Mesoscale phenomena and their contribution to the global response: a focus on the magnetotail transition region and magnetosphere-ionosphere coupling-猫眼课题宝

DOI：

10.3389/fspas.2023.1151339

发表时间：

2023-04

期刊：

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其他

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作者：

C. Gabrielse;M. Gkioulidou;S. Merkin;D. Malaspina;D. Turner;Margaret W. Chen;S. Ohtani;Y. Nishimura;Jiang Liu;J. Birn;Yue Deng;A. Runov;R. McPherron;A. Keesee;Anthony Tat Yin Lui;C. Sheng;M. Hudson;B. Gallardo‐Lacourt;V. Angelopoulos;L. Lyons;Chih‐Ping Wang;E. Spanswick;E. Donovan;S. Kaeppler;K. Sorathia;L. Kepko;S. Zou

一个重要的问题是“中尺度现象如何对系统的全球响应做出贡献？”这一问题正日益成为太阳物理学各分支学科的研究对象。本文在近地空间的两个特定但相互关联的区域--磁尾向内磁层的过渡区和电离层--集中讨论了这一问题。地球空间环境模型界正在共同努力，以了解磁尾中的中尺度输送在多大程度上有助于全球磁通量输送和偶极、有助于风暴时环流发展的粒子输送和注入以及亚暴电流楔形。由于磁层-电离层是一个紧密耦合的系统，了解磁尾的中尺度输送如何影响极光降水和全球电离层系统的反应也很重要。大气区域耦合、能量和动力学计划(CEDAR)社区内的小组也一直在研究电离层-热层对这些中尺度驱动因素的响应。这些具体的悬而未决的问题是更好地描述和量化中尺度信息--磁通量、粒子通量、电流和能量--的“信使”或“管道”的更大需求的一部分，这些信息是理解全球系统的关键。在回顾了最近的进展和有待解决的问题后，我们建议使用如果在未来开发的数据集，这些数据集将有助于回答这些问题。

An important question that is being increasingly studied across subdisciplines of Heliophysics is “how do mesoscale phenomena contribute to the global response of the system?” This review paper focuses on this question within two specific but interlinked regions in Near-Earth space: the magnetotail’s transition region to the inner magnetosphere and the ionosphere. There is a concerted effort within the Geospace Environment Modeling (GEM) community to understand the degree to which mesoscale transport in the magnetotail contributes to the global dynamics of magnetic flux transport and dipolarization, particle transport and injections contributing to the storm-time ring current development, and the substorm current wedge. Because the magnetosphere-ionosphere is a tightly coupled system, it is also important to understand how mesoscale transport in the magnetotail impacts auroral precipitation and the global ionospheric system response. Groups within the Coupling, Energetics and Dynamics of Atmospheric Regions Program (CEDAR) community have also been studying how the ionosphere-thermosphere responds to these mesoscale drivers. These specific open questions are part of a larger need to better characterize and quantify mesoscale “messengers” or “conduits” of information—magnetic flux, particle flux, current, and energy—which are key to understanding the global system. After reviewing recent progress and open questions, we suggest datasets that, if developed in the future, will help answer these questions.

Mesoscale phenomena and their contribution to the global response: a focus on the magnetotail transition region and magnetosphere-ionosphere coupling

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