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EXPLAINER-What caused the storm that brought Dubai to a grinding halt?

A storm struck the United Arab Emirates and Oman this week bringing record rains that flooded highways, inundated houses, gridlocked traffic and trapped people in their homes.

A minimum of 20 individuals were reported to have actually passed away in the deluge in Oman while another individual was said to have died in floods in the UAE that closed federal government workplaces and schools for days.

The storm had at first struck Oman on Sunday before it pounded the UAE on Tuesday, knocking out power and triggering big disturbances to flights as runways were become rivers.

In the UAE, a record 254 millimetres (10 inches) of rainfall was recorded in Al Ain, a city bordering Oman. It was the largest ever in a 24-hour period considering that records started in 1949.

DID CLOUD SEEDING CAUSE THE STORM?

Rain is uncommon in the UAE and somewhere else on the Arabian Peninsula, that is usually known for its dry desert climate. Summer season air temperature levels can overlook 50 degrees Celsius.

But the UAE and Oman likewise lack drainage systems to deal with heavy rains and immersed roads are not unusual during rainfall.

Following Tuesday's occasions, concerns were raised whether cloud seeding, a process that the UAE often performs, could have caused the heavy rains.

Cloud seeding is a process in which chemicals are implanted into clouds to increase rainfall in an environment where water deficiency is a concern.

The UAE, situated in one of the hottest and driest regions on earth, has actually been leading the effort to seed clouds and boost rainfall.

However the UAE's meteorology company informed there were no such operations before the storm.

WHAT ABOUT ENVIRONMENT MODIFICATION?

The big rains was rather likely due to a typical weather condition system that was worsened by environment modification, professionals say.

A low pressure system in the upper environment, combined with low pressure at the surface had imitated a pressure 'capture'. on the air, according to Esraa Alnaqbi, a senior forecaster at. the UAE government's National Centre of Meteorology.

That squeeze, magnified by the contrast between warmer. temperature levels at ground level and colder temperatures higher up,. produced the conditions for the effective thunderstorm, she said.

The unusual phenomenon was not unforeseen in April as. when the season alters the pressure modifications quickly, she said,. including that climate modification likewise most likely added to the storm.

Climate researchers state that increasing international temperatures,. caused by human-led climate change, is causing more extreme. weather condition occasions around the globe, including intense rains.

Rain from thunderstorms, like the ones seen in UAE in. current days, sees a specific strong increase with warming. This is since convection, which is the strong updraft in. thunderstorms, enhances in a warmer world, said Dim Coumou,. a professor in environment extremes at Vrije Universiteit Amsterdam.

CAN'T DEVELOP CLOUDS FROM ABSOLUTELY NOTHING

Friederike Otto, a senior speaker in environment science at. Imperial College London, said rains was ending up being much heavier. around the globe as the environment warms since a warmer. atmosphere can hold more wetness. It was misinforming to talk. about cloud seeding as the cause of the heavy rainfall, she. stated.

Cloud seeding can't develop clouds from nothing. It. encourages water that is already in the sky to condense quicker. and drop water in specific places. So initially, you need wetness. Without it, there 'd be no clouds, she stated.

Worldwide warming has actually led to extraordinarily warm water. in the seas around Dubai, where there is likewise hot air. above, stated Mark Howden, Director at the Australian National. University's Institute for Environment, Energy & & Disaster Solutions.

This increases both possible evaporation rates and the. capability of the environment to hold that water, permitting larger. dumps of rains such as what we have actually just seen in Dubai.

Gabi Hegerl, a climatologist at Edinburgh University, said. that extreme rains, like in the UAE and Oman, was most likely to. get worse in numerous places due to the results of climate modification.

When conditions are ideal for truly heavy rain, there's. more moisture in the air, so it rains harder. This additional. moisture is due to the fact that the air is warmer, which is due to the fact that of. human-caused climate modification, she said.

(source: Reuters)