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Study of day-to-day variability of the mesosphere, thermosphere and ionosphere at low latitude and equatorial region, during the solar cycle 24

Grant number: 12/08445-9
Support type:Research Projects - Thematic Grants
Duration: March 01, 2013 - February 28, 2019
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geophysics
Principal Investigator:Paulo Roberto Fagundes
Grantee:Paulo Roberto Fagundes
Home Institution: Instituto de Pesquisa e Desenvolvimento (IP&D). Universidade do Vale do Paraíba (UNIVAP). São José dos Campos , SP, Brazil
Co-Principal Investigators:Clezio Marcos De Nardin
Assoc. researchers:Alan Prestes ; Alessandra Abe Pacini ; Alexandre Alvares Pimenta ; Caius Lucius Selhorst ; Francisco Carlos Rocha Fernandes ; JOSÉ AUGUTO BITTENCOURT ; José Ricardo Abalde Guede ; Marcio Tadeu de Assis Honorato Muella ; Marlos Rockenbach da Silva ; Maurício José Alves Bolzam ; Washington Luiz Carvalho Lima ; Yogeshwar Sahai
Associated grant(s):18/04187-1 - Committee on Space Research - COSPAR 2018, AR.EXT
16/20520-7 - AGU Fall Meeting 2016, AR.EXT
14/09583-1 - 40th COSPAR Scientific Assembly, AR.EXT
Associated scholarship(s):18/10679-4 - The study of planetary and lunar tide waves interaction in the ionosphere, BP.DR
16/10495-5 - Study of ionosphere and thermosphere during extreme space weather conditions during the descending phase of solar cycle 24 (2015, 2016 and 2017), BP.DR
15/24791-2 - Study of ionospheric f layer multiple stratification near equatorial region and low latitude, BP.PD
 + associated scholarships 14/10124-1 - Thermosphere and ionosphere coupling during geomagnetic disturbed periods in the low-latitude and equatorial region, during the solar cycle 24, BP.MS
13/25037-4 - Study of F3 layer and sudden stratospheric warming effects in low-latitude ionosphere and equatorial region, during solar cycle 24, BP.PD
13/20494-8 - Study of the polarized decametric radio emission measured by RIOMETERS, BP.IC
13/09274-6 - Diagnosis of precursor phase of solar flares based on the identification and the analysis of metric emissions recorded by CALLISTO-BR, BP.IC - associated scholarships

Abstract

The main purpose of this project is study day-to-day variability of the dynamics upper atmosphere (mesosphere and thermosphere) and ionosphere electrodynamics, during the solar cycle 24, at low-latitudes and equatorial region, Brazilian sector, using a network of four observatories. Also, complementary data from other sectors and satellite data will be used in this project. The following topics will be study: a) Mesosphere-thermosphere, thermosphere-ionosphere, magnetosphere-thermosphere-ionosphere coupling during geomagnetic quiet and disturbed periods, b) Gravity waves and planetary waves propagations at mesosphere and thermosphere, c) Travelling Ionospheric Disturbances (TIDs) and Meso-Scale Travelling Ionospheric Disturbances (MSTIDs) propagation at ionospheric heights, d) Equatorial Large scale and bottom side ionospheric irregularities generation, evolution and propagation studies, e) Ionospheric F3 layer studies at equatorial and low-latitude regions; f) Ionospheric and upper atmospheric signatures of sudden stratospheric warming at equatorial and lo-latitude region, g) Study of the equatorial eletroject and counter eletroject in the American sector. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
New network is installed to investigate space weather over South America  

Scientific publications (55)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CONCEICAO-SANTOS, FREDSON; MUELLA, MARCIO T. A. H.; RESENDE, LAYSA C. A.; FAGUNDES, PAULO R.; ANDRIOLI, VANIA F.; BATISTA, PAULO P.; CARRASCO, ALEXANDER J. On the role of tidal winds in the descending of the high type of sporadic layer (Es-h). Advances in Space Research, v. 65, n. 9, SI, p. 2131-2147, MAY 1 2020. Web of Science Citations: 0.
ANDRIOLI, V. F.; XU, J.; BATISTA, P. P.; PIMENTA, A. A.; RESENDE, L. C. A.; SAVIO, S.; FAGUNDES, P. R.; YANG, G.; JIAO, J.; CHENG, X.; WANG, C.; LIU, Z. Nocturnal and Seasonal Variation of Na and K Layers Simultaneously Observed in the MLT Region at 23 degrees S. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 125, n. 3 MAR 2020. Web of Science Citations: 0.
CONCEICAO-SANTOS, FREDSON; MUELLA, MARCIO T. A. H.; RESENDE, LAYSA C. A.; FAGUNDES, PAULO R.; ANDRIOLI, VANIA F.; BATISTA, PAULO P.; PILLAT, VALDIR G.; CARRASCO, ALEXANDER J. Occurrence and Modeling Examination of Sporadic-E Layers in the Region of the South America (Atlantic) Magnetic Anomaly. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 124, n. 11 NOV 2019. Web of Science Citations: 0.
RIBEIRO, B. A. G.; FAGUNDES, P. R.; VENKATESH, K.; TARDELLI, A.; PILLAT, V. G.; SEEMALA, G. K. Equatorial and low-latitude positive ionospheric phases due to moderate geomagnetic storm during high solar activity in January 2013. Advances in Space Research, v. 64, n. 4, p. 995-1010, AUG 15 2019. Web of Science Citations: 0.
SILVA, R. P.; SOUZA, J. R.; SOBRAL, J. H. A.; DENARDINI, C. M.; BORBA, G. L.; SANTOS, M. A. F. Ionospheric Plasma Bubble Zonal Drift Derived From Total Electron Content Measurements. RADIO SCIENCE, v. 54, n. 7, p. 580-589, JUL 2019. Web of Science Citations: 0.
VENKATESH, K.; PATRA, A. K.; BALAN, N.; FAGUNDES, P. R.; RAM, S. TULASI; BATISTA, I. S.; REINISCH, B. W. Superfountain Effect Linked With 17 March 2015 Geomagnetic Storm Manifesting Distinct F-3 Layer. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 124, n. 7, p. 6127-6137, JUL 2019. Web of Science Citations: 1.
DE ABREU, A. J.; ROBERTO, M.; ALVES, M. A.; ABALDE, J. R.; NOGUEIRA, P. A. B.; VENKATESH, K.; FAGUNDES, P. R.; DE JESUS, R.; GENDE, M.; MARTIN, I. M. Effects of X2-class solar flare events on ionospheric GPS-TEC and radio waves over Brazilian sector. Advances in Space Research, v. 63, n. 11, p. 3586-3605, JUN 1 2019. Web of Science Citations: 0.
BARBOSA, F. R. E.; FAGUNDES, P. R.; VENKATESH, K.; FEJER, B. G.; PILLAT, V. G.; DENARDINI, C. M.; MUELLA, M. T. A. H. Multi-scale ionospheric irregularities occurrence over South America during the St. Patrick's day storm on March 17, 2015. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 174, p. 32-45, SEP 2018. Web of Science Citations: 1.
BOLZAN, MAURICIO J. A.; DENARDINI, CLEZIO M.; TARDELLI, ALEXANDRE. Comparison of H component geomagnetic field time series obtained at different sites over South America. Annales Geophysicae, v. 36, n. 3, p. 937-943, JUN 26 2018. Web of Science Citations: 0.
ARAUJO RESENDE, LAYSA CRISTINA; BATISTA, INEZ STACIARINI; DENARDINI, CLEZIO MARCOS; BATISTA, PAULO PRADO; CARRASCO, ALEXANDER JOSE; ANDRIOLI, VANIA FATIMA; MORO, JULIANO. The influence of tidal winds in the formation of blanketing sporadic e-layer over equatorial Brazilian region. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 171, n. SI, p. 64-71, JUN 2018. Web of Science Citations: 4.
RESENDE, LAYSA C. A.; ARRAS, CHRISTINA; BATISTA, INEZ S.; DENARDINI, CLEZIO M.; BERTOLLOTTO, THAINA O.; MORO, JULIANO. Study of sporadic E layers based on GPS radio occultation measurements and digisonde data over the Brazilian region. Annales Geophysicae, v. 36, n. 2, p. 587-593, APR 3 2018. Web of Science Citations: 4.
DENARDINI, C. M.; CHEN, S. S.; RESENDE, L. C. A.; MORO, J.; BILIBIO, A. V.; FAGUNDES, P. R.; GENDE, M. A.; CABRERA, M. A.; BOLZAN, M. J. A.; PADILHA, A. L.; SCHUCH, N. J.; HORMAECHEA, J. L.; ALVES, L. R.; BARBOSA NETO, P. F.; NOGUEIRA, P. A. B.; PICANCO, G. A. S.; BERTOLLOTTO, T. O. The Embrace Magnetometer Network for South America: First Scientific Results. RADIO SCIENCE, v. 53, n. 3, p. 379-393, MAR 2018. Web of Science Citations: 3.
DENARDINI, C. M.; CHEN, S. S.; RESENDE, L. C. A.; MORO, J.; BILIBIO, A. V.; FAGUNDES, P. R.; GENDE, M. A.; CABRERA, M. A.; BOLZAN, M. J. A.; PADILHA, A. L.; SCHUCH, N. J.; HORMAECHEA, J. L.; ALVES, L. R.; BARBOSA NETO, P. F.; NOGUEIRA, P. A. B.; PICANCO, G. A. S.; BERTOLLOTTO, T. O. The Embrace Magnetometer Network for South America: Network Description and Its Qualification. RADIO SCIENCE, v. 53, n. 3, p. 288-302, MAR 2018. Web of Science Citations: 5.
TARDELLI, A.; PEZZOPANE, M.; FAGUNDES, P. R.; VENKATESH, K.; PILLAT, V. G.; CABRERA, M. A.; EZQUER, R. G. Study of the F3 and StF4 Layers at Tucuman Near the Southern Crest of the Equatorial Ionization Anomaly in Western South America. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 123, n. 3, p. 2156-2167, MAR 2018. Web of Science Citations: 5.
NOGUEIRA, PAULO A. B.; ABDU, MANGALATHAYIL A.; SOUZA, JONAS R.; DENARDINI, CLEZIO M.; BARBOSA NETO, PAULO F.; SERRA DE SOUZA DA COSTA, JOAO P.; SILVA, ANA P. M. Latitude-dependent delay in the responses of the equatorial electrojet and S-q currents to X-class solar flares. Annales Geophysicae, v. 36, n. 1, p. 139-147, JAN 25 2018. Web of Science Citations: 2.
PERNA, L.; VENKATESH, K.; PILLAT, V. G.; PEZZOPANE, M.; FAGUNDES, P. R.; EZQUER, R. G.; CABRERA, M. A. Bottom side profiles for two close stations at the southern crest of the EIA: Differences and comparison with IRI-2012 and NeQuick2 for low and high solar activity. Advances in Space Research, v. 61, n. 1, p. 295-315, JAN 1 2018. Web of Science Citations: 1.
MORO, J.; RESENDE, L. C. A.; DENARDINI, C. M.; XU, J.; BATISTA, I. S.; ANDRIOLI, V. F.; CARRASCO, A. J.; BATISTA, P. P.; SCHUCH, N. J. Equatorial E Region Electric Fields and Sporadic E Layer Responses to the Recovery Phase of the November 2004 Geomagnetic Storm. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 122, n. 12, p. 12517-12533, DEC 2017. Web of Science Citations: 1.
DE JESUS, R.; BATISTA, I. S.; JONAH, O. F.; DE ABREU, A. J.; FAGUNDES, P. R.; VENKATESH, K.; DENARDINI, C. M. An Investigation of the Ionospheric Disturbances Due to the 2014 Sudden Stratospheric Warming Events Over Brazilian Sector. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 122, n. 11, p. 11698-11715, NOV 2017. Web of Science Citations: 1.
DE JESUS, R.; BATISTA, I. S.; DE ABREU, A. J.; FAGUNDES, P. R.; VENKATESH, K.; DENARDINI, C. M. Observed effects in the equatorial and low-latitude ionosphere in the South American and African sectors during the 2012 minor sudden stratospheric warming. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 157, p. 78-89, MAY 2017. Web of Science Citations: 5.
VENKATESH, K.; RAM, S. TULASI; FAGUNDES, P. R.; SEEMALA, GOPI K.; BATISTA, I. S. Electrodynamic disturbances in the Brazilian equatorial and low-latitude ionosphere on St. Patrick's Day storm of 17 March 2015. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 122, n. 4, p. 4553-4570, APR 2017. Web of Science Citations: 13.
KLAUSNER, V.; ALMEIDA, T.; DE MENESES, F. C.; KHERANI, E. A.; PILLAT, V. G.; MUELLA, M. T. A. H.; FAGUNDES, P. R. First Report on Seismogenic Magnetic Disturbances over Brazilian Sector. PURE AND APPLIED GEOPHYSICS, v. 174, n. 3, p. 737-745, MAR 2017. Web of Science Citations: 1.
ARAUJO RESENDE, LAYSA CRISTINA; BATISTA, INEZ STACIARINI; DENARDINI, CLEZIO MARCOS; BATISTA, PAULO PRADO; CARRASCO, ALEXANDER JOSE; ANDRIOLI, VANIA DE FATIMA; MORO, JULIANO. Simulations of blanketing sporadic E-layer over the Brazilian sector driven by tidal winds. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 154, p. 104-114, FEB 2017. Web of Science Citations: 6.
DE JESUS, R.; BATISTA, I. S.; FAGUNDES, P. R.; VENKATESH, K.; DE ABREU, A. J. Ionospheric response to the 2006 sudden stratospheric warming event over the equatorial and low latitudes in the Brazilian sector using GPS observations. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 154, p. 92-103, FEB 2017. Web of Science Citations: 4.
VIEIRA, F.; FAGUNDES, P. R.; VENKATESH, K.; GONCHARENKO, L. P.; PILLAT, V. G. Total electron content disturbances during minor sudden stratospheric warming, over the Brazilian region: A case study during January 2012. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 122, n. 2, p. 2119-2135, FEB 2017. Web of Science Citations: 4.
DE ABREU, ALESSANDRO JOSE; MARTIN, INACIO MALMONGE; DE JESUS, RODOLFO; ALVES BOLZAN, MAURICIO JOSE; VENKATESH, KAVUTARAPU; FAGUNDES, PAULO ROBERTO; ALVES, MAURO ANGELO; GENDE, MAURICIO; KUMAR, SANJAY. Comparison of GPS-TEC measurements with IRI2012-TEC predictions in the Brazilian sector during the unusual solar minimum 2009. ANNALS OF GEOPHYSICS, v. 60, n. 3 2017. Web of Science Citations: 6.
ARAUJO RESENDE, LAYSA CRISTINA; BATISTA, INEZ STACIARINI; DENARDINI, CLEZIO MARCOS; CARRASCO, ALEXANDER JOSE; ANDRIOLI, VANIA DE FATIMA; MORO, JULIANO; BATISTA, PAULO PRADO; CHEN, SONY SU. Competition between winds and electric fields in the formation of blanketing sporadic E layers at equatorial regions. EARTH PLANETS AND SPACE, v. 68, DEC 1 2016. Web of Science Citations: 7.
TARDELLI, A.; FAGUNDES, P. R.; PEZZOPANE, M.; VENKATESH, K.; PILLAT, V. G. Seasonal and solar activity variations of F-3 layer and quadruple stratification (StF-4) near the equatorial region. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 121, n. 12, p. 12116-12125, DEC 2016. Web of Science Citations: 5.
TAKAHASHI, H.; WRASSE, C. M.; DENARDINI, C. M.; PADUA, M. B.; DE PAULA, E. R.; COSTA, S. M. A.; OTSUKA, Y.; SHIOKAWA, K.; GALERA MONICO, J. F.; IVO, A.; SANT'ANNA, N. Ionospheric TEC Weather Map Over South America. SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, v. 14, n. 11, p. 937-949, NOV 2016. Web of Science Citations: 13.
MORO, J.; DENARDINI, C. M.; RESENDE, L. C. A.; CHEN, S. S.; SCHUCH, N. J. Equatorial E region electric fields at the dip equator: 1. Variabilities in eastern Brazil and Peru. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 121, n. 10, p. 10220-10230, OCT 2016. Web of Science Citations: 3.
MORO, J.; DENARDINI, C. M.; RESENDE, L. C. A.; CHEN, S. S.; SCHUCH, N. J. Equatorial E region electric fields at the dip equator: 2. Seasonal variabilities and effects over Brazil due to the secular variation of the magnetic equator. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 121, n. 10, p. 10231-10239, OCT 2016. Web of Science Citations: 2.
VENKATESH, K.; FAGUNDES, P. R.; DE ABREU, A. J.; PILLAT, V. G. Unusual noon-time bite-outs in the ionospheric electron density around the anomaly crest locations over the Indian and Brazilian sectors during quiet conditions - A case study. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 147, p. 126-137, SEP 2016. Web of Science Citations: 1.
MORO, JULIANO; DENARDINI, CLEZIO MARCOS; ARAUJO RESENDE, LAYSA CRISTINA; CHEN, SONY SU; SCHUCH, NELSON JORGE. Influence of uncertainties of the empirical models for inferring the E-region electric fields at the dip equator. EARTH PLANETS AND SPACE, v. 68, JUN 7 2016. Web of Science Citations: 6.
FAGUNDES, P. R.; CARDOSO, F. A.; FEJER, B. G.; VENKATESH, K.; RIBEIRO, B. A. G.; PILLAT, V. G. Positive and negative GPS-TEC ionospheric storm effects during the extreme space weather event of March 2015 over the Brazilian sector. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 121, n. 6, p. 5613-5625, JUN 2016. Web of Science Citations: 20.
SANTOS, A. M.; ABDU, M. A.; SOUZA, J. R.; SOBRAL, J. H. A.; BATISTA, I. S.; DENARDINI, C. M. Storm time equatorial plasma bubble zonal drift reversal due to disturbance Hall electric field over the Brazilian region. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 121, n. 6, p. 5594-5612, JUN 2016. Web of Science Citations: 6.
DENARDINI, CLEZIO MARCOS; ARAUJO RESENDE, LAYSA CRISTINA; MORO, JULIANO; CHEN, SONY SU. Occurrence of the blanketing sporadic E layer during the recovery phase of the October 2003 superstorm. EARTH PLANETS AND SPACE, v. 68, MAY 14 2016. Web of Science Citations: 2.
CUNHA-SILVA, R. D.; FERNANDES, F. C. R.; SELHORST, C. L. Shock wave driven by CME evidenced by metric type II burst and EUV wave. Advances in Space Research, v. 56, n. 12, p. 2804-2810, DEC 15 2015. Web of Science Citations: 1.
PILLAT, VALDIR GIL; FAGUNDES, PAULO ROBERTO; FRUTUOSO GUIMARAES, LARNARTINE NOGUEIRA. Automatically identification of Equatorial Spread-F occurrence on ionograms. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 135, p. 118-125, DEC 2015. Web of Science Citations: 3.
DUARTE-SILVA, MARCELO H.; MUELLA, MARCIO T. A. H.; SILVA, LIDIANNE C. C.; DE ABREU, ALESSANDRO J.; FAGUNDES, PAULO R. Ionospheric slab thickness at the equatorial anomaly region after the deep solar minimum of cycle 23/24. Advances in Space Research, v. 56, n. 9, p. 1961-1972, NOV 1 2015. Web of Science Citations: 4.
DENARDINI, C. M.; MORO, J.; RESENDE, L. C. A.; CHEN, S. S.; SCHUCH, N. J.; COSTA, J. E. R. E region electric field dependence of the solar activity. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 120, n. 10, p. 8934-8941, OCT 2015. Web of Science Citations: 6.
VENKATESH, K.; FAGUNDES, P. R.; PRASAD, D. S. V. V. . D.; DENARDINI, C. M.; DE ABREU, A. J.; DE JESUS, R.; GENDE, M. Day-to-day variability of equatorial electrojet and its role on the day-to-day characteristics of the equatorial ionization anomaly over the Indian and Brazilian sectors. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 120, n. 10, p. 9117-9131, OCT 2015. Web of Science Citations: 20.
FAGUNDES, P. R.; GONCHARENKO, L. P.; DE ABREU, A. J.; VENKATESH, K.; PEZZOPANE, M.; DE JESUS, R.; GENDE, M.; COSTER, A. J.; PILLAT, V. G. Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 120, n. 9, p. 7889-7902, SEP 2015. Web of Science Citations: 16.
CUNHA-SILVA, R. D.; FERNANDES, F. C. R.; SELHORST, C. L. Solar type II radio bursts associated with CME expansions as shown by EUV waves. Astronomy & Astrophysics, v. 578, JUN 2015. Web of Science Citations: 8.
NOGUEIRA, P. A. B.; SOUZA, J. R.; ABDU, M. A.; PAES, R. R.; SOUSASANTOS, J.; MARQUES, M. S.; BAILEY, G. J.; DENARDINI, C. M.; BATISTA, I. S.; TAKAHASHI, H.; CUEVA, R. Y. C.; CHEN, S. S. Modeling the equatorial and low-latitude ionospheric response to an intense X-class solar flare. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 120, n. 4, p. 3021-3032, APR 2015. Web of Science Citations: 12.
VENKATESH, K.; RAO, P. V. S. RAMA; SEEMALA, GOPI K.; PRASAD, D. S. V. V. D. Latitudinal variation in the occurrence of GPS L-band scintillations associated with the day-to-day changes in TEC, h'F and the ExB drift velocity and their impact on GPS satellite signals. Journal of Earth System Science, v. 124, n. 3, p. 497-513, APR 2015. Web of Science Citations: 2.
TARDELLI, A.; FAGUNDES, P. R. Observations of ionospheric F layer quadruple stratification near equatorial region. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 120, n. 1, p. 834-840, JAN 2015. Web of Science Citations: 6.
CUNHA-SILVA, R. D.; FERNANDES, F. C. R.; SELHORST, C. L. Solar Type II Radio Bursts Recorded by the Compound Astronomical Low-Frequency Low-Cost Instrument for Spectroscopy in Transportable Observatories in Brazil. SOLAR PHYSICS, v. 289, n. 12, p. 4607-4620, DEC 2014. Web of Science Citations: 3.
VENKATESH, K.; FAGUNDES, P. R.; DE JESUS, R.; DE ABREU, A. J.; PILLAT, V. G.; SUMOD, S. G. Assessment of IRI-2012 profile parameters by comparison with the ones inferred using NeQuick2, ionosonde and FORMOSAT-1 data during the high solar activity over Brazilian equatorial and low latitude sector. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 121, n. A, p. 10-23, DEC 2014. Web of Science Citations: 9.
VENKATESH, K.; RAO, P. V. S. RAMA; FAGUNDES, PAULO R. The role of altitudinal variation of scale height in determining the topside electron density profile over equatorial and low latitude sectors. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 121, n. A, p. 72-82, DEC 2014. Web of Science Citations: 1.
DE ABREU, A. J.; FAGUNDES, P. R.; BOLZAN, M. J. A.; GENDE, M.; BRUNINI, C.; DE JESUS, R.; PILLAT, V. G.; ABALDE, J. R.; LIMA, W. L. C. Traveling planetary wave ionospheric disturbances and their role in the generation of equatorial spread-F and GPS phase fluctuations during the last extreme low solar activity and comparison with high solar activity. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 117, p. 7-19, SEP 2014. Web of Science Citations: 9.
SELHORST, C. L.; COSTA, J. E. R.; GIMENEZ DE CASTRO, C. G.; VALIO, A.; PACINI, A. A.; SHIBASAKI, K. THE 17 GHz ACTIVE REGION NUMBER. ASTROPHYSICAL JOURNAL, v. 790, n. 2 AUG 1 2014. Web of Science Citations: 6.
A.G. IZZO DE OLIVEIRA; M. ROCKENBACH; A.A. PACINI. Raios cósmicos e a heliosfera. Revista Brasileira de Ensino de Física, v. 36, n. 2, p. -, Jun. 2014.
VENKATESH, K.; FAGUNDES, P. R.; SEEMALA, GOPI K.; DE JESUS, R.; DE ABREU, A. J.; PILLAT, V. G. On the performance of the IRI-2012 and NeQuick2 models during the increasing phase of the unusual 24th solar cycle in the Brazilian equatorial and low-latitude sectors. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 119, n. 6, p. 5087-5105, JUN 2014. Web of Science Citations: 18.
NOGUEIRA, P. A. B.; ABDU, M. A.; SOUZA, J. R.; BAILEY, G. J.; BATISTA, I. S.; SHUME, E. B.; DENARDINI, C. M. Longitudinal variation in Global Navigation Satellite Systems TEC and topside ion density over South American sector associated with the four-peaked wave structures. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 118, n. 12, p. 7940-7953, DEC 2013. Web of Science Citations: 8.
SELHORST, C. L.; BARBOSA, C. L.; VALIO, ADRIANA. PLANETARY TRANSITS WITH THE ATACAMA LARGE MILLIMETER/SUBMILLIMETER ARRAY RADIO INTERFEROMETER. Astrophysical Journal Letters, v. 777, n. 2 NOV 10 2013. Web of Science Citations: 4.

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