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Statistical investigation of Na layer response to geomagnetic activity using resonance scattering measurements by Odin/OSIRIS
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Number of Authors: 8
2017 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 44, no 12, 5943-5950 p.Article in journal (Refereed) Published
Abstract [en]

We have performed a statistical investigation of the global response of the Na layer to geomagnetic activity using Na density data from 2004 to 2010 obtained using the Optical Spectrograph and Infrared Imager System (OSIRIS) on board the Odin satellite. In the analysis, we categorized the Na density data according to the auroral electrojet (AE) index and then compared the resulting data sets. Regarding the results, we found a significant decrease in the Na density above a height of similar to 95 km in both the southern and northern polar regions with an increase in the AE index. The cause of the decrease in the Na density is discussed, and we conclude that the decrease in the Na density was mainly due to the effect of energetic particle precipitation.

Place, publisher, year, edition, pages
2017. Vol. 44, no 12, 5943-5950 p.
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-145824DOI: 10.1002/2017GL072801ISI: 000405854200009OAI: oai:DiVA.org:su-145824DiVA: diva2:1136525
Available from: 2017-08-28 Created: 2017-08-28 Last updated: 2017-08-28Bibliographically approved

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Gumbel, JörgHedin, Jonas
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