Journal Article
Open Questions on Ion–Neutral Collisions and Coupling in the Lower Thermosphere–Ionosphere: Electrodynamics, Energetics and Dynamics
Theodoros E. Sarris; Stelios Tourgaidis; Dimitrios Baloukidis; Maxime Grandin; Astrid Maute; Robert F. Pfaff; Jeffrey Thayer; James Clemmons; Karl Laundal; Hanli Liu; Panagiotis Pirnaris; Noora Partamies; Fazlul I. Laskar; Jean-Jacques Berthelier; Mykola Ivchenko; David Knudsen; Tomoko Matsuo; Minna M. E. Palmroth; William Bill K. Peterson; Gareth Perry; Claudia Stolle; Sarah Vines; Michel Blanc; Mathieu Barthelemy; Hilde Nesse
Surveys in Geophysics · 2026
Abstract
The Lower Thermosphere–Ionosphere (LTI) is the interface region between the Earth’s atmosphere and space. It is modulated by the energy and momentum deposition from the magnetosphere above and by the impacting waves from the lower atmosphere. The LTI region is defined by the co-existence and interaction of neutral and ionized species within the region’s electric and magnetic fields. This interplay results in unique and complex interactions between neutrals and plasmas, that are not fully understood and quantified to this date. In this paper we present an overview of some of the most important open questions related to ion/neutral coupling and the resulting collisional electrodynamics, collisional energetics and collisional dynamics processes. We outline the key reasons for addressing these questions, and highlight methodologies that can lead to their closure in the upcoming years.
Bibliographic Information
| Journal | Surveys in Geophysics |
|---|
| Publisher | Springer |
|---|
| Publication Date | 2026-02-10 |
|---|
| Publication Year | 2026 |
|---|
| Document Type | Journal Article |
|---|
| Print ISSN | 0169-3298 |
|---|
| eISSN | 1573-0956 |
|---|
| DOI | 10.1007/s10712-026-09937-8 |
|---|
Access Information
Full-text access depends on NARA's subscribed coverage and institutional access.