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  Tidal wind shear observed by meteor radar and comparison with sporadic E occurrence rates based on GPS radio occultation observations

Jacobi, C., Arras, C. (2019): Tidal wind shear observed by meteor radar and comparison with sporadic E occurrence rates based on GPS radio occultation observations. - Advances in Radio Science, 17, 213-224.
https://doi.org/10.5194/ars-17-213-2019

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000477 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000477_1
Genre: Journal Article

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 Creators:
Jacobi, Christoph1, Author
Arras, Christina2, Author              
Affiliations:
1External Organizations, ou_persistent22              
21.1 Space Geodetic Techniques, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146025              

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 Abstract: We analyze tidal (diurnal, semidiurnal, terdiurnal, quarterdiurnal) phases and related wind shear in the mesosphere/lower thermosphere as observed by meteor radar over Collm (51.3∘ N, 13.0∘ E). The wind shear phases are compared with those of sporadic E (Es) occurrence rates, which were derived from GPS radio occultation signal-to-noise ratio (SNR) profiles measured by the COSMIC/FORMOSAT-3 satellites. At middle latitudes Es are mainly produced by wind shear, which, in the presence of a horizontal component of the Earth's magnetic field, leads to ion convergence in the region where the wind shear is negative. Consequently, we find good correspondence between radar derived wind shear and Es phases for the semidiurnal, terdiurnal, and quarterdiurnal tidal components. The diurnal tidal wind shear, however, does not correspond to the Es diurnal signal.

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Language(s): eng - English
 Dates: 2019-09-192019
 Publication Status: Finally published
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 Identifiers: DOI: 10.5194/ars-17-213-2019
GFZPOF: p3 PT6 Atmo
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Title: Advances in Radio Science
Source Genre: Journal, Scopus, p3, oa
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Pages: - Volume / Issue: 17 Sequence Number: - Start / End Page: 213 - 224 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals2_15