- Research Grants
Bachelors in physics from Universidade de São Paulo (1979), master's and doctorate at Space Science from Instituto Nacional de Pesquisas Espaciais (1983 and 1989, respectively). Titular Researcher of National Institute for Space Research, and researcher collaborator and professor at Mackenzie University. Principal Investigator of research project supported by CNPq/PROANTAR, and responsible by the ionospheric studies at Estação Antártica Comandante Ferraz. Brazilian partner and co-chair of a research activity of the Expert Group of SCAR 'GNSS Research and Application for Polar Environment - GRAPE). Member of the Brazilian delagates in SCAR in the Permanent Scientific Group of Physical Science. Coordinated an atmospheric investigation inside the Instituto Nacional de Ciência e Tecnologia Antártico de Pesquisas Ambientais (INCT-APA) of the UFRJ from 2010 to 2017. Has experience in Astronomy and Aeronomy, focusing on Solar Physics and high earth atmosphere, acting on the area of science and geoscience applications in the following subjects: ionosphere radio soundings (VLF, ionosonde, GPS and riometer), solar flares, sun-earth interactions, space weather, Van Allen radiation belts. The goal is to characterize the ionospheric irregularities from high to low latitudes in the South American sector, and their impact in the telecommunications, sattelite navigation and other applications that use GNSS systems. (Source: Lattes Curriculum)
The electrodynamics characterization of the ionosphere in the face of the conditions of the space (space weather) around the Earth has become increasingly necessary in the last decades due to its implications for modern society. Although their impacts are not yet known to the general public, they are already recognized as a new natural hazard of modern technological society. The conditi...
(Only some records are available in English at this moment)
The aim of this is to study the variation in the intensity of low-energy cosmic rays from long to short term time scales. The intensity of cosmic rays in the Earth's surface changes with time and shows variations related to the 11-year solar cycle and shorter-duration phenomena like flares and CME's, which may cause significant effects in the near-Earth environment. Some studies have ev...
One of the consequences of solar flares in the ionosphere is the sudden increase of electron concentration in the D-region, which is detected as advances in phase of the VLF signals, the so-called 'Sudden Phase Anomalies' (SPAs). It is also known that over 18% of solar flares recorded not produce SPAs, there are few studies that could explain the reasons for this fact. Changes in the el...
(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)
|Data from Web of Science|