U.S. Naval Research Laboratory 25 Febr. 2013: Research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP and here and here) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth’s upper atmosphere.

HAARP glow plasmaSequence of images of the glow plasma discharge produced with transmissions at the third electron gyro harmonic using the HAARP HF transmitter, Gakona, Alaska. The third harmonic artificial glow plasma clouds were obtained with HAARP using transmissions at 4.34 megahertz (MHz). The resonant frequency yielded green line (557.7 nanometer emission) with HF on November 12, 2012, between the times of 02:26:15 to 02:26:45 GMT.

“Previous artificial plasma density clouds have lifetimes of only ten minutes or less,” said Paul Bernhardt, Ph.D., NRL Space Use and Plasma Section. “This higher density plasma ‘ball’ was sustained over one hour by the HAARP transmissions and was extinguished only after termination of the HAARP radio beam.”

These glow discharges in the upper atmosphere were generated as a part of the Defense Advanced Research Projects Agency (DARPA) sponsored Basic Research on Ionospheric Characteristics and Effects (BRIOCHE) campaign to explore ionospheric phenomena and its impact on communications and space weather. See “Owning the Weather 2025” by the US Airforce.

Using the 3.6-megawatt high-frequency (HF) HAARP transmitter, the plasma clouds, or balls of plasma, are being studied for use as artificial mirrors at altitudes 50 kilometers below the natural ionosphere and are to be used for reflection of HF radar and communications signals.

Here is more on the steering of HAARP - from the Star Lab of the Stanford University.