Open the AtlasOpen the AtlasRain enhancement makes a cloud that is already capable of raining precipitate more efficiently. A few grams of silver iodide are released into a cloud holding supercooled water — water still liquid below 0 °C. The agent gives it something to freeze onto; ice crystals form, grow, and fall as rain or snow.
It cannot create a cloud, move weather, or make rain from a clear sky. The technique dates to the 1940s and runs operationally in more than 50 countries.
For the right clouds, yes. The evidence is strongest for cold clouds holding supercooled water, where recent controlled experiments traced the full chain from release to rain on the ground. Randomised programs report increases of 5–15 % in suitable conditions.
Because of the size of the target. The cloud formations we work are small and short-lived. A crewed aircraft needs an airport, a crew and lead time, and can't hold station over one. Our UAVs launch in minutes, probe the cloud in place, and cost little enough to fly constantly. More attempts is more evidence.
Silver iodide, in grams, released at the point in the cloud where our onboard probe says it will act. It is the standard agent of the field, and studies of past operations have found no significant human-health or environmental impact. Precise placement means a smaller dose for the same effect. Every release is logged: position, time, quantity, and the measurements that justified it.
Radar follows the treated cloud formation, rain gauges confirm what reached the ground, and where the design allows we run randomised arms so treated and untreated formations are compared. A single rain event can't be attributed with confidence so we report over samples, with confidence intervals.
No. Most of the water crossing a dry region formed over the ocean and returns to it without raining on land. A precipitation episode releases only 5–10 % of a cloud's water — humidity caps how much can fall in one pass — so a treated cloud moves on with most of its load. Treated formations are statistically more likely to keep raining downwind, not less. And what falls evaporates and returns: we speed a cycle up inside a bounded area, we don't drain a fixed pot.
No. Weather modification acts locally, over hours to days. Climate intervention aims at the global scale, over decades. We work exclusively on the first: we do not alter atmospheric composition at scale, block sunlight, or attempt to change climate.
Fully electric aircraft, grams of agent per sortie, and very limited infrastructure — a fraction of an aircraft program's footprint. Downwind and ecological effects are where the field's evidence is thinnest generally; we monitor for them as part of operations rather than assume they're absent.
A free global atlas that measures water shortage on the ground and atmospheric water in the air, independently, and puts the two side by side. Three views — Water Shortage, Water Resource, Addressable Shortage — for countries and regions, river basins, or uniform ~45 km hexagons. Built entirely from open scientific data; the methodology names every source.
No. The Addressable view is a scenario: if a program converted Δ % of the eligible water that passed overhead, how much of the shortfall would that have closed. Δ is a slider you set — default 0.5 % — not a measurement of our performance. Every value describes a month that has already happened, and nothing is interpolated.
Because only part of it is workable. We count water moving through cold clouds holding supercooled liquid, roughly −25 °C to 0 °C — the regime the technique acts on — weighed where that liquid actually sits through the depth of the cloud, not at its top. Warm-cloud methods aren't counted at all: their evidence base is weaker. It is deliberately conservative.
Europe, starting in France. We work with water authorities, agricultural and energy operators, and research partners, under EASA rules and each country's national authority.
Three stages, each a gate on the next.
Feasibility study. We model your target area against its own history: how deep the shortfall runs, how much eligible water passes overhead, what a program could plausibly add, and what that is worth. You get a full report and a live dashboard, and nothing is committed until you've read it.
Set-up. Aerial clearance (SORA and reserved airspace), environmental permitting where it applies, then launch-site preparation and a local weather-station network. Permitting lead time depends on jurisdiction.
Active season. Dedicated or on-demand capacity, with the measurement design agreed before the first flight.
