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Tidal Signatures in Mesospheric Turbulence : Volume 24, Issue 2 (23/03/2006)

By Hall, C. M.

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Book Id: WPLBN0004001438
Format Type: PDF Article :
File Size: Pages 13
Reproduction Date: 2015

Title: Tidal Signatures in Mesospheric Turbulence : Volume 24, Issue 2 (23/03/2006)  
Author: Hall, C. M.
Volume: Vol. 24, Issue 2
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Meek, C. E., Nozawa, S., Manson, A. H., & Hall, C. M. (2006). Tidal Signatures in Mesospheric Turbulence : Volume 24, Issue 2 (23/03/2006). Retrieved from http://www.ebooklibrary.org/


Description
Description: Tromsø Geophysical Observatory, University of Tromsø, 9037 Tromsø, Norway. We search for the presence of tidal signatures in high latitude mesospheric turbulence as parameterized by turbulent energy dissipation rate estimated using a medium frequency radar, quantifying our findings with the aid of correlation analyses. A diurnal periodicity is not particularly evident during the winter and spring months but is a striking feature of the summer mesopause. While semidiurnal variation is present to some degree all year round, it is particularly pronounced in winter. We find that the maximum in the summer 24-h variation corresponds to that of the westward phase of the diurnal tide, and that the maximum in the winter 12 h variation corresponds to that of the southward phase of the semidiurnal tide. This information is used to infer the horizontal propagation direction of gravity waves: during the summer the eastward direction is consistent with closure of the summer vortex, while in winter the inferred directions require more complex arguments.

Summary
Tidal signatures in mesospheric turbulence

 

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