According to the rocket experiments carried out off the coast of Peru, the electron density profile (Ne-h) has two peaks, one at about 105km and the other at 113-114km, which is a distinctive feature found nowhere else.
The meridional dynamo current near noon is divided into two parts, supported by the electron and the ion flows. Under the condition of zero divergence of the total current, the divergence of the electronic or the ionic current is separately obtained, which is not zero in general. The non-zero divergence of the electronic current, which is equivalent to the time rate of change of the electronic charge, is given by ∂(jyσi1/σ2)/∂z, where σi1, σ2 and jy are the ionic Pedersen conductivity, the total Hall conductivity and the eastward jet current. The balance between the electron production rate by the solar ionizing radiation and the recombination of electrons and ions is affected by ∂(jyσi1/σ2)/∂z, which is a kind of transport process to cause the concentration or the rarefaction of the electron density. It is shown that the presence of two peaks in the Ne profile can be explained by this transport process.