ENLoTIS: A Science Framework for Improving Understanding of the Lower Thermosphere/Ionosphere Through Systematic In Situ Exploration - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

ENLoTIS: A Science Framework for Improving Understanding of the Lower Thermosphere/Ionosphere Through Systematic In Situ Exploration

Résumé

Highlights from the report of the ESA-NASA Lower Thermosphere-Ionosphere Science (ENLoTIS) working group are presented and discussed. This report contains the results of a 12-month study chartered to develop a scientific framework that will enable significant new understanding of the lower-thermosphere/ionosphere (LTI). The consensus result focuses on understanding characteristic LTI behaviors that occur within this mixed neutral-plasma medium in the presence of electromagnetic fields. The basic framework is expressed in terms of an overarching goal supported by three top-level objectives: Goal: To understand how the transition from Earth’s atmosphere to space is governed by the fundamental neutral-plasma interactions that are intrinsic to the lower thermosphere-ionosphere (LTI). Science Objective 1: Collisional Electrodynamics. Determine how collisions between neutral and charged species affect the electrodynamics of the LTI. Science Objective 2: Collisional Energetics. Determine how collisions between neutral and charged species affect the energetics of the LTI. Science Objective 3: Collisional Dynamics. Determine how collisions between neutral and charged species affect the neutral dynamics of the LTI. The report emphasizes the importance of the LTI as the transitional layer between the atmosphere and space, and is strongly motivated by the central role the LTI plays in a variety of space weather effects and their consequences in a space-reliant society. This report is envisioned as a prelude to potential future development of one or more LTI space mission concepts, and puts forward top-level mission requirements including the requirement for systematic in situ sampling of the LTI. It is also hoped that the overall programmatic approach used for the ENLoTIS study can be a pathfinder for efficient new ways for the international space community to join together to achieve common goals.
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Dates et versions

insu-04312980 , version 1 (28-11-2023)

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  • HAL Id : insu-04312980 , version 1

Citer

Theodore Sarris, James Clemmons, Jean-Jacques Berthelier, David J Knudsen, Astrid Maute, et al.. ENLoTIS: A Science Framework for Improving Understanding of the Lower Thermosphere/Ionosphere Through Systematic In Situ Exploration. AGU23 (American geophysical Union 2023), Dec 2023, San Francisco, United States. ⟨insu-04312980⟩
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