Figure 3. A pattern of the progress of the storm on Aragats on 25 May. a) The distance to the cloud base. b) Images of the graupel fall. c) Disturbances of the near NS electric field (blue), count rate of ASNT spectrometer (black), and distance to lightning (red).
In Table 1 we summarize characteristics of TGEs registered on Aragats during storms in May 2021.
In the first 2 columns we post the TGE start and finish times; in the third the percent of flux enhancement relative to pre-TGE value; in the fourth – mean NS electric field during TGE (on May 25 there were 2 distinct values of NS field – both are posted, separated by slash); in the fifth column – the mean temperature and distance to cloud base separated by a slash; it the sixth – the time of a terminated flash (if any); in the seventh – distance to lightning flash; in the last column - flash initial and final NS electric field, again separated by a slash.