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The Utility of Auroral Image-based Activities MetricsAuroral activity indices such as Hemispheric Power and Auroral Boundary are currently key data products used for space weather predictions and nowcasting. However, these products are necessarily based on limited observations which must be extrapolated to provide global coverage. The advent of routine space-based auroral imaging in the last decade offers the seeming advantage of more detailed measures of auroral activity. Examples of image-derived products include energy deposition maps, oval location, cap size, and morphological classification. However, activity metrics derived from auroral images have shortcomings, as well. For example, limited fields-of-view and orbital motion prevent full coverage of the auroral regions. This paper will examine the utility of activity metrics derived h m auroral images for operational purposes. The eight-year collection of Polar UVI images databased in the UVI Online Search Tool (OST) will be used to illustrate the advantages and shortcomings of auroral activity metrics. The potential role of other currently-active imaging missions will also be examined and correlative studies to date using auroral imaging will be summarized.
Document ID
20050110156
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Germany, G.
(Alabama Univ. Huntsville, AL, United States)
Spann, J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Deverapalli, C.
(Alabama Univ. Huntsville, AL, United States)
Hung, C.-C.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Geophysics
Meeting Information
Meeting: Fall AGU 2004 Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 13, 2004
End Date: December 17, 2004
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Other

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