Inner Magnetospheric Plasma Distribution as a Function of Latitude and L-Shell: an RPI Case Study Huang, X, Reinisch, B W, Song, P, Khmyrov, G We apply the newly developed technique of measuring the plasma density along the magnetic field from one hemisphere to the other. The technique is based on an inversion method of the sounding measurements from the Radio Plasma Imager on the IMAGE satellite. We focus on one pass in the morning sector when continuous measurements are available. A complete measurement, which provides a hemisphere-to-hemisphere density profile, was made every two minutes. Eight profiles are obtained from L=2.22 to L=3.23. With these measurements a two-dimensional density profile as a function of latitude and L-shell is derived.