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T 88 ← ང་ + N + ว + B EXPLAINED CLIMATE WHAT WAS BEHIND THE HEAVY RAINFALL THAT FLOODED DUBAI? ALIND CHAUHAN NEW DELHI, APRIL 17 THE UNITED ARAB EMIRATES (UAE) recorded the heaviest rain ever after a se- vere thunderstorm hit the country on Mon- day night, killing at least one person, and causing damage to homes and businesses. According to the state-run WAM news agency, the rain was "a historic weather event" that surpassed "anything documented since the start of data col- lection in 1949"- that was before the UAE was established in 1971. Heavy rain is unusual in the UAE, which is an arid, Arabian peninsula coun- try. However, it occasionally rains in the region during the cooler winter months. What happened? The thunderstorm began on Monday night, and by Tuesday evening had dumped more than 142 millimetres (mm) of rain onto the desert city of Dubai. Usually, the city witnesses this much rain in a year and a half. An average year sees 94.7 mm of rain at Dubai International Airport. The heavy rain led to disruption of air travel as flights were either diverted or de- layed. Operations at the airport were tem- porarily suspended for 25 minutes on Tuesday afternoon. Across Dubai, homes were flooded and vehicles were aban- doned on roadways. Popular shopping centres like Dubai Mall and Mall of the Emirates were also flooded. The city of Al Ain, which is nearly 130 kilometres (km) away from Dubai, wit- nessed record rainfall of 254 mm. What led to the heavy rainfall? The primary reason for this heavy rain was a storm system, which was passing through the Arabian peninsula and mov- A person walks in flood water in Dubai on Wednesday. Reuters ing across the Gulf of Oman. According to a report by the Associated Press, the rain could have been exacer- bated by cloud seeding, a process of spraying salt mixtures in clouds that would result in condensation of the cloud and eventually cause rainfall. The UAE's National Center for Meteorology had flown six or seven cloud-seeding flights before the rain, the AP report said. Some experts suggested that climate change could also be behind the heavy rain. The UAE's average surface temper- ature has increased by 0.4 degree Celsius between 2003 and 2022. Higher temperatures cause evapora- tion of water not only from land but also oceans and other water bodies, meaning a warmer atmosphere holds more moisture. For every 1 degree Celsius rise in average temperature, the atmosphere can hold about 7% more moisture. This leads to an increase in precipitation intensity, which ultimately can cause severe flooding. However, it is extremely difficult to at- tribute any particular extreme weather event to climate change. Multiple factors, like patterns of natural climate variability, such as the El Niño, contribute to such events. Cloud seeding is a weather modification technique that improves a cloud's ability to produce rain or snow by introducing tiny ice nuclei into certain types of subfreezing clouds. The primary goal of it is to enhance precipitation in areas facing water shortages, droughts, or where water resources are critical for agriculture, hydroelectric power generation, or other purposes. Seeding Agents includes 1) Silver lodide used in cold clouds 2) Calcium Chloride used in warmer clouds 3) Other chemicals: Potassium iodide, dry ice, propane, calcium carbide, ammonium nitrate, sodium chloride, and urea compounds. 1. An aircraft injects silver iodide or other substances into the atmosphere Silver iodide 2. The chemicals mimic the particals that serve as surfaces for condensation that creates water droplets Once the condensation creates water droplets that are large enough, the rain will fall El Nino is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. It is the "warm phase" of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). TWEETSFORUPSC 102

UAE Floods and Cloud Seeding


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Green | Weather & Science Dubai Grinds to Standstill as Cloud Seeding Worsens Flooding Seeding planes used to take advantage of low pressure system ■Heavy rain disrupts transport systems and closes UAE schools in if WATCH: Flash flooding hits Dubai. Source: Bloomberg By Verity Ratcliffe and Kateryna Kadabashy April 16, 2024 at 4:33 PM UTC Updated on April 17, 2024 at 9:23 AM UTC Save Listen 2:31
Dubai: *cloud seeding for who knows how long* Also Dubai when they suddenly get a whole years worth of rain dumped on them in 24 hours:
We perform cloud seeding operations We get more rain We ground the city and clog it's entire drainage system We ground the city and clog it's entire drainage system
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