Mangalathayil Ali Abdu

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Physics

Mangalathayil Ali Abdu's Degrees

PhD Physics University of Colorado
Masters Physics University of Kerala
Bachelors Physics University of Kerala

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Mangalathayil Ali Abdu's Published Works

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Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Outstanding problems in the equatorial ionosphere–thermosphere electrodynamics relevant to spread F (2001) (291)
Magnetic declination control of the equatorial F region dynamo electric field development and spread F (1981) (273)
Major phenomena of the equatorial ionosphere-thermosphere system under disturbed conditions (1997) (254)
Fast and ultrafast Kelvin wave modulations of the equatorial evening F region vertical drift and spread F development (2014) (224)
Equatorial F region vertical plasma drifts: Seasonal and longitudinal asymmetries in the American sector (1986) (207)
IONIZATION DRIFT VELOCITIES IN THE EQUATORIAL F REGION (1981) (196)
Equatorial Ionospheric Electric Fields During the November 2004 Magnetic Storm (2007) (196)
Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observational data from the SpreadFEx campaign (2009) (189)
Prompt penetration electric fields (PPEFs) and their ionospheric effects during the great magnetic storm of 30-31 October 2003 (2008) (172)
Equatorial plasma fountain and its effects over three locations: Evidence for an additional layer, the F 3 layer (1997) (165)
Magnetospheric disturbance induced equatorial plasma bubble development and dynamics: A case study in Brazilian sector (2003) (159)
Unusual early morning development of the equatorial anomaly in the Brazilian sector during the Halloween magnetic storm (2006) (139)
Some characteristics of spread F at the magnetic equatorial station Fortaleza (1980) (135)
Aeronomy of the earth's atmosphere and ionosphere (2011) (135)
Ionospheric effects of the March 13, 1989, magnetic storm at low and equatorial latitudes (1991) (130)
Equatorial density depletions observed at 840 km during the great magnetic storm of March 1989 (1991) (128)
Ionospheric plasma bubble climatology over Brazil based on 22 years (1977–1998) of airglow observations (2002) (126)
A new aspect of magnetic declination control of equatorial spread F and F region dynamo (1992) (122)
Equatorial ionospheric electric fields during magnetospheric disturbances: local time/longitude dependences from recent EITS campaigns (1995) (122)
Physical mechanism and statistics of occurrence of an additional layer in the equatorial ionosphere (1998) (122)
Equatorial spread F/plasma bubble irregularities under storm time disturbance electric fields (2012) (116)
Equatorial ionosphere–thermosphere system: Electrodynamics and irregularities (2005) (114)
Simultaneous observation of ionospheric plasma bubbles and mesospheric gravity waves during the SpreadFEx Campaign (2009) (113)
Conjugate Point Equatorial Experiment (COPEX) Campaign in Brazil: Electrodynamics highlights on spread F development conditions and day-to-day variability (2009) (111)
South Atlantic magnetic anomaly ionization: A review and a new focus on electrodynamic effects in the equatorial ionosphere (2005) (105)
Vertical ionization drift velocities and range type spread F in the evening equatorial ionosphere (1983) (101)
Effects of intense storms and substorms on the equatorial ionosphere/thermosphere system in the American sector from ground‐based and satellite data (1997) (90)
Two‐day wave coupling of the low‐latitude atmosphere‐ionosphere system (2006) (90)
Superposed epoch analysis of the dayside ionospheric response to four intense geomagnetic storms (2008) (84)
Spread F plasma bubble vertical rise velocities determined from spaced ionosonde observations (1983) (81)
Equatorial ionospheric vertical plasma drift model over the Brazilian region (1996) (81)
Responses of the low-latitude ionosphere to very intense geomagnetic storms (2001) (81)
Magnetospheric disturbance effects on the Equatorial Ionization Anomaly (EIA) : an overview (1991) (81)
Ionospheric variability at Brazilian low and equatorial latitudes: comparison between observations and IRI model (2004) (77)
Low- and mid-latitude ionospheric electric fields during the January 1984 GISMOS campaign (1990) (75)
On the occurrence of postmidnight equatorial F region irregularities during the June solstice (2011) (73)
Computer simulation of electron and ion densities and temperatures in the equatorial F region and comparison with Hinotori results (1995) (70)
Planetary wave signatures in the equatorial atmosphere ionosphere system, and mesosphere- E- and F-region coupling (2006) (70)
Abnormal evening vertical plasma drift and effects on ESF and EIA over Brazil-South Atlantic sector during the 30 October 2003 superstorm (2008) (68)
Equatorial anomaly effects on GPS scintillations in brazil (2003) (66)
Association between plasma bubble irregularities and airglow disturbances over Brazilian low latitudes (1980) (66)
Equatorial spread-F occurrence statistics in the American longitudes: Diurnal, seasonal and solar cycle variations (1998) (66)
Precursor signatures and evolution of post‐sunset equatorial spread‐F observed over Sanya (2012) (65)
Planetary waves in the equatorial mesosphere and ionosphere (2006) (65)
Observations and model calculations of an additional layer in the topside ionosphere above Fortaleza, Brazil (1997) (62)
Annual variations of the ionosphere: A review based on MU radar observations (2000) (60)
F3 layer during penetration electric field (2008) (59)
A plasma temperature anomaly in the equatorial topside ionosphere (1997) (59)
Ionospheric zonal velocities at conjugate points over Brazil during the COPEX campaign: Experimental observations and theoretical validations (2009) (59)
Equatorial electric field versus neutral wind control of the equatorialanomaly under quiet and disturbed conditions (1990) (58)
Overview and summary of the Spread F Experiment (SpreadFEx) (2009) (57)
Spread F occurrence over a southern anomaly crest location in Brazil during June solstice of solar minimum activity (2011) (57)
Onset conditions of equatorial (range) spread F at Fortaleza, Brazil, during the June solstice (1997) (55)
Multistation digisonde observations of equatorial spread F in South America (2004) (54)
Determination of the quenching rate of the O(¹D) by O(³P) from rocket‐borne optical (630 nm) and electron density data (1993) (53)
Equatorial F-layer heights, evening prereversal electric field, and night E-layer density in the American sector: IRI validation with observations (2004) (53)
The variability of low‐latitude ionospheric amplitude and phase scintillation detected by a triple‐frequency GPS receiver (2017) (53)
Solar cycle related range type spread-F occurrence characteristics over equatorial and low latitude stations in Brazil (1985) (52)
Scintillation‐producing Fresnel‐scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly (2010) (52)
Latitudinal distribution of anomalous ion density as a precursor of a large earthquake (2011) (51)
Variability of an additional layer in the equatorial ionosphere over Fortaleza (2000) (50)
Equatorial plasma bubble seeding by MSTIDs in the ionosphere (2018) (48)
Equatorial spread F statistics and empirical representation for IRI: A regional model for the Brazilian longitude sector (2003) (48)
An overview of IRI-observational data comparison in American (Brazilian) sector low latitude ionosphere (1996) (48)
Magnetic storm associated disturbance dynamo effects in the low and equatorial latitude ionosphere (2013) (48)
Sporadic E-layer phenomena in the Brazilian geomagnetic anomaly: evidence for a regular particle ionization source (1977) (46)
Simulation of the sporadic E layer response to prereversal associated evening vertical electric field enhancement near dip equator (2007) (46)
Magnetic storm associated delayed sporadic E enhancements in the Brazilian Geomagnetic Anomaly (1977) (45)
The impact of gravity waves rising from convection in the lower atmosphere on the generation and nonlinear evolution of equatorial bubble (2009) (45)
Medium-scale equatorial plasma irregularities observed by Coupled Ion-Neutral Dynamics Investigation sensors aboard the Communication Navigation Outage Forecast System in a prolonged solar minimum (2010) (44)
GPS availability and positioning issues when the signal paths are aligned with ionospheric plasma bubbles (2018) (44)
Storm‐Enhanced Development of Postsunset Equatorial Plasma Bubbles Around the Meridian 120°E/60°W on 7–8 September 2017 (2018) (43)
Equatorial plasma bubble eastward velocity characteristics from scanning airglow photometer measurements over cachoeira paulista (1984) (43)
Equatorial spread F statistics in the American longitudes: Some problems relevant to ESF description in the IRI scheme (2000) (43)
DP 2 electric field fluctuations in the dusk‐time dip equatorial ionosphere (1998) (42)
Observations of day-to-day variability in precursor signatures to equatorial F-region plasma depletions (1999) (41)
Solar activity effects on equatorial plasma bubble zonal velocity and its latitude gradient as measured by airglow scanning photometers (1991) (40)
O(1S) and O(1D) quantum yields from rocket measurements of electron densities and 557.7 and 630.0 nm emissions in the nocturnal F-region (1992) (40)
Latitudinal gradient in the plasma bubble zonal velocities as observed by scanning 630-nm airglow measurements (1990) (39)
Equatorial spread F instability conditions as determined from ionograms (1982) (39)
Equatorial f-region oi 6300 å and oi 5577 å emission profiles observed by rocket-borne airglow photometers (1990) (38)
Day-to-day and short-term variabilities in the equatorial plasma bubble/spread F irregularity seeding and development (2019) (38)
Rocket observation of equatorial plasma bubbles over Natal, Brazil, using a high-frequency capacitance probe (1991) (38)
A comparison of ionospheric vertical drift velocities measured by Digisonde and Incoherent Scatter Radar at the magnetic equator (2006) (38)
Magnetic storm associated enhanced particle precipitation in the South Atlantic Anomaly: Evidence from VLF phase measurements (1981) (38)
Assimilative mapping of ionospheric electrodynamics in the thermosphere‐ionosphere general circulation model comparisons with global ionospheric and thermospheric observations during the GEM/SUNDIAL period of March 28–29, 1992 (1996) (37)
Plasma bubble irregularity occurrence and zonal velocities under quiet and disturbed conditions, from polarimeter observations (1984) (37)
Challenges to Equatorial Plasma Bubble and Ionospheric Scintillation Short-Term Forecasting and Future Aspects in East and Southeast Asia (2020) (36)
High electron temperature associated with the prereversal enhancement in the equatorial ionosphere (1997) (36)
Equatorial electrojet irregularities investigations using a back-scatter radar and a digisonde at São Luı́s: some initial results (2002) (35)
Long term trends in sporadic E layers and electric fields over Fortaleza, Brazil (1996) (34)
D, E, and F layers in the daytime at high-latitude terminator ionosphere of Mars: Comparison with Earth's ionosphere using COSMIC data (2009) (34)
Solar and geomagnetic activity effects on nocturnal zonal velocities of ionospheric plasma depletions (1999) (34)
Occurrence of large scale equatorial F-region plasma depletions during geo-magnetic disturbances (1998) (34)
Electrodynamics of ionospheric weather over low latitudes (2016) (34)
Correction to “Ionospheric responses to the October 2003 superstorm: Longitude/local time effects over equatorial low and middle latitudes” (2007) (33)
Total electron content at low latitudes and its comparison with the IRI90 (1994) (32)
Equatorial F region evening vertical drift, and peak height, during southern winter months: A comparison of observational data with the IRI descriptions (2006) (32)
Plasma bubble zonal velocity variations with solar activity in the Brazilian region (2004) (32)
Latitudinal and magnetic flux tube extension of the equatorial spread F irregularities (1983) (32)
Electrodynamics of the vertical coupling processes in the atmosphere-ionosphere system of the low latitude region (2009) (31)
Longitudinal differences in the equatorial spread F characteristics between Vietnam and Brazil (2010) (30)
Ionospheric Scintillation Fading Coefficients for the GPS L1, L2, and L5 Frequencies (2018) (30)
East‐west plasma bubble irregularity motion determined from spaced VHF polarimeters: Implications on velocity shear in the zonal F region bulk plasma motion (1985) (30)
An investigation of ionospheric responses, and disturbance thermospheric winds, during magnetic storms over South American sector (2002) (30)
The role of electric fields in sporadic E layer formation over low latitudes under quiet and magnetic storm conditions (2014) (29)
Theoretical and experimental zonal drift velocities of the ionospheric plasma bubbles over the Brazilian region (2006) (29)
Vertical and zonal equatorial F-region plasma bubble velocities determined from OI 630 nm nightglow imaging (1997) (29)
Gravity wave induced ionization layers in the night F-region over Cachoeira Paulista (22°S, 45°W) (1982) (29)
Ionospheric irregularity behavior during the September 6–10, 2017 magnetic storm over Brazilian equatorial–low latitudes (2019) (29)
The Guará Campaign: A series of rocket‐radar investigations of the Earth's upper atmosphere at the magnetic equator (1997) (29)
Wave disturbances in the low latitude ionosphere and equatorial ionospheric plasma depletions (1981) (29)
Characteristics of the ionospheric F-region plasma irregularities over brazilian longitudinal sector (2007) (28)
Magnetic conjugate point observations of kilometer and hundred‐meter scale irregularities and zonal drifts (2010) (28)
Azimuthal drift and precipitation of electrons into the South Atlantic Geomagnetic Anomaly during an SC magnetic storm (1973) (28)
Equatorial ionization anomaly and thermospheric meridional winds during two major storms over Brazilian low latitudes (2011) (27)
Storm-time total electron content and its response to penetration electric fields over South America (2011) (27)
Thermospheric meridional wind at low latitude from measurements of F layer peak height (1997) (27)
Equatorial ionosphere responses to two magnetic storms of moderate intensity from conjugate point observations in Brazil (2012) (27)
Determination of vertical plasma drift and meridional wind using the Sheffield University Plasmasphere Ionosphere Model and ionospheric data at equatorial and low latitudes in Brazil: Summer solar minimum and maximum conditions (2000) (27)
Equatorial electrojet 3-M irregularity dynamics during magnetic disturbances over Brazil: results from the new VHF radar at São Luı́s (2003) (27)
Radio occultation electron density profiles from the FORMOSAT-3/COSMIC satellites over the Brazilian region: A comparison with Digisonde data (2012) (26)
A statistical study of the response of the dayside equatorial F2 layer to the main phase of intense geomagnetic storms as an indicator of penetration electric field (2011) (26)
Spread-F at anomaly crest regions in the Indian and American longitudes (2003) (25)
Attenuation of galactic radio noise at 25 Mhz and 21.3 Mhz in the ionosphere over Ahmedabad during 1957–1964 (1967) (25)
Solar flux effects on the equatorial evening vertical drift and meridional winds over Brazil: A comparison between observational data and the IRI model and the HWM representations (2010) (24)
Parameterized Regional Ionospheric Model and a comparison of its results with experimental data and IRI representations (2010) (24)
VHF radar studies of the equatorial electrojet 3-m irregularities over São Luís: day-to-day variabilities under auroral activity and quiet conditions (2004) (24)
Comparison between IRI predictions and digisonde measurements at low latitude station (1996) (24)
Unusual ionospheric absorption characterizing energetic electron precipitation into the South Atlantic Magnetic Anomaly (2002) (24)
Equatorial spread F development and quiet time variability under solar minimum conditions (2012) (23)
Midnight reversal of ionospheric plasma bubble eastward velocity to westward velocity during geomagnetically quiettime: Climatology and its model validation (2011) (23)
Nighttime thermospheric meridional winds at Cachoeira Paulista (23°S, 45°W): Evidence for effects of the equatorial midnight pressure bulge (1997) (23)
Rocket and ground-based electron density soundings versus IRI representation (2003) (21)
Possible influence of ultra-fast Kelvin wave on the equatorial ionosphere evening uplifting (2009) (21)
Strong longitudinal difference in ionospheric responses over Fortaleza (Brazil) and Jicamarca (Peru) during the January 2005 magnetic storm, dominated by northward IMF (2012) (20)
Characteristics of the ionospheric irregularities over Brazilian longitudinal sector (2006) (20)
Processes in the quiet and disturbedequatorial-low latitude ionosphere: Sundial campaign 1984 (1987) (19)
Global scale equatorial ionization anomaly (EIA) response to magnetosphericdisturbances on the May-June 1987 SUNDIAL coordinated observations (1993) (18)
Analysis of Plasma Bubble Signatures in Total Electron Content Maps of the Low-Latitude Ionosphere: A Simplified Methodology (2020) (18)
A model of equatorial and low latitude VHF scintillation in India (2006) (17)
Equatorial plasma bubble zonal velocity height gradient from spaced VHF polarimeter and scanning 630 nm measurements (1987) (17)
In-situ measurement of ionospheric plasma density by two different techniques—a comparison (1991) (16)
Post-sunset wintertime 630.0 nm airglow perturbations associated with gravity waves at low latitudes in the South American sector (1997) (16)
Ionospheric F3 layer: Implications for the IRI model (2003) (16)
Equatorial ionospheric irregularities produced by the Brazilian Ionospheric Modification Experiment (BIME) (1989) (16)
Daytime efficiency and characteristic time scale of interplanetary electric fields penetration to equatorial latitude ionosphere (2011) (15)
Climatology of intermediate descending layers (or 150 km echoes) over the equatorial and low-latitude regions of Brazil during the deep solar minimum of 2009 (2019) (14)
Zonal/meridional wind and disturbance dynamo electric field control of the low‐latitude ionosphere based on the SUNDIAL/ATLAS 1 Campaign (1996) (14)
A Comparative Study of VHF Scintillation and Spread F Events (1983) (14)
Longitudinal variation of the equatorial ionosphere: Modeling and experimental results (2013) (14)
D-region recombination coefficients and the short wavelength X-ray flux during a solar flare (1973) (14)
On the pre-midnight ascent of F-layer in the June solstice during the deep solar minimum in 2008 over the Indian sector (2014) (14)
Rocket-borne measurements of equatorial ionospheric electron densities and their comparison with IRI-10 predictions (1990) (14)
The spread F Experiment (SpreadFEx): Program overview and first results (2009) (14)
Electrodynamic coupling processes between the magnetosphere and the equatorial ionosphere during a 5-day HILDCAA event (2011) (13)
The prereversal enhancement in the vertical drift for Fortaleza and the sporadic E layer (2005) (13)
Energetic particle precipitation in the Brazilian geomagnetic anomaly during the “Bastille Day storm” of July 2000 (2006) (13)
Power spectral studies of VHF ionospheric scintillations near the crest of the equatorial anomaly in India (2006) (13)
Correlation analysis between the occurrence of ionospheric scintillation at the magnetic equator and at the southern peak of the Equatorial Ionization Anomaly (2014) (13)
Comparison of low latitude F region peak densities, heights and equatorial E×B drift from IRI with observational data and the Sheffield University plasmasphere ionosphere model (2003) (12)
Equatorial spread F: Statistical comparison between ionosonde and scintillation observations and longitude dependence (2003) (11)
Latitudinal dependence of cosmic noise absorption in the ionosphere over the SAMA region during the September 2008 magnetic storm (2012) (11)
The Acoustic Gravity Wave Induced Disturbances in the Equatorial Ionosphere (2011) (11)
Amplitude enhancement of SC(H) events in the South Atlantic anomaly region (2005) (11)
On the rocket-induced wave disturbances in the daytime equatorial ionosphere (1988) (11)
Correlation between the cosmic noise absorption calculated from the SARINET data and the energetic particles measured by MEPED: Simultaneous observations over SAMA region (2012) (10)
Electron density and electric field fluctuations associated with developing plasma bubbles (2003) (10)
Unusual Generation of Localized EPB in the Dawn Sector Triggered by a Moderate Geomagnetic Storm (2018) (10)
Low latitude Ne and Te variations at 600 km during 1 March 1982 storm from HINOTORI satellite (2005) (9)
Global dayside ionospheric uplift and enhancements due to interplanetary shock electric fields (2017) (9)
Coupling and energetics of the equatorial ionosphere-thermosphere system: advances during the STEP period (1999) (9)
A comparison of two different techniques for deriving the quiet day curve from SARINET riometer data (2012) (9)
Atypical nighttime spread-F structure observed near the southern crest of the ionospheric equatorial ionization anomaly (2012) (9)
Early morning enhancement in ionospheric electron density during intense magnetic storms (2012) (9)
Equatorial ionization anomaly development as studied by GPS TEC and foF2 over Brazil: A comparison of observations with model results from SUPIM and IRI-2012 (2013) (9)
Rocket measurements of ionospheric electron density from Brazil in the last two decades (2006) (9)
Occurrence of an additional layer in the ionosphere over Fortaleza (1999) (9)
Model comparisons of equatorial plasma fountain and equatorial anomaly at three locations (1996) (9)
Some Differences in the Dynamics of the Intermediate Descending Layers Observed During Periods of Maximum and Minimum Solar Flux (2020) (9)
Ionospheric Electron Content over Brazilian low latitude and its comparison with the IRI and SUPIM models (1996) (8)
Thermospheric F-region travelling disturbances detected at low latitude by an OI 630 nm digital imager system (2001) (8)
Equatorial F-region irregularity latitudinal extension and dynamo electric field (1985) (8)
Particle ionization rates from total solar eclipse rocket ion composition results in the South Atlantic Geomagnetic Anomaly (1979) (8)
Modulation of equatorial electrojet plasma waves by overshielding electric field during geomagnetic storms (2011) (8)
Multi‐instrument study of longitudinal wave structures for plasma bubble seeding in the equatorial ionosphere (2021) (7)
Book reviewLow latitude ionospheric physics: COSPAR Colloquium Series Volume 7, ed. by Fu-Song Kuo, 1994, 329 pp. Pergamon Press, £120 hb, ISBN no. 0-08-042134-2 (1995) (7)
Dust storm and electron density in the equatorial D region ionosphere of Mars: Comparison with Earth's ionosphere from rocket measurements in Brazil (2015) (7)
An empirical model for the ionospheric electron content at low latitude in Brazil and a comparison with IRI95 (2003) (7)
The role played by ozone in the lower D region electron density variations in winter (1974) (7)
Flare X‐ray photochemistry of the E region ionosphere of Mars (2016) (7)
The International Equatorial Electrojet Year (1992) (7)
Numerical simulation of nighttime electron precipitation in the lower ionosphere over a sub-auroral region (2006) (7)
Ionospheric modelling at low latitudes over Brazil during summer solar minimum (2000) (6)
Cosmic ray ionization in the D region at sunrise: evidence from vlf phase measurements (1973) (6)
F 3 layer observations at low and equatorial latitudes in Brazil (2012) (6)
Further complexities on the pre-reversal vertical drift modeling over the Brazilian region: A comparison between long-term observations and model results (2020) (6)
Permanent changes in sporadic E layers over Fortaleza, Brazil (1997) (6)
Detection of three distinct regions in the equatorial electrojet in the Brazilian sector (2003) (6)
Equatorial electrojet plasma irregularities observed during late afternoon by the 30 MHz coherent scatter radar in São Luís, Brazil (2011) (6)
Horizontal gradients of the nocturnal OI 557.7 nm and OI 630 nm photoemission rates in the equatorial ionosphere based on rocket electron density data (1997) (6)
The formation of an additional layer in the equatorial topside ionosphere (1997) (5)
Conjugate Sporadic-E measurements (2009) (5)
Gravity wave induced ionization layers in the night F-region at low latitudes (1980) (5)
Modelling and measurement of global-scale ionospheric behavior under solar minimum, equinoctial conditions (1992) (5)
Zonal wave structures in the nighttime tropospheric density and temperature and in the D region ionosphere over Mars: Modeling and observations (2009) (5)
On the possible relationship between substorm electron drift and cosmic noise absorption on the morning side of the auroral zone (1971) (4)
Numerical simulation of equatorial plasma bubbles over Cachimbo: COPEX campaign (2014) (4)
Erratum to “A comparison of ionospheric vertical drift velocities measured by digisonde and incoherent scatter radar at the magnetic equator”: [Journal of Atmospheric and Solar-Terrestrial Physics 68 (2006) 669–678] (2006) (4)
Some trends in the red-shift distribution of quasi-stellar objects and related peculiar galaxies (1972) (4)
Equatorial Spread F Variability Investigations in Brazil: Preliminary Results from Conjugate Point Equatorial Experiments Campaign - COPEX (2004) (4)
Geophysicae VHF radar observations of the dip equatorial Eregion during sunset in the Brazilian sector (2006) (4)
F Region Electric Field Effects on the Intermediate Layer Dynamics During the Evening Prereversal Enhancement at Equatorial Region Over Brazil (2021) (4)
Equatorialionosphere sunset electrodynamics in the American sector from SUNDIAL December 1988campaign results (1993) (4)
Comparison of ionospheric electron temperature rocket measurements over Natal, Brazil, with the IRI model (1988) (4)
Ionospheric response to 2-day planetary wave in the equatorial and low latitude regions (2012) (4)
Latitude-dependent delay in the responses of the equatorial electrojet and S q currents to X-class solar flares (2018) (4)
Unusual behavior of quiet-time zonal and vertical plasma drift velocities over Jicamarca during the recent extended solar minimum of 2008 (2017) (4)
Gravity waves in low latitude F-region (1975) (3)
On the deviations of measured electron density profiles from IRI predictions for low latitudes (2001) (3)
Spread F modeling over Brazil (2017) (3)
Space weather in the thermospheric–ionospheric domain over the Brazilian region: Climatology of ionospheric plasma bubbles in the subequatorial and low-latitude region (2011) (3)
The Scintillation Prediction Observations Research Task (SPORT): A Spacecraft Development for an International Mission (2018) (3)
Postmidnight equatorial plasma irregularities on the June solstice during low solar activity – a case study (2019) (3)
Role of Bottom‐Side Density Gradient in the Development of Equatorial Plasma Bubble/Spread F Irregularities: Solar Minimum and Maximum Conditions (2020) (3)
What is happening near Sq focus (2000) (3)
Nitric oxide height distribution in the lower ionosphere from rocket ion composition results over a southern temperate latitude station (1979) (3)
A Numerical Study on the 3‐D Approach of the Equatorial Plasma Bubble Seeded by the Prereversal Vertical Drift (2019) (3)
Deduction of electron temperature from F‐region component of absorption of cosmic radio noise (1967) (3)
Modeling the Low-Latitude Ionosphere and Scintillation Occurrence during the COPEX Campaign (2006) (3)
Comparisons of IRI model and electron density data for the sub-equatorial station, Natal (2003) (3)
Plasma diagnostic experiments on board of the Brazilian scientific microsatellite SACI-1 (2012) (3)
Climatology of intermediate descending layers (150 km) over the equatorial and low latitude regions of Brazil during the deep solar minimum of 2009 (2019) (3)
Electron temperatures in the ionospheric F-region over Ahmedabad (1968) (2)
Evaluation of the dusk and early nighttime Total Electron Content modeling over the eastern Brazilian region during a solar maximum period (2021) (2)
Experimental observations of medium and small scale electrostatic waves associated with ionospheric electron density fluctuations (2004) (2)
Rocket based ionospheric measurements at Thumba with high frequency capacitance probe (1970) (2)
Correction to "Rocket Observation of Equatorial Plasma Bubbles Over Natal, Brazil, Using a High-Frequency Capacitance Probe" (1991) (2)
Responses of intermediate layers to geomagnetic activity during the 2009 deep solar minimum over the Brazilian low-latitude sector (2022) (2)
Measurements of Ionospheric Absorption Using Radio Reflections from Meteors (1974) (2)
Correction [to “Equatorial ionospheric vertical plasma drift model over the Brazilian region” by I. S. Batista et al.] (1996) (2)
Longitudinzil Differences in the Spread F Characteristics (1983) (2)
Solar and magnetic declination control on the electrojet and distributed currents in the ionosphere over Jicamarca (1987) (1)
Ionospheric Scintillation Effects On Dg Positioning (1999) (1)
Interplanetary ionospheric coupling: the 6 November 2001 magnetic storm event (2003) (1)
Comparative study ofionogram F2 peak height from different techniques (1991) (1)
Studies of Radio-Wave Absorption Features at a Subauroral Latitude (1971) (1)
Correction to “Simulation of the sporadic E layer response to prereversal associated evening vertical electric field enhancement near dip equator” (2007) (1)
On the apparent equatorward propagation of auroral substorm absorption events at low auroral latitudes (1978) (1)
Space science education and training in Brazil (1997) (1)
Observations of gravity waves in the airglow during the night of 21 August 2017 solar total eclipse over Brazil (2018) (1)
A commercial radio receiver for lower ionosphere monitoring: Initial results (2004) (1)
Galactic radionoise attenuation in the ionosphere (1966) (1)
Equatorial Spread-F And Plasma Bubbles: A Step Towards Prediction (1999) (1)
A plasma diagnostics package for low-latitude observations on board the French-Brazilian microsatellite (2004) (1)
Contribution of the cascading process O(1S)→O(1D) to the production of the atomic oxygen O(1D) and OI 630 nm airglow in the nocturnal thermosphere (1994) (1)
Long-lasting stagnant equatorial plasma bubble event and the related scintillation over the Brazilian region (2021) (1)
Ionosphere-atmosphere coupling via stratospheric ozone (1992) (1)
GPS scintillations, TEC and zonal plasma drifts observed during the COPEX 2002 campaign: Preliminary results (2005) (1)
Estimation of the initial amplitude of perturbation and its use in numerical simulation of plasma bubbles (2012) (1)
Global scale Earth's upper atmosphere monitoring by SACI-1 micro-satellite (2000) (1)
The Scintillation Prediction Observations Research Task (SPORT) (2017) (1)
Comment on “Modeling the ion chemistry of the D region: A case study based upon the 1966 total solar eclipse” by Sears et al. (1982) (0)
travelling ionospheric disturbances detected by riometers in the sub-polar and the south atlantic magnetic anomaly regions (2004) (0)
F region electric field effects on the intermediate layer dynamics during the evening prereversal enhancement at the equatorial region over Brazil (2020) (0)
Observations of plasma bubbles and their zonal drift using polarimeters (1984) (0)
Forecasting equatorial spread-F using a global assimilative ionospheric model (2003) (0)
A statistical study of plasma bubble zonal drift velocity variations with geomagnetic activity and events of corotating and transient solar wind streams (2005) (0)
DETERMINATION OF NITRIC OXIDE HEIGHT DISTRIBUTION FROM ROCKET ION COMPOSITION RESULTS AT LOW LATITUDES (1980) (0)
Ionospheric and Thermospheric Studies (1992) (0)
Responses of the Equatorial Ionosphere to High Intensity Long Duration Continuous Auroral Activity (2004) (0)
A Simulation of Equatorial Plasma Bubble Signatures on the 016300 Å nightglow Meridional Profile Over Brazilian Low Latitude (1981) (0)
In Situ Observation Of Electrostatic Waves Associated With Ionospheric Plasma Irregularities (2001) (0)
Similar wave-like velocity modulations within the irregular bottom-type F layer and irregular E layer prior to the F region plume (2011) (0)
Solar and Magnetic Declination Control of the Pre-Reversal Enhancement in the Equatorial E- and F-Region Electric Fields (1991) (0)
Ultra Fast Kelvin waves in the equatorial upper atmosphere (2007) (0)
Electric Field. and Electron Density IrregularitiesAssociated with Plasma Bubbles (1997) (0)
Mesosphere-Ionosphere coupling processes observed by ionosonde and airglow photometer in the equatorial region (2005) (0)
Equatorial aeronomy; International Symposium, 8th, San Miguel de Tucuman, Argentina, Mar. 21-27, 1990, Selected Papers (1991) (0)
Effects Of Long-Lasting Interplanetary Magnetic Field Perturbations On The Equatorial Ionosphere (2009) (0)
Multi-Probe Observations of Equatorial F Region Plassma Irregularities (2014) (0)
Particle ionization in the lower ionosphere over the South Atlantic geomagnetic anomaly, from rocket results during the total eclipse of November 1966 (1978) (0)
Ionospheric Scintillations At Equatorial And Low Latitudes In India (2001) (0)
The Effect of Antenna Aperture on the Reception of Cosmic Radio Noise at the Ground (1967) (0)
Magnetospheric Disturbance Effects On Equatorial Spread F And Thermospheric Winds (2001) (0)
Postsunset F-Region Airglow Disturbances Associated with Gravity Waves (1995) (0)
COSMIC NOISE AND IONOSPHERIC ABSORPTION OBSERVATIONS IN ANTARCTICA (1989) (0)
The Guara Campaign: Rocket-Radar Investigations of the Earth's Upper Atmosphere at the Magnetic and Geographic Equators (1999) (0)
PRE-REVERSAL ENHANCEMENT IN THE EQUATORIAL E AND F REGION ELECTRON DRIFT, VELOCITIES AND ITS SEASONAL VARIATION - AN EXPLANATION (1989) (0)
Analysis of Ionospheric Zonal Irregularity Velocity Under Low Latitude During Solar Maxima 24 (2018) (0)
Ionospheric Plasma Bubbles Over South America: Scientific Studies And Evidences Of Their Interference In Telecommunications (2001) (0)
Equatorial Plasma Bubble Development and Dynamics, and Sporadic E Layer Structuring, under Storm Time Electric Fields. (2016) (0)
Study on zonal drift velocities of the ionospheric plasma bubbles using a single GPS scintillation monitor (2018) (0)
The Earth's ionospheric response to the complex interplanetary event of November 5-6, 2001 (2003) (0)
Comments on a paper by R N Singh, `The effective collision frequency in the lower F region of the ionosphere' (1966) (0)
Ionospheric and thermospheric studies. Proceedings. Topical Meetings of the COSPAR Interdisciplinary Scientific Commission P (Meeting P2) and C (Meetings C4 and C8) of the COSPAR 28. Plenary Meeting, The Hague (Netherlands), 25 Jun - 6 Jul 1990. (1992) (0)
STATISTICAL STUDY OF CONSTRAINING PARAMETERS SPACE IN LEAST SQUARE METHOD APPLIED TO GAUSSIANS FIT TO POWER SPECTRA OF SIMULATED RADAR ECHOES OF ELECTROJET PLASMA IRREGULARITIES* INTRODUCTION (2003) (0)
Equatorial spread F echo and irregularity growth processes from conjugate point digital ionograms (2011) (0)
Comparison of different calculation techniques of vertical velocity component of F-layer drifts (2003) (0)
Nighttime F-region plasma structures observed by rocket-borne Langmuir and high frecuency capacitance probes from Natal, Brazil (2012) (0)
Behavior of the total electron content in the ionosphere in Sao Jose dos Campos during magnetic storms in 1980 (1983) (0)
Magnetic Activity And Equatorial Anomaly Effects Over Gps Scintillations (2001) (0)
Nighttime enhancement in the TEC, and magnetic storm response, of the tropical F-region over Brazil (1984) (0)
Seasonal and disturbance variability of the East-West EEJ back-scatter power asymmetry in the Brazilian sector near solar maximum. (2004) (0)
Scintillation zonal drifts inferred at equatorial and low-latitude magnetic conjugate regions (2006) (0)
GEOMAGNETIC STORM EFFECTS ON THE SIGNATURES OF EQUATORIAL ELECTROJET PLASMA IRREGULARITIES (2003) (0)
On the Low Latitude Scanning Photometer Signatures of Equatorial Ionosphere Plasma Bubbles (2018) (0)
Atmospheric gravity waves observed in the nightglow following the 21 August 2017 total solar eclipse} (2020) (0)
East-west plasma bubble irregularity motion determined from spaced VHF polarimeters: Velocity shear in the zonal F-region bulk plasma motion (1983) (0)
East-West asymmetry in the back-scatter power signal from 3m-irregularities of the EEJ in the Brazilian sector. (2002) (0)
Study of the South America lower ionosphere using the SARINET Network (2008) (0)
Observed Auroral Electric Field Modulation In The Equatorial Electrojet (2001) (0)
A numerical study on the Equatorial Plasma Bubble seeded by the pre-reversal vertical drift: A three-dimensional perspective (2018) (0)
EQUATORIAL PLASMA BUBBLE DEVELOPMENT AND DYNAMICS, AND SPORADIC E LAYER STRUCTURING, UNDER DISTURBANCE ELECTRIC FIELDS (2017) (0)
Rocket borne instrumentation for the measurement of electron density—height profile in the ionosphere (1970) (0)
Effects of Planetary Waves and Thermospheric winds on Equatorial Spread F/Plasma Bubble Irregularities (2006) (0)
Interplanetary Alfvén Waves, HILDCAAs, Acceleration of Magnetospheric Relativistic “Killer” Electrons and Auroral Zone Heating (2015) (0)
Plasma diagnostic experiments on board the brazilian micro satellites for the global observation of the low latitude plasma density and temperature (2004) (0)
Global Measurement Of Low Latitude Plasma Parameters On Board The French-Brazilian Microsatellite (2001) (0)
Storm- Induced Equatorial Plasma Depletion in the Brazilian Southeastern Region: A Case Study (1997) (0)
Sudden Stratospheric Warming Effects over L1 Scintillation at Low Latitude During Quiet and Magnetically Disturbed Periods (2014) (0)
Equatorial Spread-F Irregularities As Observed By Three Different Rocket-Borne Plasma Density Probes (1999) (0)
Climatology of ionospheric plasma bubbles over the Brazilian equatorial region: Observations and theoretical analysis (2010) (0)
Evidences of Prompt Penetration and Disturbance Dynamo Electric Field Responses on the Equatorial and Low-latitude Brazilian Ionosphere during Events of High-Intensity Long-Duration Auroral Electrojet Activity (HILDCAA) events (2008) (0)
Low-Latitude Electron Density Data Versus The International Reference Ionosphere Model (2001) (0)
The variation of range type spread F occurrence with a solar cycle at Fortaleza and Cachoeira Paulista (1984) (0)
Ionospheric effects observed during the BIME (Brazilian Ionospheric Modification Experiments) campaign over Fernando de Noronha and Fortaleza (1983) (0)
Variation Of The Zonal Plasma Bubble Drift Velocities With Solar Cycle At Low Latitude (2001) (0)
Acoustic Gravity Waves of Troposphere/Seismic origin that may trigger the collisional interchange instability in the Ionosphere (2010) (0)
Measurements of the plasma vertical and zonal drift velocities: comparison of the results from Digisondes and Incoherent Scatter Radar during the COPEX campaign (2011) (0)
Seasonal study of E-region electric fields at the dip equator estimated from 50 MHz radar observations (2006) (0)
VLF INTERMEDIATE DISTANCE PROPAGATION (1989) (0)
Deviations from model predictions in measured electron density profiles for low latitudes: A critique (2004) (0)
Shear in the zonal drifts of 3 m irregularities inside spreadFplumes observed over Sanya: LOW-LATITUDE PLASMA ZONAL DRIFT SHEAR (2015) (0)
A simulation of equatorial plasma bubble signatures on the OI 6300 A nightglow meridional profile over Brazilian low latitude, revised (1981) (0)
Parameterized Regional Ionospheric Model: a new version (2011) (0)
Multi-scale analysis of the cosmic noise absorption by the geomagnetic activity and galactic cosmic ray precipitation (2006) (0)
Longitudinal differences in the spread F characteristics in the American zone and implications on the F-region dynamo (1980) (0)
Intense wavelike O I 6300 A nightglow disturbances at 22 degrees 42' south, Brazilian zone, as detected by scanning photometric measurements (1978) (0)
Zonal plasma bubble drift velocities dependence on geomagnetic activity at low latitude in Brazil (2003) (0)
Equatorial Spread F Development/Disruption under Disturbance Electric Fields during Some Recent Intense Magnetic Storms. (2006) (0)
Thermospheric Neutral Wind Role on the Equatorial and Low-latitude Ionosphere During Conjugate Point Experiment Campaign (2015) (0)
Simultaneous observation of ionospheric plasma bubble and mesospheric gravity wave activities during CAWSES 2005 SpreadFEx Campaign (2007) (0)
Ionospheric Variability over the Brazilian Equatorial Region during the Minima Solar Cycles 1996 and 2009: Comparison between Observational Data and the IRI Model (2022) (0)
An investigation of ionospheric irregularity effects on SIR-B image processing and information extraction (1984) (0)
Solar flux effects on the equatorial evening vertical drift and meridional winds over Brazil: A comparison between observational data and available IRI representations (2008) (0)
Long Term Trends In F3 Layer Over Fortaleza, Brazil (2001) (0)
ON THE INFLUENCE OF ATMOSPHERIC OZONE ON THE INITIAL IONIZATION OF THE IONOSPHERIC D-LAYER (1989) (0)
The Lowering of the EEJ Backscattering Region Based on Coherent Radar Soundings in the Brazilian Sector (2007) (0)
Precursor wave structure, prereversal vertical drift, and their relative roles in the development of post sunset equatorial spread-F (2016) (0)
Application of GPS Measurements for Ionospheric and Tropospheric Modelling (2002) (0)
LONG TERM CHANGES IN THE SPORADIC E-LAYER PHENOMENA OVER FORTALEZA, BRAZIL (2018) (0)
In Situ Measurement of High Altitude Spread-F Characteristics by Three Different Plasma Density Probes (1997) (0)
A NEW 50 MHz COHERENT BACKSCATTER RADAR AT MAGNETIC EQUATOR IN BRAZIL (2004) (0)
Effects Of Long-Lasting Interplanetary Magnetic Field Perturbations On The Equatorial Ionosphere (2009) (0)
Equatorial Upper Atmosphere Research Satellite: Equars (2001) (0)
Longitudinal differences in the characteristics of spread F occurrence rates along the longitude of the American continent and its implications for the dynamic mechanism of the F region (1982) (0)
Determination of the Quenching Ite of the O(D) by O(P) From Rocket-Borne OpticM (630 nra) Electron Density (1993) (0)
Spectral features of F-region plasma irregularities as observed by rocket- borne electron density probes from Brazil (2005) (0)
Studies of the EEJ Intensity Correlated with the Fluctuations in AE Activity (Transients in 3-meter Irregularity Power and Local Time Dependence) Using the RESCO 50 MHz VHF Coherent Radar and Magnetometers Data (2003) (0)
Atomic Oxygem Quantum Yields from Rocket Experiment -in Brazil (1991) (0)
New approach for calculating a QDC using detectability of radar signals applied to riometer data (2010) (0)
Equatorial plasma bubble seeding process related to MSTID (2017) (0)
Numerical simulation of Rayleigh-Taylor instability in the equatorial ionospheric plasma (1981) (0)
Effects of the magnetic activity on F region zonal and vertical plasma drifts over Jicamarca during solar minimum (2016) (0)
LONGITUDINAL AND DAY-TO-DAY VARIATIONS OF EQUATORIAL SPREAD F OCCURRENCE FROM OBSERVATIONS OVER SOUTH AMERICA (2017) (0)
Solar Flare and Radio Burst Effects on GNSS Signals and the Ionosphere During September 2017 (2022) (0)
Temporal and Spatial Characterization of GPS Fading From Ionospheric Irregularities Under Low latitude (2017) (0)
Effects of High-Intensity Long-Duration Continuous AE Activity in the Equatorial Ionosphere Dynamics (2005) (0)
F-region nocturnal zonal plasma drift velocities of the brazilian equatorial ionosphere during maximum solar (2005) (0)

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