We review observations and theories of the solar ablation of planetary atmospheres,
focusing on the terrestrial case where a large magnetosphere holds off the solar wind, so …

In this review, we examine four specific questions/issues of contemporary interest within the
overall topic of ionospheric plasma outflow into the magnetosphere. These four question …

We have investigated how geomagnetic activity, the solar wind (SW), and the interplanetary
magnetic field (IMF) influence the occurrence of the F‐region/topside ionospheric ion upflow …

Regions where dayside field‐aligned (FA) ion upflows occur are identified, and the relative
occurrences and characteristics are compared. The study is based on∼ 170 simultaneous …

An ionospheric plasma fluid transport model is used to investigate the effects of soft (< 1
keV) electron precipitation on high‐latitude F region/topside ionospheric O+ upflows. In this …

In the nightside subauroral region, heat transfer from the ring current causes a significant
increase in the electron temperature of the upper ionosphere. Using DE-2 satellite data, we …

A statistical analysis is conducted on the relationships among high‐latitude topside (850–
950 km altitude) ionospheric plasma parameters and precipitating soft (≤ 1 keV) electron …

The dependence of ionospheric O+ escape flux on electromagnetic energy flux and electron
precipitation into the ionosphere is derived for a hypothetical ambipolar pickup process …

This paper is primarily concerned with the causes of the large density and temperature
enhancements that are often observed during magnetically quiet periods on winter nights at …

Although the horizontal density structures of the polar ionosphere have been extensively
studied mostly using the F-region peak density or total electron content, there are relatively …