Climate “tipping points” can be better understood and predicted using climate change data taken from the ancient past, research shows.
Current understanding of tipping points, in which the climate system exceeds a threshold beyond which large and often irreversible changes occur, is limited. This is because such an event has not occurred in recent times and certainly not since scientists started to record climate data.
Earth system models, routinely used to predict climate, are taken from our understanding of the physical, chemical and biological processes that work together to shape our planet’s environment.
Scientists know that these models do not provide a complete picture, however, because they fail to simulate known climate events from the past.
In a new study published in Proceedings of the National Academy of Sciences, researchers at the University of Birmingham and the University of Bristol demonstrate how knowledge of climate reconstructions from thousands of years ago can be used to fine-tune Earth system models to provide a more accurate understanding of climate system thresholds.
“Climate modelling is the only way we have to predict future climate change, but when models are developed, they are only evaluated with weather observations from the past 150 years or so. This means we have no way to verify their predictions of potential abrupt change — the risks of which are only likely to increase as the planet warms,” said senior author Dr Peter Hopcroft of the University of Birmingham’s School of Geography, Earth and Environmental Sciences.
“Palaeoclimate records of abrupt climate changes from the deeper past allow us overcome this problem.”
In the study, the team focused on one key example: the “greening” and subsequent rapid desertification of the Sahara, which took place in the mid-Holocene period, about 6,000 years ago.
By feeding data from fossil pollen and sedimentary records into a typical climate model, they were able to show how the model could then predict the Sahara’s transformation into a savannah, which was marked by increased plant coverage, expansion of lakes and, most importantly, increased rainfall.
The results were then independently compared with studies of marine sediment records from the region, showing how the model accurately captured a very rapid return to the desert conditions over the Sahara.
“We now need to apply these methods to other models to test how universal the results might be,” said Dr Hopcroft.
“But by demonstrating how paeleoclimate information can be used to improve the way models can simulate past abrupt climate change, we hope that we can begin to increase our confidence in future projections of abrupt events.”
Nepotism is the name of the game
Salman Khan’s father, Salim Khan, is one of Bollywood’s most legendary screenwriters. Through his partnership with co-writer Javed Akhtar, Salim is credited with having paved the path for the Indian film industry’s blockbuster format in the 1970s. Something his son now rules the roost of. More importantly, the Salim-Javed duo also created the persona of the “angry young man” for Bollywood megastar Amitabh Bachchan in the 1970s, reflecting the angst of the average Indian. In choosing to be the ordinary man’s “hero” as opposed to a thespian in new Bollywood, Salman Khan remains tightly linked to his father’s oeuvre. Thanks dad.
Women & Power: A Manifesto
Mary Beard
Profile Books and London Review of Books
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
Killing of Qassem Suleimani
National Editorial: Suleimani has been killed, now we must de-escalate
Mina Al Oraibi: Air strike casts a long shadow over the decade ahead
Matthew Levitt: Iran retains its ability to launch terror attacks
Damien McElroy: A CEO tasked with spreading Iran's influence
Hussein Ibish: Trump's order on solid constitutional ground
Simon Waldman: Cautious Israel keeping a low profile
AVOID SCAMMERS: TIPS FROM EMIRATES NBD
1. Never respond to e-mails, calls or messages asking for account, card or internet banking details
2. Never store a card PIN (personal identification number) in your mobile or in your wallet
3. Ensure online shopping websites are secure and verified before providing card details
4. Change passwords periodically as a precautionary measure
5. Never share authentication data such as passwords, card PINs and OTPs (one-time passwords) with third parties
6. Track bank notifications regarding transaction discrepancies
7. Report lost or stolen debit and credit cards immediately
THE BIO
Born: Mukalla, Yemen, 1979
Education: UAE University, Al Ain
Family: Married with two daughters: Asayel, 7, and Sara, 6
Favourite piece of music: Horse Dance by Naseer Shamma
Favourite book: Science and geology
Favourite place to travel to: Washington DC
Best advice you’ve ever been given: If you have a dream, you have to believe it, then you will see it.
The specs
Engine: 2.0-litre 4-cylturbo
Transmission: seven-speed DSG automatic
Power: 242bhp
Torque: 370Nm
Price: Dh136,814
The five new places of worship
Church of South Indian Parish
St Andrew's Church Mussaffah branch
St Andrew's Church Al Ain branch
St John's Baptist Church, Ruwais
Church of the Virgin Mary and St Paul the Apostle, Ruwais
While you're here
Cheryl Thompson: Stop the practice of blackface that's as Canadian as hockey
Kareem Shaheen: Alghabra outshines the racists who malign him
Kareem Shaheen: In Canada, I have finally found a home
MOUNTAINHEAD REVIEW
Starring: Ramy Youssef, Steve Carell, Jason Schwartzman
Director: Jesse Armstrong
Rating: 3.5/5
Kareem Shaheen on Canada
While you're here
Con Coughlin: To survive, Nato must renew its sense of common purpose
Gavin Esler: Nato summit failed for making news more than it made deals
Simon Waldman: Nato continues to be Ankara’s best security guarantor
NO OTHER LAND
Director: Basel Adra, Yuval Abraham, Rachel Szor, Hamdan Ballal
Stars: Basel Adra, Yuval Abraham
Rating: 3.5/5
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
While you're here
Gavin Esler: Will 2021 be Boris Johnson's worst year?
Thomas Harding: US relations with Europe could change
Brodie Owen: How England’s new lockdown rules work
While you're here
While you're here
While you're here
'The Ice Road'
Director: Jonathan Hensleigh
Stars: Liam Neeson, Amber Midthunder, Laurence Fishburne
2/5
While you're here
Hussein Ibish: Could it be game over for Donald Trump?
Joyce Karam: Trump's campaign thrown off balance
Trump tests positive: everything we know so far
Conflict, drought, famine
Estimates of the number of deaths caused by the famine range from 400,000 to 1 million, according to a document prepared for the UK House of Lords in 2024.
It has been claimed that the policies of the Ethiopian government, which took control after deposing Emperor Haile Selassie in a military-led revolution in 1974, contributed to the scale of the famine.
Dr Miriam Bradley, senior lecturer in humanitarian studies at the University of Manchester, has argued that, by the early 1980s, “several government policies combined to cause, rather than prevent, a famine which lasted from 1983 to 1985. Mengistu’s government imposed Stalinist-model agricultural policies involving forced collectivisation and villagisation [relocation of communities into planned villages].
The West became aware of the catastrophe through a series of BBC News reports by journalist Michael Buerk in October 1984 describing a “biblical famine” and containing graphic images of thousands of people, including children, facing starvation.
Band Aid
Bob Geldof, singer with the Irish rock group The Boomtown Rats, formed Band Aid in response to the horrific images shown in the news broadcasts.
With Midge Ure of the band Ultravox, he wrote the hit charity single Do They Know it’s Christmas in December 1984, featuring a string of high-profile musicians.
Following the single’s success, the idea to stage a rock concert evolved.
Live Aid was a series of simultaneous concerts that took place at Wembley Stadium in London, John F Kennedy Stadium in Philadelphia, the US, and at various other venues across the world.
The combined event was broadcast to an estimated worldwide audience of 1.5 billion.
Neighbourhood Watch
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Shelina Janmohamed: Why shouldn't a spouse be compensated fairly for housework?
Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality
The National Editorial: Is there much to celebrate on International Women's Day 2021?
Company%20Profile
Empty Words
By Mario Levrero
(Coffee House Press)
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Shelina Janmohamed: Why shouldn't a spouse be compensated fairly for housework?
Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality
Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'
While you're here
Kareem Shaheen: Even a pandemic could not unite today's America
Michele Wucker: The difference between a black swan and a grey rhino
Robert Matthews: Has flawed science and rushed research failed us?
Voy!%20Voy!%20Voy!
All%20The%20Light%20We%20Cannot%20See%20
The specs: 2018 Opel Mokka X
Price, as tested: Dh84,000
Engine: 1.4L, four-cylinder turbo
Transmission: Six-speed auto
Power: 142hp at 4,900rpm
Torque: 200Nm at 1,850rpm
Fuel economy, combined: 6.5L / 100km
Huroob Ezterari
Director: Ahmed Moussa
Starring: Ahmed El Sakka, Amir Karara, Ghada Adel and Moustafa Mohammed
Three stars
Killing of Qassem Suleimani
National Editorial: Suleimani has been killed, now we must de-escalate
Mina Al Oraibi: Air strike casts a long shadow over the decade ahead
Jack Moore: Why the assassination is such a monumental gamble
Damien McElroy: A CEO tasked with spreading Iran's influence
Hussein Ibish: Trump's order on solid constitutional ground
Simon Waldman: Cautious Israel keeping a low profile
The Voice of Hind Rajab
Starring: Saja Kilani, Clara Khoury, Motaz Malhees
Director: Kaouther Ben Hania
Rating: 4/5
SPEC%20SHEET%3A%20APPLE%20M3%20MACBOOK%20AIR%20(13%22)
Company Profile
Name: Thndr
Started: 2019
Co-founders: Ahmad Hammouda and Seif Amr
Sector: FinTech
Headquarters: Egypt
UAE base: Hub71, Abu Dhabi
Current number of staff: More than 150
Funds raised: $22 million
Company%20Profile
Read
Tree of Hell
Starring: Raed Zeno, Hadi Awada, Dr Mohammad Abdalla
Director: Raed Zeno
Rating: 4/5
MATCH INFO
Norwich 0
Watford 2 (Deulofeu 2', Gray 52')
Red card: Christian Kabasele (WatforD)
More on Yemen's civil war
Saeed Al Batati: How the war played a role in Africa's locust swarm
National Editorial: Thanking the UAE troops for protecting the country
National Editorial: Riyadh deal paves the way for peace in Yemen
National Editorial: The UAE a leader in giving humanitarian aid
If you go...
Flying
There is no simple way to get to Punta Arenas from the UAE, with flights from Dubai and Abu Dhabi requiring at least two connections to reach this part of Patagonia. Flights start from about Dh6,250.
Touring
Chile Nativo offers the amended Los Dientes trek with expert guides and porters who are met in Puerto Williams on Isla Navarino. The trip starts and ends in Punta Arenas and lasts for six days in total. Prices start from Dh8,795.
COMPANY%20PROFILE%20
Company name: Farmin
Date started: March 2019
Founder: Dr Ali Al Hammadi
Based: Abu Dhabi
Sector: AgriTech
Initial investment: None to date
Partners/Incubators: UAE Space Agency/Krypto Labs
LA LIGA FIXTURES
Friday Athletic Bilbao v Celta Vigo (Kick-off midnight UAE)
Saturday Levante v Getafe (5pm), Sevilla v Real Madrid (7.15pm), Atletico Madrid v Real Valladolid (9.30pm), Cadiz v Barcelona (midnight)
Sunday Granada v Huesca (5pm), Osasuna v Real Betis (7.15pm), Villarreal v Elche (9.30pm), Alaves v Real Sociedad (midnight)
Monday Eibar v Valencia (midnight)
The specs: 2018 Ducati SuperSport S
Price, base / as tested: Dh74,900 / Dh85,900
Engine: 937cc
Transmission: Six-speed gearbox
Power: 110hp @ 9,000rpm
Torque: 93Nm @ 6,500rpm
Fuel economy, combined: 5.9L / 100km
MATCH DETAILS
Chelsea 4
Jorginho (4 pen, 71 pen), Azpilicueta (63), James (74)
Ajax 4
Abraham (2 og), Promes (20). Kepa (35 og), van de Beek (55)
War 2
Director: Ayan Mukerji
Stars: Hrithik Roshan, NTR, Kiara Advani, Ashutosh Rana
Rating: 2/5
BAD%20BOYS%3A%20RIDE%20OR%20DIE
Champions parade (UAE timings)
7pm Gates open
8pm Deansgate stage showing starts
9pm Parade starts at Manchester Cathedral
9.45pm Parade ends at Peter Street
10pm City players on stage
11pm event ends
How much do leading UAE’s UK curriculum schools charge for Year 6?
- Nord Anglia International School (Dubai) – Dh85,032
- Kings School Al Barsha (Dubai) – Dh71,905
- Brighton College Abu Dhabi - Dh68,560
- Jumeirah English Speaking School (Dubai) – Dh59,728
- Gems Wellington International School – Dubai Branch – Dh58,488
- The British School Al Khubairat (Abu Dhabi) - Dh54,170
- Dubai English Speaking School – Dh51,269
*Annual tuition fees covering the 2024/2025 academic year
