The project, called REFLECT, comes as climate records keep piling up. Copernicus reported that 2025 was the third-warmest year on record, while the years 2023 to 2025 were the first three-year period to average more than 1.5\u00b0C above pre-industrial levels. <\/p>\n\n\n\n
That does not mean the Paris Agreement<\/a> limit has officially failed, but it shows why scientists are looking at difficult questions that once seemed too controversial to touch.<\/p>\n\n\n\n Marine cloud brightening is based on a simple physical trick. Tiny sea salt particles can act as seeds for cloud droplets, and when more droplets form, some clouds can become brighter and reflect more sunlight away from Earth.<\/p>\n\n\n\n In practical terms, researchers are asking whether seawater mist could cool a specific ocean area<\/a> during dangerous heat. Think of reefs during a marine heat wave, not someone trying to dim the sun over a city.<\/p>\n\n\n\n REFLECT is part of ARIA\u2019s Exploring Climate Cooling program, a \u00a356.8-million ($77 million) effort funding 22 research teams across climate modeling, atmospheric physics, engineering, governance, and ethics. ARIA says the goal is to build evidence on whether these approaches could ever be feasible, safe, scalable, and governable.<\/p>\n\n\n\n Project lead Hugh Coe, Professor of Atmospheric Composition at the University of Manchester and NCAS, said marine cloud and sky <\/a>brightening could provide \u201ca temporary cooling effect,\u201d while stressing that it is \u201cnot a substitute for reducing carbon emissions.\u201d That point matters. No cloud spray can replace cutting the pollution that is heating the planet.<\/p>\n\n\n\n The REFLECT team plans to begin with technology development, including lab-based chamber studies to find the right size and formation rate for sea salt aerosol particles. Engineers will also examine spray methods such as superheated atomization, electrospraying, and bubble-bursting atomization.<\/p>\n\n\n\n Any outdoor experiment<\/a> would have to be small, controlled, time-limited, and reviewed through legal and environmental assessments. ARIA says no UK locations have been confirmed, and the seawater-spray outdoor experiments would not begin before 2028.<\/p>\n\n\n\n The challenge is not just spraying water into the sky. The droplets have to be the right size and consistent enough to behave predictably in real air, with wind, humidity, salt, and shifting cloud conditions all in the mix.<\/p>\n\n\n\n Too large, and droplets may fall out or fail to create the desired fine salt particles. Too small, and they may not brighten clouds enough to matter. That\u2019s why the first stage is more like careful engineering than a dramatic climate intervention.<\/p>\n\n\n\n There is a real-world reason scientists are interested in this. NASA <\/a>reported that a 2020 global rule limiting sulfur in ship fuel reduced artificial \u201cship track\u201d clouds to record-low levels. These bright cloud lines formed when water vapor gathered around pollution particles in ship exhaust.<\/p>\n\n\n\n That rule was designed to clean up air near ports and coasts, and the International Maritime Organization said lower sulfur emissions bring major health and environmental benefits. But it also revealed how sensitive some clouds can be to tiny particles in the air. Cleaner air is good, but climate physics can be messy.<\/p>\n\n\n\n The most important line in this story is not readily apparent. REFLECT is not a license to keep burning fossil fuels while hoping clouds do the hard work for us.<\/p>\n\n\n\n ARIA says it is not funding deployment of climate cooling technologies, and that experiments must remain limited in size, duration, and effect. Its public materials say the research could even show that these ideas should be ruled out entirely.<\/p>\n\n\n\n For now, the work is about data, not drama. Researchers will compare lab results with computer models, study how sprays behave, and engage with communities before any real-world test is approved.<\/p>\n\n\n\n The bigger question is not only whether the mist can brighten clouds, it is whether society can handle this kind of research with enough caution, transparency, and honesty. The sky may be the laboratory, but trust is the real test.<\/p>\n\n\n\n The press release was published on The University of Manchester<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" A team led by the University of Manchester is studying whether spraying a fine mist of seawater into the air … <\/p>\nHow the idea works<\/h2>\n\n\n\n
Also Read: Japan opens a plant in Fukuoka and turns seawater into a new source of electricity<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
Why this is being tested<\/h2>\n\n\n\n
Small tests, strict rules<\/h2>\n\n\n\n
The droplet problem<\/h2>\n\n\n\n
Also Read: The worst row on a plane is being turned into a semi-private pod, and SkyNook makes the back of economy look almost premium<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
![\"A](\"https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/seawater-mist-cloud-brightening-climate-shield.jpg-1.jpg\" "\\"\\"")
The shipping clue<\/strong><\/h2>\n\n\n\n
Not a climate fix<\/h2>\n\n\n\n
What comes next<\/h2>\n\n\n\n
Also Read: Xiaomi is just hours away from launching the POCO X8, and anticipation has already skyrocketed<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n