A version of this article first appeared in March 2020
Every time it rains in the UAE, some residents are quick to speculate that the wet weather was caused by the country’s cloud-seeding programme.
But even academics who have been working on rain-enhancement techniques for years admit that they still do not fully understand how best to encourage the heavens to open.
The UAE has recently been hit by a barrage of bad weather, with downpours seen in Al Ain, Baniyas and the east coast in Ras Al Khaimah and Fujairah, while there was rain in Abu Dhabi and flooding in Ghantoot at the beginning of July.
What is cloud seeding?
First of all, it is not nearly as simple as sending up planes to inject chemicals into clouds.
“Cloud seeding is a very complicated operation that needs a lot of scientific investigation to really understand the fundamentals of it,” said Lulin Xue, chief scientist at the Hua Xin Chuang Zhi Science and Technology group in China, who is carrying out research on cloud seeding in the UAE.
“Especially for the convective cloud [formed by the process of warmer air rising], the cloud itself is very dynamic, which means if you change certain things of the cloud, it can have consequences that are very complicated to understand and using observation itself, it’s very difficult to quantify these effects.
“We try to use experiments both in the laboratory and in models to really understand what's going on and then we can translate that knowledge into operation and help the UAE's cloud seeding.”
How effective is cloud seeding?
One of the major problems, Mr Lulin said, is that no two clouds are the same.
Clouds that form over mountains are different from those that appear over low-lying areas, meaning they react differently to cloud-seeding efforts.
The size of the seeding particles — usually consisting of salt crystals — can have an effect on rainfall, while the quantity of the material also has a bearing.
Delivering more material into clouds, however, does not necessarily translate into more rain.
In fact, the whole process can backfire, meaning less rain would fall than would have otherwise occurred if there had been no intervention.
Scientists are working on complicated computer simulations to better understand the optimum intervention for different cloud types.
However, they are unsure if they will ever fully master cloud seeding, not least because they have no way of knowing how much extra rain they have helped produce.
“I don't know how the technology will advance in the near future,” said Mr Lulin, who has been conducting research on rain-enhancement methods for around a decade.
“But in the foreseeable future I would say it’s very difficult to completely quantify and completely understand.”
How does cloud seeding in the UAE work?
Mr Lulin said the UAE has particularly “complicated” clouds.
“UAE clouds, when they develop, are harder to predict because you have so many components to fit in,” he said.
“If the cloud forms close to a mountain, they are static, and you can observe them more carefully.
“The moving cloud here … it's so complicated. We also have a lot of sea salt, aerosol and dust. These affect how clouds form and develop, in ways which may not be so obvious.
“So with these complications, we do need a lot more effort to understand.”
Cloud seeding has been going on in the Emirates for decades. It is hoped that within 18 months the work of Mr Lulin and others will provide a more comprehensive understanding of the process in the country.
But for now, the scientist is reluctant to put a figure on how effective the research is, or how much extra rain the programme produces.
He said storms like the ones seen in the UAE in early January, which caused widespread flooding, were not caused by cloud seeding.
“In my opinion, it is difficult for just cloud seeding alone to generate huge amounts of precipitation,” he said.
“It must be natural conditions that are suitable. Maybe cloud seeding can enhance a bit of that, but how much, we don’t know.”
Not all countries have the same problems as the UAE, which is usually arid.
Edward Graham, a meteorologist at the University of the Highlands and Islands in the UK, is based on Stornoway on the Isle of Lewis, off the north-west coast of mainland Scotland.
There, it rains three days out of every four and it is getting even wetter, for reasons that have yet to be understood.
“If you’re feeling it’s a little too dry here, a little bit too sunny, I’m certainly feeling it’s a little bit too wet in Scotland,” Dr Graham told delegates.
“We have something you want, you have something we want, so let’s do some business.”
The specs: 2017 Dodge Ram 1500 Laramie Longhorn
Price, base / as tested: Dhxxx
Engine: 5.7L V8
Transmission: Eight-speed automatic
Power: 395hp @ 5,600rpm
Torque: 556Nm @ 3,950rpm
Fuel economy, combined: 12.7L / 100km
It's Monty Python's Crashing Rocket Circus
To the theme tune of the famous zany British comedy TV show, SpaceX has shown exactly what can go wrong when you try to land a rocket.
The two minute video posted on YouTube is a compilation of crashes and explosion as the company, created by billionaire Elon Musk, refined the technique of reusable space flight.
SpaceX is able to land its rockets on land once they have completed the first stage of their mission, and is able to resuse them multiple times - a first for space flight.
But as the video, How Not to Land an Orbital Rocket Booster, demonstrates, it was a case if you fail, try and try again.
Islamophobia definition
A widely accepted definition was made by the All Party Parliamentary Group on British Muslims in 2019: “Islamophobia is rooted in racism and is a type of racism that targets expressions of Muslimness or perceived Muslimness.” It further defines it as “inciting hatred or violence against Muslims”.
The distance learning plan
Spring break will be from March 8 - 19
Public school pupils will undergo distance learning from March 22 - April 2. School hours will be 8.30am to 1.30pm
Staff will be trained in distance learning programmes from March 15 - 19
Teaching hours will be 8am to 2pm during distance learning
Pupils will return to school for normal lessons from April 5
How does ToTok work?
The calling app is available to download on Google Play and Apple App Store
To successfully install ToTok, users are asked to enter their phone number and then create a nickname.
The app then gives users the option add their existing phone contacts, allowing them to immediately contact people also using the application by video or voice call or via message.
Users can also invite other contacts to download ToTok to allow them to make contact through the app.
Shooting Ghosts: A U.S. Marine, a Combat Photographer, and Their Journey Back from War by Thomas J. Brennan and Finbarr O’Reilly
Avatar: Fire and Ash
Director: James Cameron
Starring: Sam Worthington, Sigourney Weaver, Zoe Saldana
Rating: 4.5/5
England Test squad
Ben Stokes (captain), Joe Root, James Anderson, Jonny Bairstow, Stuart Broad, Harry Brook, Zak Crawley, Ben Foakes, Jack Leach, Alex Lees, Craig Overton, Ollie Pope, Matthew Potts
The specs
Engine: 4.0-litre, six-cylinder
Transmission: six-speed manual
Power: 395bhp
Torque: 420Nm
Price: from Dh321,200
On sale: now
Profile box
Company name: baraka
Started: July 2020
Founders: Feras Jalbout and Kunal Taneja
Based: Dubai and Bahrain
Sector: FinTech
Initial investment: $150,000
Current staff: 12
Stage: Pre-seed capital raising of $1 million
Investors: Class 5 Global, FJ Labs, IMO Ventures, The Community Fund, VentureSouq, Fox Ventures, Dr Abdulla Elyas (private investment)
RESULT
Aston Villa 1
Samatta (41')
Manchester City 2
Aguero (20')
Rodri (30')
When is VAR used?
• Goals
• Penalty decisions
• Direct red-card incidents
• Mistaken identity
Gully Boy
Director: Zoya Akhtar
Producer: Excel Entertainment & Tiger Baby
Cast: Ranveer Singh, Alia Bhatt, Kalki Koechlin, Siddhant Chaturvedi
Rating: 4/5 stars
Salah in numbers
€39 million: Liverpool agreed a fee, including add-ons, in the region of €39m (nearly Dh176m) to sign Salah from Roma last year. The exchange rate at the time meant that cost the Reds £34.3m - a bargain given his performances since.
13: The 25-year-old player was not a complete stranger to the Premier League when he arrived at Liverpool this summer. However, during his previous stint at Chelsea, he made just 13 Premier League appearances, seven of which were off the bench, and scored only twice.
57: It was in the 57th minute of his Liverpool bow when Salah opened his account for the Reds in the 3-3 draw with Watford back in August. The Egyptian prodded the ball over the line from close range after latching onto Roberto Firmino's attempted lob.
7: Salah's best scoring streak of the season occurred between an FA Cup tie against West Brom on January 27 and a Premier League win over Newcastle on March 3. He scored for seven games running in all competitions and struck twice against Tottenham.
3: This season Salah became the first player in Premier League history to win the player of the month award three times during a term. He was voted as the division's best player in November, February and March.
40: Salah joined Roger Hunt and Ian Rush as the only players in Liverpool's history to have scored 40 times in a single season when he headed home against Bournemouth at Anfield earlier this month.
30: The goal against Bournemouth ensured the Egyptian achieved another milestone in becoming the first African player to score 30 times across one Premier League campaign.
8: As well as his fine form in England, Salah has also scored eight times in the tournament phase of this season's Champions League. Only Real Madrid's Cristiano Ronaldo, with 15 to his credit, has found the net more often in the group stages and knockout rounds of Europe's premier club competition.
In numbers
- Number of children under five will fall from 681 million in 2017 to 401m in 2100
- Over-80s will rise from 141m in 2017 to 866m in 2100
- Nigeria will become the world’s second most populous country with 791m by 2100, behind India
- China will fall dramatically from a peak of 2.4 billion in 2024 to 732 million by 2100
- an average of 2.1 children per woman is required to sustain population growth
The%20specs
%3Cp%3E%3Cstrong%3EPowertrain%3A%20%3C%2Fstrong%3ESingle%20electric%20motor%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E201hp%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E310Nm%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3ESingle-speed%20auto%0D%3Cbr%3E%3Cstrong%3EBattery%3A%20%3C%2Fstrong%3E53kWh%20lithium-ion%20battery%20pack%20(GS%20base%20model)%3B%2070kWh%20battery%20pack%20(GF)%0D%3Cbr%3E%3Cstrong%3ETouring%20range%3A%20%3C%2Fstrong%3E350km%20(GS)%3B%20480km%20(GF)%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh129%2C900%20(GS)%3B%20Dh149%2C000%20(GF)%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%3C%2Fstrong%3E%20Now%3C%2Fp%3E%0A
The biog
Name: Fareed Lafta
Age: 40
From: Baghdad, Iraq
Mission: Promote world peace
Favourite poet: Al Mutanabbi
Role models: His parents
Jetour T1 specs
Engine: 2-litre turbocharged
Power: 254hp
Torque: 390Nm
Price: From Dh126,000
Available: Now
SPECS
%3Cp%3E%3Cstrong%3EEngine%3A%20%3C%2Fstrong%3E4-litre%20flat-six%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E525hp%20(GT3)%2C%20500hp%20(GT4)%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E465Nm%20(GT3)%2C%20450Nm%20(GT4)%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3ESeven-speed%20automatic%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh944%2C000%20(GT3)%2C%20Dh581%2C700%20(GT4)%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%20%3C%2Fstrong%3ENow%0D%3Cbr%3E%3C%2Fp%3E%0A
Killing of Qassem Suleimani
KILLING OF QASSEM SULEIMANI
Going grey? A stylist's advice
If you’re going to go grey, a great style, well-cared for hair (in a sleek, classy style, like a bob), and a young spirit and attitude go a long way, says Maria Dowling, founder of the Maria Dowling Salon in Dubai.
It’s easier to go grey from a lighter colour, so you may want to do that first. And this is the time to try a shorter style, she advises. Then a stylist can introduce highlights, start lightening up the roots, and let it fade out. Once it’s entirely grey, a purple shampoo will prevent yellowing.
“Get professional help – there’s no other way to go around it,” she says. “And don’t just let it grow out because that looks really bad. Put effort into it: properly condition, straighten, get regular trims, make sure it’s glossy.”
The%20specs
%3Cp%3E%3Cstrong%3EEngine%3A%3C%2Fstrong%3E%206.5-litre%20V12%20and%20three%20electric%20motors%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E1%2C015hp%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E1%2C500Nm%20(estimate)%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%3C%2Fstrong%3E%20Eight-speed%20dual-clutch%20auto%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%3C%2Fstrong%3E%20Early%202024%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh2%20million%20(estimate)%3C%2Fp%3E%0A
UAE currency: the story behind the money in your pockets
Ad Astra
Director: James Gray
Stars: Brad Pitt, Tommy Lee Jones
Five out of five stars
COMPANY%20PROFILE
%3Cp%3E%3Cstrong%3ECompany%3A%3C%2Fstrong%3E%20Eco%20Way%3Cbr%3E%3Cstrong%3EStarted%3A%3C%2Fstrong%3E%20December%202023%3Cbr%3E%3Cstrong%3EFounder%3A%3C%2Fstrong%3E%20Ivan%20Kroshnyi%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20Dubai%2C%20UAE%3Cbr%3E%3Cstrong%3EIndustry%3A%3C%2Fstrong%3E%20Electric%20vehicles%3Cbr%3E%3Cstrong%3EInvestors%3A%3C%2Fstrong%3E%20Bootstrapped%20with%20undisclosed%20funding.%20Looking%20to%20raise%20funds%20from%20outside%3Cbr%3E%3C%2Fp%3E%0A
Kanguva
Director: Siva
Stars: Suriya, Bobby Deol, Disha Patani, Yogi Babu, Redin Kingsley
SPEC%20SHEET
%3Cp%3E%3Cstrong%3EProcessor%3A%3C%2Fstrong%3E%20Apple%20M2%2C%208-core%20CPU%2C%20up%20to%2010-core%20CPU%2C%2016-core%20Neural%20Engine%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EDisplay%3A%3C%2Fstrong%3E%2013.6-inch%20Liquid%20Retina%2C%202560%20x%201664%2C%20224ppi%2C%20500%20nits%2C%20True%20Tone%2C%20wide%20colour%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EMemory%3A%3C%2Fstrong%3E%208%2F16%2F24GB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStorage%3A%3C%2Fstrong%3E%20256%2F512GB%20%2F%201%2F2TB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EI%2FO%3A%3C%2Fstrong%3E%20Thunderbolt%203%20(2)%2C%203.5mm%20audio%2C%20Touch%20ID%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EConnectivity%3A%3C%2Fstrong%3E%20Wi-Fi%206%2C%20Bluetooth%205.0%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EBattery%3A%3C%2Fstrong%3E%2052.6Wh%20lithium-polymer%2C%20up%20to%2018%20hours%2C%20MagSafe%20charging%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ECamera%3A%3C%2Fstrong%3E%201080p%20FaceTime%20HD%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EVideo%3A%3C%2Fstrong%3E%20Support%20for%20Apple%20ProRes%2C%20HDR%20with%20Dolby%20Vision%2C%20HDR10%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EAudio%3A%3C%2Fstrong%3E%204-speaker%20system%2C%20wide%20stereo%2C%20support%20for%20Dolby%20Atmos%2C%20Spatial%20Audio%20and%20dynamic%20head%20tracking%20(with%20AirPods)%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EColours%3A%3C%2Fstrong%3E%20Silver%2C%20space%20grey%2C%20starlight%2C%20midnight%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EIn%20the%20box%3A%3C%2Fstrong%3E%20MacBook%20Air%2C%2030W%20or%2035W%20dual-port%20power%20adapter%2C%20USB-C-to-MagSafe%20cable%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20From%20Dh4%2C999%3C%2Fp%3E%0A
Paatal Lok season two
Directors: Avinash Arun, Prosit Roy
Stars: Jaideep Ahlawat, Ishwak Singh, Lc Sekhose, Merenla Imsong
Rating: 4.5/5