Cloud seeding technology is one of the boldest experiments aimed at interfering with nature.
Cloud seeding technology, which creates artificial rain, is considered a strategic solution by many countries. (Source: BBC)
Rainfall control technology: From agricultural applications to momentous occasions.
From drought relief and water security to ensuring clear skies for major events, artificial rainmaking technology is becoming a strategic tool for many countries.
In the context of increasingly severe climate change and water scarcity, cloud seeding technology is considered a strategic solution by many countries. From laboratory research to practical implementation, this technology opens up many opportunities but also generates considerable debate.
According to scientific studies, artificial rainmaking is the process of introducing condensation particles such as silver iodide, potassium iodide, or dry ice (solid CO₂) into clouds to stimulate the formation of water droplets. When the droplets are large and heavy enough, they fall to the ground as rain.
Common cloud seeding methods include: spraying from aircraft, firing missiles or fireworks carrying chemicals into the clouds, and even using flare systems launched from the ground.
This technology is being applied to mitigate droughts, replenish water resources, support agriculture, control forest fires, reduce air pollution, and regulate weather for major events.
The process of creating artificial rain. (Source: induqin.com)
According to ScienceAlert, Russia has used cloud seeding to prevent rain during many major holidays. A prime example is International Workers' Day on May 1st in 2016. They used aircraft or missiles to drop special substances such as silver powder, potassium salts, or dry ice into the clouds. These substances help rain fall earlier elsewhere, before the clouds reach Moscow. Thanks to this, major Russian events in recent years have taken place in favorable weather conditions.
Previously, China also employed similar technology during the opening ceremony of the 2008 Beijing Olympics. More than 1,100 rockets were fired into the sky to "release" rain before the event took place.
A significant breakthrough comes from the research group of Professor Linda Zou at Khalifa University (UAE). According to MIT Technology Review, the group has developed a nanomaterial with a NaCl salt core coated with titanium dioxide.
A key advantage is that nanoparticles can function at lower humidity levels (around 65%), whereas traditional materials are only effective at humidity levels above 75%. As a result, the ability to form water droplets is significantly improved.
The UAE has conducted trials in Texas (USA) and recorded promising results. In addition, the team has developed a core material for creating ice in cold clouds, capable of operating at temperatures as low as -8°C, significantly higher than previous materials.
Potential and challenges
A study in the Global Journal of Climate Studies showed that cloud seeding with silver iodide can increase rainfall by 10–30% under optimal conditions. However, effectiveness depends on many factors such as cloud type, cloud base altitude, air humidity, and deployment strategy.
Cost-benefit analysis shows that economic benefits, such as increased agricultural productivity or reduced drought damage, often outweigh the implementation costs. However, scientists recommend that governments base their deployment of this technology on scientific evidence, rigorous oversight, and transparency.
Artificial rainmaking technology opens up many potentials, such as supplementing water resources, supporting local climate management, and diverse applications in agriculture, the environment, and even events.
However, the challenges are also significant: the technology's effectiveness is not yet stable, the costs are high, and it requires modern infrastructure and specialized personnel. Furthermore, the use of chemicals may raise concerns about long-term environmental impacts. Legal and ethical issues surrounding weather intervention, especially in border areas, are also subject to much debate.
From nationwide campaigns to pioneering nanomaterial research in the UAE, it's clear that artificial rainmaking technology is entering a new phase of development.
However, to become a sustainable solution, this technology needs to be implemented responsibly, based on scientific principles, with transparency and international coordination.
Mr. Quang
Source: https://vtcnews.vn/giai-ma-cong-nghe-duoi-may-ar963372.html
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