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Giorgio Picanço (Space Science Laboratory, University of Massachusetts Lowell, USA)05/10/2026, 09:45
The ionosphere is a highly dynamic region of the upper atmosphere where variations in plasma density are driven by a variety of processes, particularly solar radiation, geomagnetic activity, atmospheric waves, and electrodynamic mechanisms. These variations can significantly affect the propagation of radio signals and the performance of technologies that rely on them, making ionospheric...
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05/10/2026, 10:15
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Rodolfo de Jesus (Instituto Nacional de Pesquisas Espaciais)05/10/2026, 11:00
R. de Jesus[1,2,3], G. Yang[1], A.A. Pimenta[3], A.J. de Abreu[3,4], G.A.S. Picanço[5], A.M. Santos[2,3], L.C.A. Resende[2,3], C.S. Carmo[1,2,3], L.F.R. Vital[1,2,3], I.S. Batista[3], J.R. Souza[3], K. Venkatesh[6], P.R. Fagundes[7], V.F. Andrioli[2,3], P.P. Batista[3], M.P.P. Martins[3], C. Wang[1], H. Li[1], Z. Liu[1], R.B. Kerr[8], L.V. Peres[9], R. da Silva[9]
[1]State Key Laboratory of...
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15. identificação da superfície crítica de Alfvén e efeitos das componentes de conversão de energiasCaroline Botelho (Instituto Nacional de Pesquisas Espaciais)05/10/2026, 11:15
O Sol, estrela responsável pela principal fonte de energia do planeta Terra, impõe diversos processos físicos que afetam o clima espacial e se estendem para além da órbita terrestre. Devido à grande exposição e influência dos fenômenos advindos da estrela aos instrumentos espaciais, surge a necessidade de um entendimento mais robusto desse corpo celeste. Com esse intuito, foi realizado o...
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ALIU KARIM (NATIONAL INSTITUTE FOR SPACE RESEARCH (INPE))05/10/2026, 11:30
Interplanetary shocks are fundamental agents of energy dissipation, particle
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acceleration, and geomagnetic disturbance in the heliosphere, yet their complex
structure and geoeffective impacts are not fully understood. This study presents
a comprehensive investigation of interplanetary shock events using multi-spacecraft
observations from ACE, STEREO, Parker Solar Probe, and Solar Orbiter.... -
Bruno Fernandes Garcia05/10/2026, 11:45
A distribuição de medida de emissão diferencial (DEM) descreve quanto plasma coronal existe em cada temperatura ao longo da linha de visada e é a base de mapas de medida de emissão (EM), temperatura média e largura térmica em regiões ativas. Com as seis bandas EUV do SDO/AIA (94, 131, 171, 193, 211 e 335 Å), obter a DEM é um problema inverso mal posto, cujo resultado depende da resposta em...
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Joaquim Costa (INPE - National Institute for Space Research)05/10/2026, 14:00
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Guillermo Caro (Instituto Nacional de Pesquisas Espaciais)05/10/2026, 14:30
Secular variations in the geomagnetic field gradually alter the magnetic configuration that controls the ionospheric current systems responsible for the diurnal variation. However, this coupling has not yet been systematically quantified in the South American Magnetic Anomaly (SAMA) region. Therefore, the objective of this study is to investigate the long-term effects on the diurnal variation...
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Jorge Camasmie (Universidade de São Paulo)05/10/2026, 14:45
Tempestades magnéticas são perturbações do campo magnético terrestre causadas pela interação do vento solar com a magnetosfera. As rápidas variações geomagnéticas associadas a esses eventos induzem campos elétricos na superfície terrestre, podendo gerar Correntes Geomagneticamente Induzidas (GICs) que afetam redes elétricas e sistemas de comunicação. Embora mais intensas em altas latitudes, as...
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Solomon Atotuomah (INPE)05/10/2026, 15:00
The South American Magnetic Anomaly (SAMA) evolves in terms of the location of Earth’s magnetic field's weakest point, its span, and its intensity while remaining the region of weakest magnetic-field intensity. This makes the region particularly suitable for examining the coupling between magnetospheric forcing and the lower ionosphere. Previous observations show that cosmic noise absorption...
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Pedro Henrique Ferreira Fister05/10/2026, 15:15
The variation of electron flux in the energy range from 0.015 to 51.768 keV is analyzed in association with the occurrence of plasmaspheric plumes under different solar wind conditions. During the formation of these structures, regions of enhanced plasma density extend to higher L-shell values, allowing the propagation of whistler-plume waves. The observed flux variations may be associated...
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Karen Julia Coldebella Ferreira (National Institute for Space Research (INPE) / NASA Goddard Space Flight Center)05/10/2026, 15:45
Energetic particle precipitation is common in the South Atlantic Magnetic Anomaly (SAMA), where the weakened geomagnetic field allows particles from the inner radiation belt to reach the atmosphere. During geomagnetic disturbances, this precipitation can be enhanced and may produce ionospheric signatures typically observed in auroral regions. However, the mechanisms controlling the storm-time...
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Emilly Rosa05/10/2026, 16:00
O intenso campo magnético de Júpiter, aliado à sua rápida rotação, impõe ao ambiente ao redor do planeta um regime de corrotação de plasma que se estende de modo a alcançar os satélites Galileanos com velocidades relativas sub-Alfvénicas. Nessa configuração, cada satélite responde de forma distinta à passagem do plasma magnetosférico de Júpiter, e é justamente dessa resposta que se originam...
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Laysa Resende (INPE)06/10/2026, 09:00
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Anita Jungton Valcorte06/10/2026, 09:30
Ionospheric disturbance indices have been developed to quantify ionospheric variability and identify perturbations associated with space weather phenomena, given that the ionosphere is a highly dynamic region of the Earth's upper atmosphere that is strongly influenced by solar and geomagnetic activity. Variations in ionospheric electron density can significantly affect radio wave propagation...
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ÂNGELA VALENTIM (INPE)06/10/2026, 09:45
The equatorial ionosphere undergoes a profound electrodynamic reconfiguration during the sunset period. The rapid decay of E-region conductivity modifies the electrodynamic coupling and current closure between the E and F regions. In combination with the F-region dynamo driven by thermospheric winds, this process gives rise to the Pre-Reversal Enhancement of the zonal electric field (PRE). The...
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Jaziel Campelo (Instituto Nacional de Pesquisas Espaciais)06/10/2026, 10:00
Sporadic E (Es) layers are electron density structures typically found between 90 and 130 km altitude. They are composed predominantly of metallic ions and commonly form through wind shear at these heights. This study investigates the dynamical and morphological properties of Es layers exhibiting spread echoes over Santa Maria (RS), a station located within the South American Magnetic Anomaly...
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Oluwasola Akinbode (INPE)06/10/2026, 10:15
The Brazilian ionospheric sector is particularly complex due to the influence of the Equatorial Ionization Anomaly (EIA) and the South American Magnetic Anomaly (SAMA). Also, the large declination angle of the magnetic field and phenomena like disturbed electric fields and plasma irregularities can produce significant spatial and temporal variations in radio communications. Thus, the Maximum...
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Kleber Pinheiro Naccarato (INPE)06/10/2026, 10:45
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João Carlos Martins Alves (Instituto Nacional de Pesquisas Espaciais)06/10/2026, 11:15
In the context of lightning physics, upward lightning represents a rare and distinct class of electrical discharges that originate from ground-based elevated structures and propagate toward storm clouds. In this study, a Phantom v310 high-speed camera located in Johannesburg, South Africa, served as the primary instrumentation to capture the detailed development of upward positive leaders....
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Diego Rhamon06/10/2026, 11:30
Neste trabalho, será abordada a previsão imediata de tempo (nowcasting), o significado de tempo severo e a coleta de relatos de tempo severo no Brasil. Também será abordado como os dados de descargas atmosféricas (especificamente, os raios) podem ser utilizados na previsão imediata e na caracterização de ocorrência de tempo severo. Ainda, será abordado um panorama do estudo de raios...
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Hentony Barboza (INPE)06/10/2026, 11:45
Este trabalho apresenta um pipeline não supervisionado para análise das características de propagação de descargas nuvem-solo positivas (+CG) e negativas (-CG), registradas por câmeras de alta velocidade. A partir de 25 vídeos (8 positivos e 17 negativos, exportados em TIFF de 16 bits), o modelo EfficientNet-B3 foi utilizado como extrator genérico de características visuais, sem ajuste fino...
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Dr Arian González (UNIVAP)06/10/2026, 14:00
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Hadassa Raquel Peixoto Jácome (INPE)06/10/2026, 14:30
All magnetized planets in the Solar System exhibit auroral emissions at different wavelengths. Planetary auroral activity provides a remote projection of processes occurring within the planetary magnetospheres. Jupiter possesses the most powerful and complex aurora in the Solar System, with emissions organized into three distinct regions around its magnetic poles: the main auroral oval, the...
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José Neto (INPE)06/10/2026, 14:45
The ongoing study aims to predict geomagnetic disturbances at low latitudes with machine learning. For this, however, a treatment of missing data (gaps) in satellites and ground stations is necessary. In order to solve this problem, the Python library heliogap was developed, which automates the extraction, cleaning, and statistical gap analysis of solar wind parameters from OMNIweb/ACE and...
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Érik A. Barbosa (National Institute for Space Research (INPE))06/10/2026, 15:00
In this work we analyse the H-component of geomagnetic field at low latitude region (-17.88° S), the F10.7cm solar flux index, the Interplanetary Magnetic Field (IMF), the y-component of Solar Wind Electric Field (Ey) and the solar wind speed (Vsw) using multiscale analysis methods. The objective is to study coherence and phase relationship between these indexes, during geomagnetic storm...
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Manuela Antonelli (IFSP)06/10/2026, 15:15
O campo magnético das regiões ativas é a principal fonte de energia das explosões solares (flares) e das ejeções de massa coronal (CMEs), fenômenos que governam o clima espacial na vizinhança terrestre. Regiões de configuração magnética simples raramente produzem eventos intensos, enquanto regiões complexas podem gerar sequências de flares de classe M e X. O presente trabalho investiga quais...
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Jean Santos (instituto nacional de pesquisas espaciais)06/10/2026, 15:45
Solar flares are characterized by rapid enhancements in electromagnetic emission across multiple wavelengths. This study investigates the extreme ultraviolet (EUV) emission associated with the X8.2-class solar flare that occurred near the solar limb on 10 September 2017 in active region NOAA 12673. The region exhibited a 𝛽𝛾 magnetic configuration with interacting opposite-polarity flux systems...
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Eliah São Sabbas (INPE)06/10/2026, 16:00
The Transient Luminous Events (TLEs) are hybrid atmosphere-space plasmas that directly couple the Troposphere with the Ionosphere. They are transient and weakly ionized, with low-light level optical emissions (~kR- few MR), therefore observable only at night. They are excited in the upper atmosphere above thunderstorms by lightning discharges electromagnetic fields. These short plasmas (µs –...
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CLAUDIA MEDEIROS (INPE)07/10/2026, 09:00
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Vania Fátima Andrioli (INPE)07/10/2026, 09:30
Over the past decade, the collaboration between the National Institute for Space Research (INPE, Brazil) and the National Space Science Center (NSSC, Chinese Academy of Sciences) has significantly advanced the study of the Mesosphere and Lower Thermosphere (MLT) through the operation of the dual-beam sodium and potassium (Na-K) resonance LIDAR at São José dos Campos, Brazil. As the only...
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Suallyson Araújo (INPE)07/10/2026, 09:45
The Midnight Brightness Wave (MBW) is characterized by an enhancement in the intensity of terrestrial airglow emission near local midnight, particularly in the OI 630.0 nm emission, and is associated with the Midnight Temperature Maximum (MTM), which occurs mainly in equatorial and low-latitude regions. Brazil's continental extent and its broad latitudinal and longitudinal coverage provide a...
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Esfhan alam kherani (Researcher, INPE)07/10/2026, 10:00Methods, Instrumentation and Data Science in Space GeophysicsOral
Recentes estudos mostram que o monitoramento dos climas extremos no Near-Real-Time facilita o Now-Casting dos climas com feedback da simulação do mecanismo de acoplamento desses climas com a atmosfera e a ionosfera. O mecanismo envolve as ondas de gravidade acústicas (AGWs) e sua simulação no Near-Real-Time. Neste aspecto, a simulação rápida pode melhorar o desempenho do nowcasting. Este...
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Dr Femi Olajide-Owoyomi (National Institute for Space Research, INPE, Brasil.)07/10/2026, 10:15
Meteoric ablation is the main source of the metal layers in the mesosphere and lower thermosphere (MLT). Simultaneous observations of different metals in individual meteor trails can reveal how meteoroids ablate and how the trails evolve. We present a statistical study of 385 meteor trail events detected simultaneously by Na and K resonance lidars at sao jose dos campos on 174 nights between...
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Dr Tagianne da Silva (INPE)07/10/2026, 10:45
The increasing expansion of wind power generation has highlighted the vulnerability of wind turbines (WTs) to lightning strikes, particularly upward flashes. Due to their height and blade rotation, WTs exhibit initiation and attachment processes distinct from those in static structures. This work analyzes the physical processes involved in the development of upward lightning in WTs using...
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Jesus Alberto Nunez (National Institute for Space Research)07/10/2026, 11:00
We investigate a Phantom Forbush Decrease event on January 31, 2012. Phantom Forbush Decreases are sudden cosmic ray depressions without clear in-situ signatures of interplanetary coronal mass ejections (ICMEs), and their origin remains poorly understood. Using multi- instrument remote-sensing, in-situ, and ground-based data, six preceding CMEs are identified,including two fast full-halo...
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Abdala Elias Nader (INPE)07/10/2026, 11:15
This research investigates the impact of aerosol-solar radiation interaction on atmospheric stability and lightning activity in the Metropolitan Region of São Paulo (RMSP). Literature provides evidence of a boomerang-shaped behavior in lightning activity due to increasing aerosol concentrations. While aerosols influence clouds through both microphysical (indirect) and radiative (direct)...
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Marlos Rockenbach (INPE)07/10/2026, 11:30
Muons are secondary particles formed by the interaction of a primary Galactic Cosmic Ray with the Earth's atmosphere, whose primary proton is influenced by a solar magnetic structure that travels throughout the heliosphere. This interaction between the primary proton and solar structures is known as Heliospheric Modulation of cosmic rays. The solar structures that cause the most intense cosmic...
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Alexandre Sacata07/10/2026, 11:45
O método MultiFractal Detrended Fluctuations Analysis (MFDFA) tem sido amplamente utilizado e aplicado em várias áreas tais como Medicina, Economia, Física, Ciências Atmosféricas e etc. para estudar a multifractalidade de séries temporais. Em âmbito de ciências espaciais, estudos anteriores constataram que lâminas de corrente poderiam originar a multifractalidade do vento solar. Mas quando tal...
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Prof. Paulo Batista (INPE), Prof. Paulo Prado Batista (INPE)07/10/2026, 14:00
A região da atmosfera compreendida entre aproximadamente 20 e 110 quilômetros de altitude é conhecida como média atmosfera. Esta região fica acima da troposfera e baixa estratosfera, onde os eventos meteorológicos ocorrem e abaixo da termosfera que é altamente afetada pela variabilidade solar. Imerso nesta região é de especial interesse a região entre 80 e 110 quilômetros de altura, comumente...
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Carlos Eduardo Quintanilha (INPE)07/10/2026, 14:30
During the Laschamps excursion, Earth’s geomagnetic field deviated strongly from its usual dipolar structure, possibly creating a magnetosphere markedly different from today’s. Using global MHD simulations driven by a solar coronal mass ejection, this study starts the comparison of the modern IGRF field with a reconstructed Laschamps configuration to examine changes in plasma regions, current...
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Adriany Barbosa (INPE)07/10/2026, 14:45
Accurate temperature monitoring is essential in a wide range of scientific and technological applications, particularly in systems whose performance is sensitive to thermal variations. In thermal radiometry, temperature measurement can play a central role in the determination of the absorbed radiant power. In electrical substitution radiometers, for example, the heating produced by incident...
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Laíne Soares (Instituto Nacional de Pesquisas Espaciais)07/10/2026, 15:00
The heat flux in the solar wind is a fundamental mechanism for understanding the expansion, thermal pressure gradient, and global thermodynamics of interplanetary plasma. Due to the weakly collisional nature of this medium, electrons organize themselves into distinct populations (core, halo, and strahl), with suprathermal electrons being the main conductors of thermal energy along the magnetic...
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javier silva (Instituto Nacional de Pesquisas Espaciais)07/10/2026, 15:15
In this study, we applied machine learning techniques to perform an unsupervised clustering of THEMIS satellite orbits to detect magnetosheath crossings. We used the DBSCAN algorithm to analyze crossings within a range of less than 40 Earth radii, focusing on data from the THEMIS-B (THB) and THEMIS-C (THC) spacecraft during 2008 and 2009. These spacecraft were selected due to their eccentric...
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Dr Manilo Soares (UFRN)07/10/2026, 15:45Methods, Instrumentation and Data Science in Space GeophysicsOral
O MPPSim é uma plataforma computacional multifísica, modular e de alto desempenho, ainda em desenvolvimento e com planos de se tornar aberta. Sua arquitetura combina uma grade canônica com vistas configuráveis e um sistema de plugins dinâmicos, permitindo que solvers de plasmas (PIC/FDTD), fluidos (FVM/SPH), meios granulares (DEM) e sólidos deformáveis (FEM) sejam acoplados de forma flexível,...
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Cecilia Sa (INPE)07/10/2026, 16:15
Magnetic reconnection is a fundamental physical process that converts magnetic energy into plasma energy. It occurs in regions where the restructuring of field line topology and particle acceleration are enabled by the violation of the frozen-in flux condition. This work presents a detailed investigation of the microphysics of this process, focusing on the Electron Diffusion Region (EDR),...
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Laíne Soares (Instituto Nacional de Pesquisas Espaciais)
Uma Oficina muito legal
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