Energy characteristics and the source of natural ball lightning

Data related to<strong>"</strong>Energy characteristics and the source of natural ball lightning<strong>". </strong> This work, based on quantitative spectrometric analysis, is an exploratory research on the energy density, radiated power density and their evolution feature of a natural ball lightning. And especially the energy source of this BL was explained. The discharges from the residual charge at the bottom of the previous CG lightning channel provide the energy source of this BL, and its intense light is mainly sourced from the contribution of soil composition, while the surrounding electric field distribution is the main factor affecting the motion of the BL.