The application of Dopplionograms to an understanding of sporadic E

Abstract

The dopplionogram can be used to infer the vertical motion of plasma contours under some circumstances. In a sporadic E sequence, motions downward from above, and upward from below, are observed as the layer peak plasma density increases; this is interpreted as consistent with plasma convergence resulting from an east‐west wind shear. When divergent motions occur, the layer is observed to dissipate and recede rapidly.