4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

Thermospheric neutral density observations by radar

6 Jul 2016, 15:20
20m
5B (Kramer Law building)

5B

Kramer Law building

UCT Middle Campus Cape Town
Oral Presentation Track D2 - Space Science Space Science

Speaker

Prof. Michael Kosch (SANSA)

Main supervisor (name and email)<br>and his / her institution

N/A

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

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N/A

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Radars are sensitive to backscatter from the ionosphere, i.e. the charged component of the upper-atmosphere, and are normally completely insensitive to the thermosphere, i.e. the dominant neutral component of the upper-atmosphere. Manipulation of the ion-momentum equation permits the ion-neutral collision frequency to be estimated and hence from this the neutral density. We show examples for two basic geometries: (1) Parallel to the magnetic field using incoherent scatter radar, and (2) Perpendicular to the magnetic field using coherent scatter radars. Applications include the long-term trend due to climate change and the short-term variability due to solar storms.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

No

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No

Primary author

Prof. Michael Kosch (SANSA)

Co-authors

Ms Lois Sarno-Smith (University of Michigan) Dr Mike Rietveld (EISCAT Scientific Association) Prof. Tim Yeoman (University of Leicester) Dr Yasunobu Ogawa (National Institute of Polar Research) Dr Yosuke Yamazaki (Lancaster University)

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