The Impact of Adaptive High-Latitude Coordinates

Chisham, Gareth ORCID: https://orcid.org/0000-0003-1151-5934; Burrell, Angeline G.; Zawdie, Kate A.. 2025 The Impact of Adaptive High-Latitude Coordinates. Geophysical Research Letters, 52 (16), e2025GL115265. 10, pp.

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Abstract/Summary

The high-latitude ionosphere can be divided into three regions dominated by different types of coupling and characterized by distinctive behaviors. These are the polar cap, the auroral region, and the sub-auroral region. Their locations are highly variable, changing in extent in response to driving conditions in the solar wind and within the magnetosphere. We discuss how defining high-latitude coordinates relative to the boundaries between these physically significant regions (adaptive co-ordinates) has major implications for statistical studies, modeling applications, and research combining magnetospheric and ionospheric data. We explore the impact of using adaptive co-ordinates for statistical analyses of ionospheric vorticity, showing how using adaptive co-ordinate systems provides a clearer picture of the latitudinal variation of vorticity, and how peaks and troughs in vorticity relate to the boundary locations.

Item Type:	Publication - Article
ISSN:	00948276
Additional Keywords:	adaptive coordinates, ionosphere, auroral boundaries, SuperDARN, vorticity
NORA Subject Terms:	Space Sciences Atmospheric Sciences
Date made live:	18 Aug 2025 09:28 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/538888

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