looking into the haarp site you refer to i went to this page, "What Are the Effects of HAARP on the Ionosphere?" and left with the impression Haarp injects energy into the Ionosphere.
The Ionosphere is this: [link to dictionary.reference.com]

i·on·o·sphere
   [ahy-on-uh-sfeer]

noun
the region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth.

so know we are getting somewhere.I am beggining to think Haarp messes with nature.