4
Not in any significant way.
As an analogy, if you are looking for a suspect responsible for knocking down the trees in a forest, you shouldn't worry about someone carrying a Swiss army knife, it just isn't the right tool.
HAARP has a power of 3.6 MW, which is a lot, but nothing compared with the energy in a modest storm. As an example, a single lightning ...
2
Apparently it is possible for the ionosphere to influence the conditions in the lower atmosphere.
The following are relatively recent results from a paper in 2009, and a summary and up-to-date state-of-the-art can be found in this paywalled, upcoming chapter in a book.
As it turns out, at least in the arctic regions, the ionosphere can have quite an ...
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