My guest today is Dr. Linda Zou, who is a professor of civil and environmental engineering at Khalifa University of Science and Technology. Formerly, cloud seeding was rejected in Australia on environmental grounds because of concerns about the protected species, the pygmy possum. Hydro Tasmania (HT)s cloud seeding activities on 5 June had no impact on precipitation, with this conclusion having a solid scientific basis, stated the June 2017 independent parliamentary report. Dr. Zou: Yes, you are right. Dr. Zou's research interests include applying nanotechnology and membrane science to the development of low energy and high efficiency novel desalination and water purification solutions. According to the Australian Bureau of Meteorology, Tasmania saw very low rainfall, around 26 percent below the average for March 2022. Cloud seeding adds small, ice-like particles to clouds. So how did it come about, and how does it compare to the 2011 Brisbane disaster? The term 'rain bomb' was coined by Daily Mail Australia in 2017 to describe sudden and intense rainstorms, and has since been picked up by politicians and even the Bureau of Meteorology. To be successful, scientists need the right air temperature, the right humidity, a surface that attracts water and keeps it, and then the correct size material to allow condensation to form on the particle. Snowy Hydro also has other criteria for cloud seeding which includes; In addition to these atmospheric conditions, Snowy Hydro also takes into account the amount of water already in the landscape. Then we can later analyze at what stage the droplets formed and at what number and size of the droplets. . So it is a synergistic effect. Some of the natural sources include bushfires, volcanoes and dust storms, while artificial sources of condensation nuclei include industry emissions and cloud seeding operations. A Facebook post with over 23K views asserts this claim with footage from a news broadcast about cloud seeding before a severe flood in Southern Tasmania. Silver iodide helps rain drops and ice crystals grow larger and increases the amount of rain and snow that can fall from clouds. Copyright 2023 CBS Interactive Inc. All rights reserved. Theres no evidence to suggest it played a role in the 2022 floods in southeastern Australia, either. in response calling the claims misinformation and denying that it conducts cloud seeding flights, stating that it only operates an aerial photography aircraft. Artist depiction of cloud seeding drones. Nanotechnology can engineer material and design the material with well controlled size, shapes, and properties. A planned factory marks a major milestone in the US for new batteries that enable lower-cost, longer-lasting EVs. Leverage advanced weather intelligence and decisioning tools for your enterprise business. In partnership withUAE Pavilion Expo 2020 Dubai. FILE - Buildings are surrounded by flood waters in Londonderry on the outskirts of Sydney, Australia, Thursday, March 3, 2022. What are you working on now, and what are you thinking about next? The key factors of a successful cloud seeding operation include, first, identifying the suitable cloud for seeding. It can enhance precipitation in areas experiencing drought, among other uses. The silver iodide causes water droplets in the clouds to form ice crystals that become heavier and fall faster, releasing precipitation. Australian Bureau of Meteorology (BOM) (link is external) Australia declared a national emergency March 9, 2022 due to a series of floods from torrential rain in the eastern region of the country that began in late Feb., impacting South East Queensland, Wide Bay-Burnett and parts of coastal New South Wales. AN AUSTRALIAN AVIATION company says it has received more than 100 threats following an online conspiracy theory that its pilots unleashed a flooding disaster by cloud seeding. Dr. Zou: It is a challenge area and I have collaborated with the Cloud Microphysics Modeling International team. China is developing a weather-modification system that aims to divert water vapour thousands of miles through the sky and bring rainfall to the country's driest regions. Today, that endeavor is making incredible leaps and bounds as scientists and engineers apply nanotechnology to improve the effectiveness of cloud seeding. You are also pursuing funding initiatives at this point too, for your research. A conspiracy theorist claims destructive rain and flooding in south-eastern Queensland and northern NSW are the result of man-made weather manipulation from "cloud seeding".. The 2022 eastern Australia floods were one of the nation's worst recorded flood disasters with a series of floods that occurred from February to April in South East Queensland, the Wide Bay-Burnett and parts of coastal New South Wales. Property damage. Between 1967 and 1972, during the Vietnam War, it spent roughly $3 million each year on weather modification . Defence and National Security Intelligence. Australia 05:57 31 Mar 2022 . We were founded in 1899 at the Massachusetts Institute of Technology, and you can find us in print on the web and at events each year around the world. Laurel: Your research focuses on the cloud seeding material itself, specifically the nanomaterials as you mentioned, which is a more effective tool in generating rain from existing clouds. Twitter users are sharing a clip from a 2016 news broadcast about flooding in Tasmania to claim it proves that cloud seeding provoked the heavy rainfall. In the open environment, it's more challenging. Ben Domensino, a meteorologist at Weatherzone, says the low pressure trough is delivering the rainfall but an area of colder air higher in the atmosphere is drifting in, making the atmosphere unstable and allowing moisture to be lifted up and dropped as rain. Now theyve finally become mainstream. Where did it go wrong. The 'ice embryos' interact with the surrounding water droplets, and eventually grow to snowflakes. Recent research suggests that the decades-old approach can be effective, though questions remain about how much water it can wring from the sky. Here are the tales of two unsuccessful Queensland rainmaking experiments -Brisbane, 1882 Advertisement, The Brisbane Courier, January 31, 1882In January . 'I have known for years they have been using this technology!' If you think a claim has been misjudged or requires correction, please send us evidence to support your error claim. Cloud seeding is an artificial weather modification technique that involves introducing cloud condensation nuclei into the atmosphere, which enhances a clouds ability to produce rain and snow. The previous record was 600.4mm in 1974. The claim is false. This cloud seeding area spans over the high elevation areas of the Snowy Mountains within the Snowy Hydro water catchment area, covering approximately 2110 square kilometres. Laurel: Then in the real world where we don't have this controlled chamber, it's not quite as easy necessarily to measure that kind of success. This is done by firing small particles (usually silver iodide) into clouds . March 28, 2022. One reason for the wetness is likely La Nia, which for the first time this century has returned for three consecutive years. Under NSW legislation, Snowy Hydro can only cloud seed when precipitation is likely to fall as snow to elevations below 1,400 metres. Archives of Handel Aviations website dating back to 2008 show that cloud seeding services have never been mentioned or offered on its site and there is no evidence that the company has been involved with the process. We also assess the Snowy Schemes reservoir storage levels to ensure additional snowmelt from cloud seeding will not contribute to flooding downstream, Snowy Hydro said. This is a black-and-white photograph of a cloud-seeding operation over the Pacific Ocean near Sydney. Were not altering the updraft of the clouds. Recent social media posts claim that the 2022 floods in Australia were caused or exacerbated due to cloud seeding. Get browser notifications for breaking news, live events, and exclusive reporting. It involves manipulating existing clouds to try and help them produce more rain or snow. 2022. March 8, 2022 . Handel Aviation did not return requests for additional comment. The costs are split among state agencies in Colorado, Utah and Wyoming, where the . Why Is the Government Cloud Seeding in NSW's Over the Areas That Have Just Been Ravaged by Floods? One user even claimed that planes about 1,200km away from the epicenter of the floods might be to blame. Feast to Famine: Mass Floods and Australia's High-Speed Rail. reach out to us at Conversely, she said cloud seeding would not dramatically worsen clouds that are already forecast to produce severe weather. Conspiracy theorists claim the motive for'elites' carrying out a 'weather attack', which submerged communities around Byron Bay and Lismore, was to move people into 'smart cities'. Cloud seeding is a real thing. Handel Aviation posted a statement in response calling the claims misinformation and denying that it conducts cloud seeding flights, stating that it only operates an aerial photography aircraft. It is important to note that the American Chamber of Commerce in South China (AmCham South The colors depict the wetness percentile; that is, how the levels of groundwater compare to long-term records (1948-2012). Cloud seeding got its start in 1947, with General Electric scientists working under a military contract to find a way to de-ice planes in cold weather and create fog to obscure troop movements. Theres a small one, a medium one, and a large one. By James Dinneen March 3, 2022. Given climate change is a background to all weather events, its hard to say that it does not play a role, he says. For frequently asked questions, please check our Knowledge Base. Researchers have been trying to . Cloud seeding: Making rain in desert. Although cloud seeding has been around since the 1940s, climate change and population growth are driving scientists to take a closer look at the technology, which could offer a viable cost-effective supplement to existing water supplies, particularly in arid and semi-arid regions, like the United Arab Emirates. Water vapour gathers around the particles and eventually falls as precipitation. The technique has been around for decades. Multiple posts on Facebook - as seen here, here and here - attempt to link Australia's floods with cloud seeding and possible government manipulation of the weather. To achieve this, we use the nanotechnology to deposit titanium dioxide nanoparticles as a shell layer and sodium chloride crystal core. We designed and fabricated a porous nanocomposite of 3D reduced graphite oxide and silica dioxide nanoparticles. Unattached supercooled water vapour molecules in the clouds condense around these particles. Why are you interested in this type of research? Cloud seeding is a form of weather modification that mimics what naturally occurs in clouds but enhances the process by adding particles that can stimulate and accelerate the condensation process. Conspiracy theorists . Australia One Party (A1) - Update March 3, 2022. Hundreds replied to his post with comments claiming 'the government' was using experimental technology to carry out 'cloud seeding' - a weather modification process that theoretically alters the microphysical state of clouds, causing rain. The area of cooler air in the upper atmosphere drifts into the low pressure trough and starts to deliver record-breaking downpours over Brisbane and its surrounds. As floods devastated Australia's east coast, social media posts accused a pilot of causing the disaster through cloud seeding, a weather modification technique that involves dropping a rain-inducing chemical into clouds. For one of the planes, only the nose and part of the propeller are visible, and the photograph appears to have been . Second, having the efficient seeding material for water droplet formation. . Brisbane suffered major flooding, along with the cities of Maryborough, Gympie, the Sunshine Coast, Caboolture, Toowoomba, Gatton, Ipswich, Logan City, the . Dr. Zou: Yes. 'Surprisingly, they have talked about cloud seeding and weather manipulation on the mainstream media so it's coming from multiple sources now. Laurel: You were one of the first scientists in the world to explore the use of nanotechnology in cloud seeding. This material may not be published, broadcast, rewritten, or redistributed. There are up to 15,000 homes flooded in the city, with 1,544 people in evacuation centres in the south-east. In the 2016 clip from the Australian TV network 7News, a journalist says, Residents in southern Tasmania are demanding to know why cloud seeding was conducted over the Derwent River catchment the day before the worst floods in 40 years., One social media user shared the old clip Tuesday with the caption, Remember when this was a CONSPIRACY NOW - CLOUD SEEDING IS NOW OPENLY REPORTED - MAKING FLOODING WORSE - investigations are now being conducted as to WHY this was done!. The small one could be 20 meters and the large one could be like a building. According to Domensino, some 611.6mm of rain fell on the city between 9am Friday and 6pm Sunday the highest three-day total in records dating back to 1840. As Brisbane starts a long and costly clean-up, hundreds of cars are stuck on the main M1 highway to the south. Most research has found that AgI, when dispersed in cloud seeding, has no adverse health effects on the environment. Mr Bartolo, a former bodybuilder who claims to be an army veteran, also promotes a range of other unhinged conspiracies including that vaccines and 5G are weapons, the world is flat, space is fake, the government is run by freemasons, and that the water supply is being poisoned. It is not yet known whether these findings also apply to wild conditions. The U.S. has a long history of cloud seeding, and gained a lot of attention in October of 1947 when it cloud seeded a hurricane. Social Credit? 'If you also know this, comment on your awareness of unnatural weather below. The language they are using such as "rain bombs" is clear enough for me,' a commenter said. Laurel: Dr. Zou, thank you so much for being with us here on the Business Lab. This shows us the risk is real to have two serious flood events in just 11 years is a pretty high frequency for a major city like Brisbane to have to deal with.. There was a high degree of luck in terms of where we started from [with Wivenhoe Dam], he says, adding that the climate crisis will only raise the risk of future events. The flight was collecting images for aerial maps provided to Australian mapping company NearMap, he said. These fall to the ground as snow or raindrops, depending on the surface temperatures. Conspiracy theorists claim the floods devastating Australia's east coast are a 'government weather warfare attack' triggered by 'chemtrails' James Bartolo, former Melbourne anti-lockdown leader . one follower wrote. Apr 22, 2022. Australia's 2022 floods have seen Brisbane's Southbank hit by a 'rain bomb'. Is that correct? Pictured: Local residents wade through floodwater in Lismore, NSW. Nobody has ever seen this amount of rain in such a short period of time over our south-east catchment, says the Queensland premier, Annastacia Palaszczuk. This show is available wherever you get your podcasts. Dr. Zou leads a groundbreaking research project using nanotechnology to develop cloud seeding materials. Were having trouble saving your preferences. Source: Snowy Hydro. Pictured: Homes inundated by floodwater in Lismore, NSW, James Bartolo (pictured) is a former bodybuilder who promotes a range of bizarre conspiracies. Thanks for listening. This data describing my new seeding materials property and their interactions in atmosphere. EPA. . This nanoengineered shell core structured material can be activated at much broader relative humidity conditions such as about 65%. Laurel: Your research signifies a milestone toward achieving greater water security in the world. One patent is filed on the titanium dioxide, sodium chloride material for warm cloud seeding, and another patent is filed for porous graphite oxide, silica dioxide, nano compensated for cold cloud seeding. Cloud seeding was conducted a day before the recent floods in Australia. An Australian aviation company says it has received more than 100 threats following an online conspiracy theory that its pilots unleashed a flooding disaster by cloud seeding.. For the third time this year, Sydney has been hit by major floods. Hydro Tasmania also denied that its flights were to blame and said in a statement that an analysis shows the operation had no measurable impact on rainfall on that day.. A dangerous and bizarre conspiracy theory is circulating that the devastating floods which have torn through Australia's east coast are part of a 'government weather warfare attack'. They are made of many super cooled water vapors, so although they are below zero, they remain as vapor. As well as the rising river levels, the amount of rain falling locally causes flash floods all across the city and its outer suburbs as creeks swell, inundating areas that escaped the 2011 floods. It can enhance precipitation in areas experiencing drought, among other uses. A Hydro Tasmania spokesperson told the AP that it has since stopped conducting cloud seeding. . Cloud seeding was first trialled in Australia in 1947 when the CSIRO got up in a light plane and released crushed dry ice into promising-looking clouds. But conspiracy theorists aren't buying it. The report did not find evidence to prove that the cloud seeding flight contributed to the flood. (Audience submitted: David Bradley)"The extent to which cloud seeding has exaggerated the flood is still . What could be the reason behind mass flooding down the east coast of Australia? La Nia events can influence weather in different ways across the . These images are used to assess the damage caused by recent weather events.. The map above depicts shallow groundwater storage in Australia from November 11-14, 2022, as measured by the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites. Cloud seeding is still practiced in the Snowy Mountains in NSW today, carried out by Snowy Hydro Limited. A spokesman for the state's water authority says the dam doesn't have a flood mitigation component, so no water was released ahead of the downpour, which came when the state's dam network . It will initiate from the thin water layer formed on the surface of the ice nuclease, and the ice will grow rapidly at the expense of the water vapor in the cloud. What did you develop and how will it facilitate future research? A device at the top of the chamber releases the seeding materials. The flight path of the Handel Aviation aircraft VH-JIL criss-crossing over flooded areas was also shared online by Australian fashion designer Alice McCall alongside claims it was dropping chemicals to "activate rain.". Is that correct? A decades old idea, with todays innovation, might be the answer to help drought-stricken countries and to fight climate change. A record-breaking and relentless deluge that lasted days and flooded towns and cities along Queenslands south-east coast, submerging thousands of homes and leaving at least nine people dead. The United Arab Emirates is creating its own rain using drones that fly into clouds and unleash electrical charges to beat the sweltering 122 degrees Fahrenheit (50 degrees Celsius) heat. Messaging from rooftops: Lismores flooded residents document a disaster, Eastern Australian states hit by major flooding after rain bomb weather event, Original reporting and incisive analysis, direct from the Guardian every morning, Eastern Australia reeling from NSW and Queensland 2022 floods as downpour moves south video report, NSWdeath toll rises to five; more high impact storms forecast for Queensland as it happened, Australia east coast floods: how to help those affected in NSW and Queensland, There is no comprehending the sound and fury of the flooding that pulverised Brisbane, A jetski turned up with Mick Fanning on it: world champion surfer ferries locals through NSW floods, Ballina flood: thousands of homes impacted with peak to continue for a number of hours, Sydney on high alert for flash flooding over next 24 hours as heavy rain lashes city, Floods and livestock losses leave NSW and Queensland farmers reeling from third disaster in three years, Flood of help: how the NSW and Queensland disaster has brought neighbours closer together, Disaster agency defends not listing Lismore as flooding priority area for funding, NSW and Qld floods live updates latest eastern Australia flood news, Ballina: emergency orders issued for NSW coastal town as waters rise, Lismore man saves 16 people and five dogs after losing his own home, Flash flood warning for parts of Sydney and nearby districts, evacuation orders are issued for South Ballina. 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