The Magnetotail Reconnection Energy Budget per Substorm

This paper examines the Magnetotail Reconnection Energy Budget per Substorm using representative published values, with every headline quantity evaluated numerically in an accompanying calculation script. The principal findings are that lobe field nT = 20, magnetic energy density J m3 = 1.592e-10, and stored energy J = 7.408e+14. The analysis states its assumptions explicitly, tests how the conclusions move when the inputs vary across their published ranges, and identifies the measurement that would most improve each estimate. The results are presented as scales, ratios and bounds, as appropriate to each quantity, rather than as precise predictions for individual events.