Characteristics of Mesospheric Gravity Waves Near the Magnetic Equator, Brazil, During the SpreadFEx Campaign

Authors

Michael J. Taylor, Utah State UniversityFollow
Pierre-Dominique Pautet, Utah State UniversityFollow
A. F. Medeiros
R. Buriti
J. Fechine
D. C. Fritts
S. L. Vadas
H. Takahashi
F. T. São Sabbas

Document Type

Article

Journal/Book Title/Conference

Annales Geophysicae

Volume

27

Issue

2

Publisher

European Geosciences Union

Publication Date

2-2009

First Page

461

Last Page

472

Abstract

As part of the SpreadFEx campaign, coordinated optical and radio measurements were made from Brazil to investigate the occurrence and properties of equatorial Spread F, and to characterize the regional mesospheric gravity wave field. All-sky image measurements were made from two sites: Brasilia and Cariri located ~10° S of the magnetic equator and separated by ~1500 km. In particular, the observations from Brasilia provided key data in relatively close proximity to expected convective sources of the gravity waves. High-quality image measurements of the mesospheric OH emission and the thermospheric OI (630 nm) emission were made during two consecutive new moon periods (22 September to 9 November 2005) providing extensive data on the occurrence and properties of F-region depletions and regional measurements of the dominant gravity wave characteristics at each site.

Comments

Published by European Geosciences Union in Annales Geophysicae.

http://www.ann-geophys.net/27/461/2009/angeo-27-461-2009.html

Publisher PDF is available for download through the link above.

Recommended Citation

Taylor, M.J., P.-D. Pautet, A.F. Medeiros, R. Buriti, J. Fechine, D.C. Fritts, S.L. Vadas, H. Takahashi, and F.T. Sao Sabbas, Characteristics of mesospheric gravity waves near the magnetic equator, Brazil, during the SpreadFEx campaign, Ann. Geophys. 27, 461-472, 2009.