  Multiple observations of Blue Jets (BJ)) show that BJ emits a fan of
streamers similar to a laboratory leader. Moreover,in the exponential
atmosphere those long streamers grow preferentially upward, producing a narrow
coneconfined by the aperture angle. It was also noticed that BJ are similar to
the streamer zone of a leader (streamer corona) and the modeling studies based
on the streamers fractal structure were conducted. Objective of this paper is
to study the fractal dimension of the bunch of streamer channels emitted by BJ,
at different altitude and under the varying reduced electric field. This
similarity analysis has been done in three steps: First we described the
dendritic structure of streamers in corona discharge applying the fractal
theory. Then using this model and the data from existing laboratory experiments
we obtained the fractal dimension of the branching streamer channels. Finally
the model was validated by the observations of BJ available from the
literature.

Atmospheric and Oceanic Physics