Downward lightning may be the cause of upward lightning above the nearest tall buildings. Researchers from different universities have published a paper on the scientific news website Phys, which discusses what can cause lightning to rise from skyscrapers.
Scientists still do not know the mechanism of the appearance of upward lightning. There are various explanations and assumptions, although it has not yet been studied in detail.
To investigate one of the reasons for the appearance of upward lightning, scientists created a variety of simplified scenarios and showed that a link between the lightning that developed near the skyscraper and then the upward lightning above the building exists.
With the new generation of video cameras, scientists have discovered a new type of upward lightning. Due to the speed of lightning, the human eye perceives upward and downward lightning alike.