As temperatures rise because of climate change, a new study has drawn an unexpected conclusion – Dubai may have become cooler in recent decades.
Contrasting with the global trend and with results from five other major Gulf cities analysed, the apparent fall in surface temperatures of built-up areas in Dubai has been credited to the expansion of green areas and water bodies. The land surface temperature (LST) – the temperature of the ground surface – in Dubai’s urban areas fell from about 52°C in 1998 to 51°C in 2013 and 49°C in 2023, according to the research.
The study’s lead author, Dr Shikha Patel, said it was “a bit surprising” to see cooling in Dubai when, over the same 25-year period, none of five other cities analysed showed an overall decrease. “Because the urban growth is quite similar, I thought it would be the same everywhere. Dubai’s results were different from all the other cities,” she said.
Cooling down
Temperatures in the study, published in January in the journal Annals of GIS (Geographic Information Systems) were calculated from satellite data measuring radiation emitted from the land surface. They represent a snapshot of summer temperatures averaged across similar built-up areas in Doha, Dubai, Kuwait City, Manama, Muscat and Riyadh.
As a measure of how hot the ground is to the touch, LST is not the same as the air temperature, which is the figure quoted in weather forecasts.
Nasa reports that land tends to heat up and cool down faster than the air. As a result, during daytime LST tends to be higher than the air temperature, although some studies, such as one in Sydney, found that during cooler days the situation could be reversed.
Dr Patel, of the Department of Architecture and Urban Planning at Qatar University, said that Dubai and Abu Dhabi were “doing great” when it came to ensuring that there was plenty of green cover. This, she said, along with increases in the area within Dubai covered by water, could explain the city’s apparent temperature reduction.
Vegetation can reduce temperatures by shading and evapotranspiration, where water is released by plants and soil, a process that uses energy and so has a cooling effect. The expansion of water areas in Dubai was, Dr Patel said, also likely to be a “big factor” in reducing the city’s temperatures.
“I think water bodies play an important part. Water bodies have consistently shown the lowest temperatures in all cities,” she said. “They have a lot of inland water bodies. For example, Dubai Creek, they have diverted the water to make an inland channel. It acts like a sink for temperatures.”
She cited the area of water near the Burj Khalifa tower as another feature that may have kept temperatures in check. If vegetation is introduced to keep down temperatures, Dr Patel recommended using native species, which are easier to maintain. “You often hear that Middle Eastern countries are importing plants from Australia,” she said. “They will not acclimatise. They will need a lot of manpower and water.”
In the research, Doha, Manama, Muscat and Riyadh experienced an increase in LST between 1998 and 2023, while in Kuwait the figures at the beginning and end of the study period were the same, albeit with a peak in the middle.
Titled "Comparative analysis of land cover changes on outdoor thermal comfort in Doha, Dubai, Kuwait City, Manama, Muscat, and Riyadh", the study found “increasing heat stress” in some cities, particularly Doha and Kuwait City, while “Dubai maintained stable comfort levels”.
“This study underscores the critical role of vegetation and sustainable urban planning in mitigating heat stress and enhancing outdoor thermal comfort across Gulf cities,” the researchers wrote.
A reduction in temperatures by maximising vegetation cover has been achieved elsewhere, notably in Medellín, the second-largest city in Colombia. There, efforts to create green corridors with many tens of thousands of plants and a reported 12,500 trees and green walls – walls covered with vegetation – have achieved local temperature reductions said to be about 2°C. The efforts have also been credited with helping wildlife and reducing air pollution.
Warm sands
While the Gulf cities study has a positive story to tell about the land surface temperatures in urban areas of Dubai, it does not suggest that the UAE as a whole is becoming cooler, because desert areas – which tend to be warmer than urban areas during daytime – are getting hotter.
Other research involving teams from Abu Dhabi's Khalifa University and Zayed University, has found that temperatures in the Middle East are increasing by about 0.45°C per decade, and a 2022 study by more than 20 scientists suggested that these rises would continue.
As well as contrasting with results from other Gulf cities, the findings from urban areas of Dubai run against what has been seen in cities in the tropics, said Dr Patel, who has undertaken a similar analysis of Bangalore in India. “In the tropics all the land cover types have been constantly increasing," she said.
Another researcher, Prof Emad Mushtaha, who chairs the Department of Architectural Engineering at the University of Sharjah, said that greenery could “drastically reduce” temperatures. “Definitely greenery can reduce the heat island as well as the solar radiation [that reaches the ground],” said Prof Mushtaha.
Aside from the effects on neighbourhoods of large-scale areas of vegetation or water, numerous “passive cooling” measures could, he said, lower the temperature of buildings. These include green roofs, covered by vegetation, and white surfaces.
In a 2021 paper in Sustainable Cities and Society, Prof Mushtaha and his co-authors found that a combination of factors, including increasing the height of neighbouring buildings, the presence of greenery and green roofs, could reduce surface temperatures by as much as 2.45°C. Similarly, research published last year highlighted the benefits in Dubai of reflective materials and vegetation, with the researchers concluding that neighbourhoods such as Jumeirah Lakes Towers offered examples of how design could limit temperature increases.
A separate study published in January in the Iranian Journal of Energy and Environment analysing the city of Kashan found that green areas and water bodies had a cooling effect on air temperatures. “At the site with vegetation and water ... air temperature at peak heat hours (12–3pm) was around 1.5°C cooler than the situation where there was no vegetation or water,” the authors wrote.
The years Ramadan fell in May
Jetour T1 specs
Engine: 2-litre turbocharged
Power: 254hp
Torque: 390Nm
Price: From Dh126,000
Available: Now
THE SPECS
Aston Martin Rapide AMR
Engine: 6.0-litre V12
Transmission: Touchtronic III eight-speed automatic
Power: 595bhp
Torque: 630Nm
Price: Dh999,563
UAE currency: the story behind the money in your pockets
Mohammed bin Zayed Majlis
The years Ramadan fell in May
CHATGPT%20ENTERPRISE%20FEATURES
%3Cp%3E%E2%80%A2%20Enterprise-grade%20security%20and%20privacy%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Unlimited%20higher-speed%20GPT-4%20access%20with%20no%20caps%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Longer%20context%20windows%20for%20processing%20longer%20inputs%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Advanced%20data%20analysis%20capabilities%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Customisation%20options%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Shareable%20chat%20templates%20that%20companies%20can%20use%20to%20collaborate%20and%20build%20common%20workflows%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Analytics%20dashboard%20for%20usage%20insights%3C%2Fp%3E%0A%3Cp%3E%E2%80%A2%20Free%20credits%20to%20use%20OpenAI%20APIs%20to%20extend%20OpenAI%20into%20a%20fully-custom%20solution%20for%20enterprises%3C%2Fp%3E%0A
Killing of Qassem Suleimani
The burning issue
The internal combustion engine is facing a watershed moment – major manufacturer Volvo is to stop producing petroleum-powered vehicles by 2021 and countries in Europe, including the UK, have vowed to ban their sale before 2040. The National takes a look at the story of one of the most successful technologies of the last 100 years and how it has impacted life in the UAE.
Read part four: an affection for classic cars lives on
Read part three: the age of the electric vehicle begins
Read part one: how cars came to the UAE
More from Neighbourhood Watch:
More on animal trafficking
Sholto Byrnes on Myanmar politics
More from Rashmee Roshan Lall
Read more about the coronavirus
CREW
%3Cp%3E%3Cstrong%3EDirector%3A%20%3C%2Fstrong%3ERajesh%20A%20Krishnan%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStarring%3A%20%3C%2Fstrong%3ETabu%2C%20Kareena%20Kapoor%20Khan%2C%20Kriti%20Sanon%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ERating%3A%3C%2Fstrong%3E%203.5%2F5%3C%2Fp%3E%0A
Electric scooters: some rules to remember
- Riders must be 14-years-old or over
- Wear a protective helmet
- Park the electric scooter in designated parking lots (if any)
- Do not leave electric scooter in locations that obstruct traffic or pedestrians
- Solo riders only, no passengers allowed
- Do not drive outside designated lanes
SPECS
Mini John Cooper Works Clubman and Mini John Cooper Works Countryman
Engine: two-litre 4-cylinder turbo
Transmission: nine-speed automatic
Power: 306hp
Torque: 450Nm
Price: JCW Clubman, Dh220,500; JCW Countryman, Dh225,500
The Specs
Price, base Dh379,000
Engine 2.9-litre, twin-turbo V6
Gearbox eight-speed automatic
Power 503bhp
Torque 443Nm
On sale now
More on Quran memorisation:
More on Quran memorisation:
Three ways to boost your credit score
Marwan Lutfi says the core fundamentals that drive better payment behaviour and can improve your credit score are:
1. Make sure you make your payments on time;
2. Limit the number of products you borrow on: the more loans and credit cards you have, the more it will affect your credit score;
3. Don't max out all your debts: how much you maximise those credit facilities will have an impact. If you have five credit cards and utilise 90 per cent of that credit, it will negatively affect your score.
More on animal trafficking
More on animal trafficking
Company Profile:
Name: The Protein Bakeshop
Date of start: 2013
Founders: Rashi Chowdhary and Saad Umerani
Based: Dubai
Size, number of employees: 12
Funding/investors: $400,000 (2018)
GAC GS8 Specs
Engine: 2.0-litre 4cyl turbo
Power: 248hp at 5,200rpm
Torque: 400Nm at 1,750-4,000rpm
Transmission: 8-speed auto
Fuel consumption: 9.1L/100km
On sale: Now
Price: From Dh149,900
Email sent to Uber team from chief executive Dara Khosrowshahi
From: Dara
To: Team@
Date: March 25, 2019 at 11:45pm PT
Subj: Accelerating in the Middle East
Five years ago, Uber launched in the Middle East. It was the start of an incredible journey, with millions of riders and drivers finding new ways to move and work in a dynamic region that’s become so important to Uber. Now Pakistan is one of our fastest-growing markets in the world, women are driving with Uber across Saudi Arabia, and we chose Cairo to launch our first Uber Bus product late last year.
Today we are taking the next step in this journey—well, it’s more like a leap, and a big one: in a few minutes, we’ll announce that we’ve agreed to acquire Careem. Importantly, we intend to operate Careem independently, under the leadership of co-founder and current CEO Mudassir Sheikha. I’ve gotten to know both co-founders, Mudassir and Magnus Olsson, and what they have built is truly extraordinary. They are first-class entrepreneurs who share our platform vision and, like us, have launched a wide range of products—from digital payments to food delivery—to serve consumers.
I expect many of you will ask how we arrived at this structure, meaning allowing Careem to maintain an independent brand and operate separately. After careful consideration, we decided that this framework has the advantage of letting us build new products and try new ideas across not one, but two, strong brands, with strong operators within each. Over time, by integrating parts of our networks, we can operate more efficiently, achieve even lower wait times, expand new products like high-capacity vehicles and payments, and quicken the already remarkable pace of innovation in the region.
This acquisition is subject to regulatory approval in various countries, which we don’t expect before Q1 2020. Until then, nothing changes. And since both companies will continue to largely operate separately after the acquisition, very little will change in either teams’ day-to-day operations post-close. Today’s news is a testament to the incredible business our team has worked so hard to build.
It’s a great day for the Middle East, for the region’s thriving tech sector, for Careem, and for Uber.
Uber on,
Dara
It Was Just an Accident
Director: Jafar Panahi
Stars: Vahid Mobasseri, Mariam Afshari, Ebrahim Azizi, Hadis Pakbaten, Majid Panahi, Mohamad Ali Elyasmehr
Rating: 4/5
More from Neighbourhood Watch
Five%20calorie-packed%20Ramadan%20drinks
%3Cp%3E%3Cstrong%3ERooh%20Afza%3C%2Fstrong%3E%0D%3Cbr%3E100ml%20contains%20414%20calories%0D%3Cbr%3E%3Cstrong%3ETang%20orange%20drink%3C%2Fstrong%3E%0D%3Cbr%3E100ml%20serving%20contains%20300%20calories%0D%3Cbr%3E%3Cstrong%3ECarob%20beverage%20mix%3C%2Fstrong%3E%0D%3Cbr%3E100ml%20serving%20contains%20about%20300%20calories%0D%3Cbr%3E%3Cstrong%3EQamar%20Al%20Din%20apricot%20drink%3C%2Fstrong%3E%0D%3Cbr%3E100ml%20saving%20contains%2061%20calories%0D%3Cbr%3E%3Cstrong%3EVimto%20fruit%20squash%3C%2Fstrong%3E%0D%3Cbr%3E100ml%20serving%20contains%2030%20calories%3C%2Fp%3E%0A
PROFILE OF SWVL
Started: April 2017
Founders: Mostafa Kandil, Ahmed Sabbah and Mahmoud Nouh
Based: Cairo, Egypt
Sector: transport
Size: 450 employees
Investment: approximately $80 million
Investors include: Dubai’s Beco Capital, US’s Endeavor Catalyst, China’s MSA, Egypt’s Sawari Ventures, Sweden’s Vostok New Ventures, Property Finder CEO Michael Lahyani
More from Neighbourhood Watch:
Essentials
The flights
Whether you trek after mountain gorillas in Rwanda, Uganda or the Congo, the most convenient international airport is in Rwanda’s capital city, Kigali. There are direct flights from Dubai a couple of days a week with RwandAir. Otherwise, an indirect route is available via Nairobi with Kenya Airways. Flydubai flies to Kinshasa in the Democratic Republic of Congo, via Entebbe in Uganda. Expect to pay from US$350 (Dh1,286) return, including taxes.
The tours
Superb ape-watching tours that take in all three gorilla countries mentioned above are run by Natural World Safaris. In September, the company will be operating a unique Ugandan ape safari guided by well-known primatologist Ben Garrod.
In the Democratic Republic of Congo, local operator Kivu Travel can organise pretty much any kind of safari throughout the Virunga National Park and elsewhere in eastern Congo.
Cricket World Cup League 2
UAE squad
Rahul Chopra (captain), Aayan Afzal Khan, Ali Naseer, Aryansh Sharma, Basil Hameed, Dhruv Parashar, Junaid Siddique, Muhammad Farooq, Muhammad Jawadullah, Muhammad Waseem, Omid Rahman, Rahul Bhatia, Tanish Suri, Vishnu Sukumaran, Vriitya Aravind
Fixtures
Friday, November 1 – Oman v UAE
Sunday, November 3 – UAE v Netherlands
Thursday, November 7 – UAE v Oman
Saturday, November 9 – Netherlands v UAE
German intelligence warnings
- 2002: "Hezbollah supporters feared becoming a target of security services because of the effects of [9/11] ... discussions on Hezbollah policy moved from mosques into smaller circles in private homes." Supporters in Germany: 800
- 2013: "Financial and logistical support from Germany for Hezbollah in Lebanon supports the armed struggle against Israel ... Hezbollah supporters in Germany hold back from actions that would gain publicity." Supporters in Germany: 950
- 2023: "It must be reckoned with that Hezbollah will continue to plan terrorist actions outside the Middle East against Israel or Israeli interests." Supporters in Germany: 1,250
Source: Federal Office for the Protection of the Constitution
Company%C2%A0profile
%3Cp%3ECompany%3A%20Zywa%3Cbr%3EStarted%3A%202021%3Cbr%3EFounders%3A%20Nuha%20Hashem%20and%20Alok%20Kumar%3Cbr%3EBased%3A%20UAE%3Cbr%3EIndustry%3A%20FinTech%3Cbr%3EFunding%20size%3A%20%243m%3Cbr%3ECompany%20valuation%3A%20%2430m%3C%2Fp%3E%0A
Specs%3A%202024%20McLaren%20Artura%20Spider
%3Cp%3E%3Cstrong%3EEngine%3A%3C%2Fstrong%3E%203.0-litre%20twin-turbo%20V6%20and%20electric%20motor%3Cbr%3E%3Cstrong%3EMax%20power%3A%3C%2Fstrong%3E%20700hp%20at%207%2C500rpm%3Cbr%3E%3Cstrong%3EMax%20torque%3A%3C%2Fstrong%3E%20720Nm%20at%202%2C250rpm%3Cbr%3E%3Cstrong%3ETransmission%3A%3C%2Fstrong%3E%20Eight-speed%20dual-clutch%20auto%3Cbr%3E%3Cstrong%3E0-100km%2Fh%3A%3C%2Fstrong%3E%203.0sec%3Cbr%3E%3Cstrong%3ETop%20speed%3A%20%3C%2Fstrong%3E330kph%3Cbr%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20From%20Dh1.14%20million%20(%24311%2C000)%3Cbr%3E%3Cstrong%3EOn%20sale%3A%3C%2Fstrong%3E%20Now%3C%2Fp%3E%0A
More on Quran memorisation:
Killing of Qassem Suleimani
Skewed figures
In the village of Mevagissey in southwest England the housing stock has doubled in the last century while the number of residents is half the historic high. The village's Neighbourhood Development Plan states that 26% of homes are holiday retreats. Prices are high, averaging around £300,000, £50,000 more than the Cornish average of £250,000. The local average wage is £15,458.
The five pillars of Islam
Company%20profile
%3Cp%3EName%3A%20Cashew%0D%3Cbr%3EStarted%3A%202020%0D%3Cbr%3EFounders%3A%20Ibtissam%20Ouassif%20and%20Ammar%20Afif%0D%3Cbr%3EBased%3A%20Dubai%2C%20UAE%0D%3Cbr%3EIndustry%3A%20FinTech%0D%3Cbr%3EFunding%20size%3A%20%2410m%0D%3Cbr%3EInvestors%3A%20Mashreq%2C%20others%0D%3C%2Fp%3E%0A
COMPANY PROFILE
Initial investment: Undisclosed
Investment stage: Series A
Investors: Core42
Current number of staff: 47
