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Earth Science
Brazil
2023

D-Index & Metrics

Earth Science

D-Index
49
Citations
7448
World Ranking
3673
National Ranking
17

Research.com Recognitions

  • 2023 - Research.com Earth Science in Brazil Leader Award
  • 2022 - Research.com Earth Science in Brazil Leader Award

Overview

J. H. A. Sobral is affiliated with the National Institute for Space Research in Brazil. Their research primarily focuses on areas within physics and astronomy as well as earth and planetary sciences. Sobral's work spans multiple subfields, including astronomy and astrophysics, aerospace engineering, geophysics, molecular biology, and atmospheric science.

The scientist has contributed extensively to topics related to ionosphere and magnetosphere dynamics, solar and space plasma dynamics, GNSS positioning and interference, earthquake detection and analysis, geomagnetism and paleomagnetism studies, atmospheric ozone and climate, and lightning and electromagnetic phenomena.

Recent publications demonstrate a continued interest in space physics and atmospheric phenomena. These include:

  • Some Differences in the Dynamics of the Intermediate Descending Layers Observed During Periods of Maximum and Minimum Solar Flux (2020, Journal of Geophysical Research Space Physics)
  • F Region Electric Field Effects on the Intermediate Layer Dynamics During the Evening Prereversal Enhancement at Equatorial Region Over Brazil (2021, Journal of Geophysical Research Space Physics)
  • Responses of intermediate layers to geomagnetic activity during the 2009 deep solar minimum over the Brazilian low-latitude sector (2022, Annales Geophysicae)
  • Intertropical Convergence Zone as the Possible Source Mechanism for Southward Propagating Medium-Scale Traveling Ionospheric Disturbances over South American Low-Latitude and Equatorial Region (2022, Atmosphere)
  • São Luís e Cachoeira Paulista DATA (2020, Zenodo (CERN European Organization for Nuclear Research))

Sobral frequently publishes in venues specializing in space physics and atmospheric sciences. The most common publication outlets include:

  • Journal of Geophysical Research Space Physics
  • Atmosphere
  • Advances in Space Research
  • Frontiers in Astronomy and Space Sciences
  • Zenodo (CERN European Organization for Nuclear Research)

Collaborations with other researchers are a significant component of Sobral's work. Frequent co-authors include:

  • I. S. Batista
  • J. R. Souza
  • C. G. M. Brum
  • M. A. Abdu
  • A. M. Santos

Best Publications

  • Global dayside ionospheric uplift and enhancement associated with interplanetary electric fields

    Bruce Tsurutani;Anthony Mannucci;Byron Iijima;Mangalathayil Ali Abdu

  • Prompt penetration electric fields (PPEFs) and their ionospheric effects during the great magnetic storm of 30-31 October 2003

    B. T. Tsurutani;B. T. Tsurutani;O. P. Verkhoglyadova;O. P. Verkhoglyadova;A. J. Mannucci;A. Saito

  • Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observational data from the SpreadFEx campaign

    M. A. Abdu;E. Alam Kherani;I. S. Batista;E. R. de Paula

  • Magnetospheric disturbance induced equatorial plasma bubble development and dynamics: A case study in Brazilian sector

    M. A. Abdu;I. S. Batista;H. Takahashi;J. MacDougall

  • Ionospheric plasma bubble climatology over Brazil based on 22 years (1977–1998) of airglow observations

    J. H.A. Sobral;M. A. Abdu;H. Takahashi;Michael J. Taylor

  • A new aspect of magnetic declination control of equatorial spread F and F region dynamo

    M. A. Abdu;I. S. Batista;J. H. A. Sobral

  • Equatorial ionospheric electric fields during magnetospheric disturbances: local time/longitude dependences from recent EITS campaigns

    M.A. Abdu;I.S. Batista;G.O. Walker;J.H.A. Sobral

  • Simultaneous observation of ionospheric plasma bubbles and mesospheric gravity waves during the SpreadFEx Campaign

    H. Takahashi;M. J. Taylor;P.-D. Pautet;A. F. Medeiros

  • Responses of the low-latitude ionosphere to very intense geomagnetic storms

    J.H.A Sobral;M.A Abdu;Cristina S Yamashita;W.D Gonzalez

  • Conjugate Point Equatorial Experiment (COPEX) Campaign in Brazil: Electrodynamics highlights on spread F development conditions and day-to-day variability

    M. A. Abdu;I. S. Batista;B. W. Reinisch;J. R. de Souza

  • Effects of intense storms and substorms on the equatorial ionosphere/thermosphere system in the American sector from ground‐based and satellite data

    J. H. A. Sobral;M. A. Abdu;W. D. González;B. T. Tsurutani

  • Magnetospheric disturbance effects on the Equatorial Ionization Anomaly (EIA) : an overview

    M.A. Abdu;J.H.A. Sobral;E.R. de Paula;I.S. Batista

  • Equatorial evening prereversal vertical drift and spread F suppression by disturbance penetration electric fields

    M. A. Abdu;E. A. Kherani;I. S. Batista;J. H. A. Sobral

  • Overview and summary of the Spread F Experiment (SpreadFEx)

    D. C. Fritts;M. A. Abdu;B. R. Batista;I. S. Batista

  • Spread F plasma bubble vertical rise velocities determined from spaced ionosonde observations

    M. A. Abdu;R. T. de Medeiros;J. H. A. Sobral;J. A. Bittencourt

  • Thermospheric meridional wind control of equatorial spread F and evening prereversal electric field

    M. A. Abdu;K. N. Iyer;R. T. de Medeiros;I. S. Batista

  • Equatorial evening prereversal electric field enhancement and sporadic E layer disruption: A manifestation of E and F region coupling

    M. A. Abdu;J. W. MacDougall;I. S. Batista;J. H. A. Sobral

  • Planetary wave signatures in the equatorial atmosphere ionosphere system, and mesosphere- E- and F-region coupling

    M.A. Abdu;T.K. Ramkumar;I.S. Batista;C.G.M. Brum

  • High resolution OI (630 nm) image measurements of F‐region depletion drifts during the Guará Campaign

    M. J. Taylor;J. V. Eccles;J. LaBelle;J. H. A. Sobral

  • Low- and mid-latitude ionospheric electric fields during the January 1984 GISMOS campaign

    Bela G. Fejer;M. C. Kelley;C. Senior;O. de la Beaujardiere

  • Electric field versus neutral wind control of the equatorial anomaly under quiet and disturbed condition: A global perspective from SUNDIAL 86

    Abdu;J.H.A. Sobral;N.B. Trivedi;B.M. Reddy

Frequent Co-Authors

M.A. Abdu
M.A. Abdu National Institute for Space Research
Inez S. Batista
Inez S. Batista National Institute for Space Research
H. Takahashi
H. Takahashi National Institute for Space Research
E. R. de Paula
E. R. de Paula National Institute for Space Research
Bruce T. Tsurutani
Bruce T. Tsurutani California Institute of Technology
Walter D. Gonzalez
Walter D. Gonzalez National Institute for Space Research
Michael J. Taylor
Michael J. Taylor Utah State University
John MacDougall
John MacDougall University of Western Ontario
Bela G. Fejer
Bela G. Fejer Utah State University
Bodo W. Reinisch
Bodo W. Reinisch University of Massachusetts Lowell

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