M
Marcio T. A. H. Muella
Researcher at University of Paraíba Valley
Publications - 58
Citations - 939
Marcio T. A. H. Muella is an academic researcher from University of Paraíba Valley. The author has contributed to research in topics: Ionosphere & TEC. The author has an hindex of 17, co-authored 56 publications receiving 724 citations. Previous affiliations of Marcio T. A. H. Muella include Cornell University & National Institute for Space Research.
Papers
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Journal ArticleDOI
GPS L-band scintillations and ionospheric irregularity zonal drifts inferred at equatorial and low-latitude regions
Marcio T. A. H. Muella,E. R. de Paula,I. J. Kantor,Inez S. Batista,J. H. A. Sobral,M. A. Abdu,Paul M. Kintner,Keith M. Groves,P.F. Smorigo +8 more
TL;DR: In this article, amplitude scintillations at the L-band, total electron content (TEC) and irregularity drifts were measured, as part of the Conjugate Point Equatorial Experiment (COPEX) campaign, by a network of ground-based global positioning system (GPS) receivers.
Journal ArticleDOI
Ionospheric zonal velocities at conjugate points over Brazil during the COPEX campaign: Experimental observations and theoretical validations
J. H. A. Sobral,M. A. Abdu,Todd Pedersen,Vivian M. Castilho,Daniela C. S. Arruda,Marcio T. A. H. Muella,Inez S. Batista,M. Mascarenhas,E. R. de Paula,Paul M. Kintner,E. A. Kherani,Amauri Fragoso de Medeiros,Ricardo Buriti,H. Takahashi,Nelson Jorge Schuch,Clezio Marcos Denardini,C.J. Zamlutti,A. A. Pimenta,J.R. de Souza,F. Bertoni +19 more
TL;DR: In this article, the velocities of large-scale ionospheric plasma depletions over two conjugate stations inferred from OI 630 nm airglow all-sky images obtained during the Conjugate Point Equatorial Experiment (COPEX) campaign carried out in Brazil between October and November 2002 were analyzed.
Journal ArticleDOI
Scintillation‐producing Fresnel‐scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly
Marcio T. A. H. Muella,Marcio T. A. H. Muella,E. A. Kherani,E. R. de Paula,Alessandro P. Cerruti,Paul M. Kintner,I. J. Kantor,Cathryn N. Mitchell,Inez S. Batista,M. A. Abdu +9 more
TL;DR: In this paper, the authors used ground-based GPS and digital ionosonde instruments to build up at latitudes of the equatorial ionization anomaly (EIA), in the Brazilian sector, a time-evolving picture of total electron content (TEC), L-band amplitude scintillations, and F region heights, and investigated likely reasons for the occurrence or suppression of equatorial scintillation during the disturbed period of 18-23 November 2003.
Occurrence and zonal drifts of small-scale ionospheric irregularities over an equatorial station during solar maximum
TL;DR: In this article, a statistical study of L-band amplitude scintillations and zonal drift velocity of Fresnel-scale ionospheric irregularities is presented, and the results reveal that for the near overhead ionosphere (satellite elevation angle >45°) a broad maximum in the occurrence of scintillation is seen from October to February.
Journal ArticleDOI
Low-latitude scintillation weakening during sudden stratospheric warming events
E. R. de Paula,O. F. Jonah,Alison de Oliveira Moraes,E. A. Kherani,Bela G. Fejer,M. A. Abdu,Marcio T. A. H. Muella,I. S. Batista,S. L. G. Dutra,R. R. Paes +9 more
TL;DR: In this paper, the authors analyzed the effect of sudden stratospheric warming (SSW) on the global positioning system (GPS) L1-frequency (1.575 GHz) amplitude scintillations at Sao Jose dos Campos (23.1°S, 45.8°W, dip latitude 17.3°S).