Solar radiation modification, also called solar geoengineering, is a group of large-scale approaches to reduce global warming by increasing the amount of sunlight that is reflected away from Earth and
Potential complementary responses to climate change: greenhouse gas emissions abatement, carbon dioxide removal, SRM, and adaptation.
Cirrus clouds merging into cirrocumulus clouds
Znamya-2, an orbital mirror experiment conducted by Russia in the 1990s
Projected end-of-century temperature (T) and precipitation (P) changes relative to preindustrial conditions for (a) representative concentration pathway RCP4.5 ("no geo"), and (b) RCP4.5 with SRM ("with geo") to reduce mean global warming to 1.5 °C
The chemtrail conspiracy theory is the erroneous belief that long-lasting condensation trails left in the sky by high-flying aircraft are actually "chemtrails" consisting of chemical or biological age
Solar radiation modification
…2025, several US states implemented or are considering prohibitions on "geoengineering." However, these are aimed not at SRM per se but at purported chemtrails or weather modification. Groups of academics, research networks, and the broader SRM research community have developed multiple sets of principles or…
An Airbus A340's engines leaving a water condensation trail (contrail) – miniature clouds formed by the engine exhaust
Multiple concurrent contrails. How long they last depends upon the weather, especially the temperature, humidity, and wind speed.
Airbus A380 water-filled tanks simulate passenger weight for different takeoff and landing displacement weights. Similar photographs are sometimes said to show chemtrail planes in action.
Ballast barrels with water in a prototype Boeing 747 flight-test plane