The geospace response to variable inputs from the lower atmosphere:a review of the progress made by Task Group 4 of CAWSES-II

Oberheide, Jens and Shiokawa, Kazuo and Gurubaran, Subramanian and Ward, William E and Fujiwara, Hitoshi and Kosch, Michael J. and Makela, Jonathan J and Takahashi, Hisao (2015) The geospace response to variable inputs from the lower atmosphere:a review of the progress made by Task Group 4 of CAWSES-II. Progress in Earth and Planetary Science, 2 (1). ISSN 2197-4284

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Abstract

The advent of new satellite missions, ground-based instrumentation networks, and the development of whole atmosphere models over the past decade resulted in a paradigm shift in understanding the variability of geospace, that is, the region of the atmosphere between the stratosphere and several thousand kilometers above ground where atmosphere-ionosphere-magnetosphere interactions occur. It has now been realized that conditions in geospace are linked strongly to terrestrial weather and climate below, contradicting previous textbook knowledge that the space weather of Earth's near space environment is driven by energy injections at high latitudes connected with magnetosphere-ionosphere coupling and solar radiation variation at extreme ultraviolet wavelengths alone. The primary mechanism through which energy and momentum are transferred from the lower atmosphere is through the generation, propagation, and dissipation of atmospheric waves over a wide range of spatial and temporal scales including electrodynamic coupling through dynamo processes and plasma bubble seeding. The main task of Task Group 4 of SCOSTEP's CAWSES-II program, 2009 to 2013, was to study the geospace response to waves generated by meteorological events, their interaction with the mean flow, and their impact on the ionosphere and their relation to competing thermospheric disturbances generated by energy inputs from above, such as auroral processes at high latitudes. This paper reviews the progress made during the CAWSES-II time period, emphasizing the role of gravity waves, planetary waves and tides, and their ionospheric impacts. Specific campaign contributions from Task Group 4 are highlighted, and future research directions are discussed.

Item Type:
Journal Article
Journal or Publication Title:
Progress in Earth and Planetary Science
Additional Information:
© 2015 Oberheide et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
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ID Code:
78602
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Deposited On:
16 May 2016 12:10
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Apr 2020 03:52