the political utility of violence"
- Views of key Muslim Brotherhood ideologue, Sayyid Qutb, have “consistently been understood” as permitting “the use of extreme violence in the pursuit of the perfect Islamic society” and “never been institutionally disowned” by the movement.
- Muslim Brotherhood at all levels has repeatedly defended Hamas attacks against Israel, including the use of suicide bombers and the killing of civilians.
- Laying out the report in the House of Commons, David Cameron told MPs: "The main findings of the review support the conclusion that membership of, association with, or influence by the Muslim Brotherhood should be considered as a possible indicator of extremism."
What sanctions would be reimposed?
Under ‘snapback’, measures imposed on Iran by the UN Security Council in six resolutions would be restored, including:
- An arms embargo
- A ban on uranium enrichment and reprocessing
- A ban on launches and other activities with ballistic missiles capable of delivering nuclear weapons, as well as ballistic missile technology transfer and technical assistance
- A targeted global asset freeze and travel ban on Iranian individuals and entities
- Authorisation for countries to inspect Iran Air Cargo and Islamic Republic of Iran Shipping Lines cargoes for banned goods
Best Foreign Language Film nominees
Capernaum (Lebanon)
Cold War (Poland)
Never Look Away (Germany)
Roma (Mexico)
Shoplifters (Japan)
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Killing of Qassem Suleimani
The years Ramadan fell in May
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Sheffield United 2 Bournemouth 1
United: Sharp (45 2'), Lundstram (84')
Bournemouth: C Wilson (13')
Man of the Match: Jack O’Connell (Sheffield United)
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