HAARP, or High-frequency Active Auroral Research Program, is a program that actually exists, namely ionospheric research funded by the military, the US government, and the University of Alaska. The program has been the target of conspiracy theorists several times, most recently triggering a Turkish earthquake.
Previously, as quoted by us from the Canberra Times, there had been rumors that the HAARP research facility in Alaska could control Earth's weather. The trick is to use metal particles to vibrate in the atmosphere with radio waves.
A Facebook post says planes are used to scatter particles in the atmosphere, before the HAARP facility transmits radio waves to them and eventually regulates the weather.
Of course that claim is not true. Tracing its history, HAARP was born as a joint project of the US Air Force and US Navy in 1993. Then, control was transferred to the University of Alaska Fairbanks (UAF) in 2015.
Its main facility is a high-frequency transmitter used to study the ionosphere, part of Earth's upper atmosphere. Because it was originally a military research project, HAARP has long been the target of conspiracy theories. There are many claims that HAARP can cause natural disasters, even mind control.
Regarding weather control there is also no scientific evidence. "HF (High-Frequency) radio transmissions are related to the interaction of ionized particles (electrons) in the ionosphere, above an altitude of 100 km. Ground-level weather is driven by geophysical effects, mostly solar heating, to a neutral atmosphere much closer to the ground," said Professor Fred Menk, Earth ionospheric specialist at the University of Newcastle.
"There are many HF transmitters globally that direct medium or high signals into the ionosphere. They are used for long-range radio broadcasting and other purposes such as radar and ionospheric monitoring. There is no way any of this could impact the weather. It just doesn't make sense," he added.