SA001
Advances in Equatorial Thermosphere and Ionosphere Studies

Session ID#: 74657

Session Description:
This session focuses on understanding the dynamic and couplingprocesses of the thermosphere and ionosphere at equatorial latitudes during both quiet and disturbed periods. This includes equatorial ionospheric response to geomagnetic storms, storm-time penetration and disturbance dynamo electric fields, equatorial spread F/plasma bubbles, scintillations and their effects on communication andnavigation systems, equatorial electrojet, vertical coupling of the atmosphere and ionosphere or forcing from below (planetary waves, tides, gravity waves, etc.) and induced ionospheric disturbances such as TIDs, and longitudinal variations of thermospheric and ionospheric parameters. We welcome observational, theoretical, and modeling studies that advance our understanding and enable us to better forecast the low-latitude thermospheric and ionospheric behaviors, especially during geomagnetic storms. Presentations on new instruments and observational methods are also encouraged
Co-Organized:
  • SM - SPA-Magnetospheric Physics
Index Terms:

2415 Equatorial ionosphere [IONOSPHERE]
2431 Ionosphere/magnetosphere interactions [IONOSPHERE]
2437 Ionospheric dynamics [IONOSPHERE]
2441 Ionospheric storms [IONOSPHERE]

Primary Convener:  Elvira Astafyeva, Institut de Physique du Globe de Paris, Paris, France
Conveners:  Chaosong Huang, Air Force Research Laboratory, Kirtland Afb, NM, United States, Huixin Liu, Kyushu University, Fukuoka, Japan and Endawoke Yizengaw, The Aerospace Corporation, El Segundo, United States
Primary Liaison:  Elvira Astafyeva, Institut de Physique du Globe de Paris, Paris, France
 
Day-to-day Variability of the Equatorial Ionization Anomaly (EIA) over the Brazilian Sector Using GNSS-TEC Network During the Descending Phase of the Solar Cycle 24 (486336)
Paulo Roberto Fagundes1, Maukers Dias2, Venkatesh Kavutarapu3, Valdir Gil Pillat3 and Brunno AG Ribeiro4, (1)University of Vale do Paraíba, Fisica & Astronomia, Sao Jose dos Campos, Brazil, (2)UNIVAP, PPGFA, São José dos Campos, Brazil, (3)UNIVAP University of Vale do Paraíba, Sao Jose dos Campos, Brazil, (4)Universidade do Vale do Paraíba, São José dos Campos, Brazil
 
Multi-instrumental Observation of Storm-induced Ionospheric Plasma Bubbles at Equatorial and Middle Latitudes (Invited) (487263)
Irina Zakharenkova1, Iurii Cherniak1,2 and Andrzej Krankowski1, (1)University of Warmia and Mazury in Olsztyn, Space Radio-Diagnostics Research Centre, Olsztyn, Poland, (2)University Corporation for Atmospheric Research, Boulder, United States
 
Seeding, structuring, and decaying of equatorial plasma bubbles simulated by High-Resolution Bubble (HIRB) model (Invited) (488261)
Tatsuhiro Yokoyama1, Hidekatsu Jin2, Hiroyuki Shinagawa2, Charles L Rino3 and Charles Carrano4, (1)Kyoto University, Research Institute for Sustainable Humanosphere, Kyoto, Japan, (2)NICT, Tokyo, Japan, (3)Rino Consulting, Menlo Park, CA, United States, (4)Boston College, Institute for Scientific Research, Newton, United States
 
Characteristics of penetration, shielding, and disturbance dynamo electric fields in the equatorial ionosphere during a geomagnetic storm (488509)
Chaosong Huang, Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States
 
NEW EPB HIGH-RESOLUTION SIMULATION DIAGNOSTICS (489759)
Charles L Rino, Rino Consulting, Menlo Park, CA, United States; Boston College, Institute for Scientific Research, Chesnut Hill, MA, United States, Tatsuhiro Yokoyama, Kyoto University, Research Institute for Sustainable Humanosphere, Kyoto, Japan and Charles Carrano, Boston College, Institute for Scientific Research, Newton, United States
 
Study on Medium-Scale Traveling Ionospheric Disturbances Observed in the South American Equatorial Region (491663)
Patrick Essien1, Hisao Takahashi2, Cosme Alexandre Oliveira Barros Figueiredo2, Cristiano M. Wrasse2, Diego Barros2 and Delano Gobbi2, (1)CCST / INPE, Brazil, Space Geophysics, Sao Jose dos Campos, Brazil, (2)National Institute for Space Research (INPE), São José dos Campos, Brazil
 
Study of the F3 and StF4 layers formation and the TEC near the southern crest of the EIA at the low latitude region in the Brazilian sector (494094)
Alexandre Tardelli1, Paulo Roberto Fagundes2, Valdir Gil Pillat2 and Brunno AG Ribeiro3, (1)University of Vale do Paraíba, Sao Jose dos Campos, Brazil, (2)UNIVAP University of Vale do Paraíba, Sao Jose dos Campos, Brazil, (3)Universidade do Vale do Paraíba, São José dos Campos, Brazil
 
A Statistical Study of the Longitudinal Difference of the Equatorial Ionospheric Anomaly (EIA) between the eastern Asian and American sectors in a Solar Cycle Timescale: 2000-2011. (496979)
Jing Liu and Donghe Zhang, Peking University, Beijing, China
 
Ionospheric Climatology during Solar Cycle-24 over Indian Low Latitude Region (498423)
Sardar Singh Rao, Banaras Hindu University, Physics, Varanasi, 221, India and Abhay Kumar Singh, Banaras Hindu University, Varanasi, India
 
Modeling the Impact of Metal Ions on Equatorial Spread F with SAMI3/ESF (498995)
Joseph Huba, Syntek Technologies, Fairfax, VA, United States, Jonathan Krall, Naval Research Laboratory, Alexandria, VA, United States and Douglas Patrick Drob, Naval Research Lab, Space Science Division, Washington, DC, United States
 
Statistical analysis of the equatorial plasma irregularities retrieved from Swarm 2013--2019 observations (506168)
Ercha Aa, Chinese Academy of Sciences, National Space Science Center, Beijing, China, Shasha Zou, University of Michigan, Ann Arbor, MI, United States and Siqing Liu, Chinese Academy of Sciences, National Space Science Center, Beijng, China
 
Longitudinal Features of Low-Latitude Scintillation and Forcing from Lower Thermosphere (506339)
Endawoke Yizengaw, Aerospace Corporation El Segundo, El Segundo, CA, United States and Keith M Groves, Boston College, Institute for Scientific Research, Chestnut Hill, MA, United States
 
Variability of the Sq Current: Causality and Monitoring (506351)
Jesper W Gjerloev, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States and Matthew Friel, Johns Hopkins University Applied Physics Laboratory, Laurel, United States
 
Climatology of the equatorial plasma bubbles captured by FORMOSAT-3/COSMIC (507206)
Min-Yang Chou1, Qian Wu2, Nicholas M Pedatella3, Iurii Cherniak4, William Steven Schreiner1 and John Braun5, (1)University Corporation for Atmospheric Research, Boulder, CO, United States, (2)NCAR, Boulder, CO, United States, (3)National Center for Atmospheric Research, Boulder, CO, United States, (4)University Corporation for Atmospheric Research, Boulder, United States, (5)Univ Corp Atmospheric Research, Boulder, CO, United States
 
Asymmetry of the Equatorial Ionization Anomaly (EIA) over the African low-latitude region (509376)
Paul Obiakara Amaechi, Elijah Oyeyemi and Andrew Akala, University of Lagos, Lagos, Nigeria
 
Structures of multiple large-scale traveling ionospheric disturbances observed by dense Global Navigation Satellite System networks in China (509835)
Ge Chen1, Feng Ding2, Weixing Wan3, Lianhuan Hu4, Xiukuan Zhao2 and Jianyong Li5, (1)Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (2)Institute of Geology and Geophysics Chinese Academy of Sciences, Beijing, China, (3)University of the Chinese Academy of Sciences, Beijing, China, (4)Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China, Beijing, China, (5)China Earthquake Networks Center, China Earthquake Administration, Beijing, China
 
Variability of TEC and Ionospheric Irregularities With Phases of Solar Cycle Within EIA Over East and West African Regions (512184)
R. B. Abdulrahim, National Space Research & Development Agency, Garki, Nigeria, Akeem Babatunde Rabiu, National Space Research & Development Agency, Centre for Atmospheric Research, Garki, Nigeria and Daniel Okoh, Center for Atmospheric Research, National Space Research & Development Agency, Kogi State University Campus, Anyigba 270109, Nigeria., Anyigba, Nigeria
 
Abnormal Deep Plasma Depletions at Geomagnetic Equator Observed by CHAMP in the Pre-midnight Sector (513780)
Yaoyu Tian, Yongqiang Hao, Donghe Zhang and Zuo Xiao, Peking University, Beijing, China
 
Interannual and long-term variability of atmospheric tides in GAIA model and its comparison with ground and space based observations (513994)
Dupinder Singh and Huixin Liu, Kyushu University, Fukuoka, Japan
 
Space-time Variations of the Equatorial Ionization Anomaly (EIA) over the Brazilian Sector Using GPS-TEC Network and IRI Model Data During the Descending Phase of the Solar Activity (515061)
Maukers Dias1, Paulo Roberto Fagundes2, Venkatesh Kavutarapu2, Valdir Gil Pillat2, Brunno AG Ribeiro3 and Gopi Krishna Seemala4, (1)UNIVAP, PPGFA, São José dos Campos, Brazil, (2)UNIVAP University of Vale do Paraíba, Sao Jose dos Campos, Brazil, (3)Universidade do Vale do Paraíba, São José dos Campos, Brazil, (4)Organization Not Listed, Indian Institute of geomagnetism, Washington, DC, United States
 
Morphological Characteristics of the Station-to–Trough ratio of the African Equatorial Ionization Anomaly (EIA) during the maximum phase of solar cycle 24 (515455)
Oluwole Oyedokun, Andrew O Akala and Elijah Oyeyemi, University of Lagos, Lagos, Nigeria
 
Response of global ionosphere to 2018 sudden stratosphere warming (SSW) event (533763)
Chalachew Kindie Mengist1 and Kyong-Hwan Seo1,2, (1)Research Center for Climate Sciences, Pusan National University, Busan, South Korea, (2)Department of Atmospheric Sciences, Pusan National University, Busan, South Korea
 
VARIATION OF GLOBAL POSITIONING SYSTEM DERIVED TOTAL ELECTRON CONTENT OBSERVED AT GHERMU STATION FOR THE YEAR 2015 AND 2016 (535113)
Utkrist Ghimire1, Basudev Ghimire2 and Balaram Khadka1, (1)St. Xavier's College, Kathmandu, Nepal, (2)Tribhuvan University, Physics, Kathmandu, Nepal
 
Long-Term Trends of Topside Ionospheric Electron Density Derived from DMSP Data (535980)
Xinan Yue1, Yihui Cai2, Shunrong Zhang3, Wenbin Wang4, Huixin Liu5, Libo Liu2 and Weixing Wan2, (1)Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, China, (2)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (3)MIT Haystack Observatory, Westford, MA, United States, (4)NCAR, HAO, Boulder, CO, United States, (5)Kyushu University, Fukuoka, Japan
 
The results of the magnetosphere-ionosphere couplingon plasma irregularitiesover India during the September 2017 storm (536951)
Lucilla Alfonsi1, Claudio Cesaroni1, Luca Spogli2, Ashik Paul, Sarbani Ray4, Haris Haralambous5, Christina Oikonomou6, Mauro Regi7, Stefania Lepidi7 and Domenico Di Mauro8, (1)Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy, (2)INGV National Institute of Geophysics and Volcanology, Rome, Italy, (3)University of Calcutta, Kolkata, India, (4)Frederick University Cyprus, Nicosia, Cyprus, (5)Researcher, Nicosia, Cyprus, (6)Istituto Nazionale di Geofisica e Vulcanologia, L'Aquila, Italy, (7)Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
 
Topside Equatorial Vertical Ionospheric Plasma Drifts over Jicamarca (540505)
Luis Navarro1, Bela G Fejer1 and Marco A Milla2, (1)Utah State University, Logan, UT, United States, (2)University of Illinois at Urbana Champaign, Electrical and Computer Engineering, Urbana, IL, United States
 
Analysis of Equatorial GNSS Signal Scintillation and Stratospheric Gravity Waves Observed by COSMIC RO Method (546551)
Qian Wu, National Center for Atmospheric Research, Boulder, CO, United States, William Steven Schreiner, University Corporation for Atmospheric Research, Boulder, CO, United States, Min-Yang Chou, United States, Iurii Cherniak, University Corporation for Atmospheric Research, Boulder, United States, John Braun, Univ Corp Atmospheric Research, Boulder, CO, United States and Eelco Doornbos, Royal Netherlands Meteorological Institute, Aerospace Engineering, De Bilt, Netherlands
 
Daytime GNSS signal fading and scintillation associated with solar burst events (552627)
Eurico R De Paula1, André R. F. Martinon1, José A.C.F. Neri2, Alison de Oliveira Moraes3, Jose Roberto Cecatto4, Mangalathayil Ali Abdu5, Jose H A Sobral6, Acácio Cunha Neto1, Joao Francisco Galera Monico7, Bruno Cesar Vani8, Inez Staciarini Batista9 and Jonas Rodrigues de Souza10, (1)INPE National Institute for Space Research, Aeronomy Division, Sao Jose dos Campos, Brazil, (2)INPE National Institute for Space Research, Astrophysics, Sao Jose dos Campos, Brazil, (3)Aeronautics and Space Institute (IAE), Sao Jose dos Campos, Brazil, (4)INPE National Institute for Space Research, Sao Jose dos Campos, Brazil, (5)Inst Nat Pesquisas Espac CP515, Sao Jose Dos Campos, Brazil, (6)INPE, Sao Jose Dos Campos, SP, Brazil, (7)FCT/UNESP, Presidente Prudente, Brazil, (8)UNESP Sao Paulo State University, Regente Feijó, Brazil, (9)INPE, Sao Jose Dos Campos, Brazil, (10)INPE - National Institute for Space Research, São Jose dos Campos, Brazil
 
Modifications of Ionospheric Irregularities Over the African and American EIA Crests During the Major Arctic Sudden Stratospheric Warming of 2013. (553135)
Omena Idolor1, Andrew Akala1 and Bolaji Oluwasegun1,2, (1)University of Lagos, Department of Physics, Lagos, Nigeria, (2)University of Tasmania, Department of Physics, Hobart, Australia
 
Variability of Ionospheric Storm-Time electric Fields (553302)
Bela G Fejer, Utah State University, Logan, UT, United States, Luis Navarro, Instituto Geofísico del Perú, Jicamarca Radio Observatory, Lima, Peru and Stanislav Y Sazykin, Rice University, Physics and Astronomy Department, Houston, TX, United States
 
Understanding and mitigating errors in optical airglow emissions (555063)
Dustin A. Hickey, US Naval Research Laboratory, Space Science Division, Washington, DC, United States and Clayton Coker, US Naval Research Laboratory, Washington, DC, United States
 
First Measurement From the Geostationary Orbit of the Equatorial Plasma Bubble (EPB) Characteristics Using GOLD Data (555403)
Deepak Kumar Karan1, Scott England2, Robert Edward Daniell3, Carlos R. Martinis4, Richard Eastes5, Alan Geoffrey Burns6 and William E McClintock5, (1)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (2)Virginia Polytechnic Institute and State University, Virginia, VA, United States, (3)Ionospheric Physics, Stoughton, MA, United States, (4)Boston University, Center for Space Physics, Boston, MA, United States, (5)University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (6)NCAR, HAO, Boulder, CO, United States
 
Evaluating GNSS receiver robustness at low latitudes under ionospheric scintillation (556728)
André R. F. Martinon1, Eurico R De Paula1, José A.C.F. Neri2, Stephan Stephany3, Alison de Oliveira Moraes4, Bruno Cesar Vani5, Joao Francisco Galera Monico6 and Jonas Rodrigues de Souza7, (1)INPE National Institute for Space Research, Aeronomy Division, Sao Jose dos Campos, Brazil, (2)INPE National Institute for Space Research, Astrophysics, Sao Jose dos Campos, Brazil, (3)INPE National Institute for Space Research, Laboratory for Computing and Applied Mathematics, Sao Jose dos Campos, Brazil, (4)Aeronautics and Space Institute (IAE), Sao Jose dos Campos, Brazil, (5)UNESP Sao Paulo State University, Regente Feijó, Brazil, (6)FCT/UNESP, Presidente Prudente, Brazil, (7)INPE - National Institute for Space Research, São Jose dos Campos, Brazil
 
On the variations of the total electron content observed over Southern Vietnam (560193)
Tam Dao1, Minh Huy Le2, Brett A Carter3, Que Le4 and Thanh Thuy Trinh4, (1)RMIT University, Melbourne, VIC, Australia, (2)Institute of Geophysics Vietnam Academy of Science and Technology, Hanoi, Vietnam, (3)RMIT University, SPACE Research Centre, Melbourne, VIC, Australia, (4)International University, Vietnam National University, Ho Chi Minh City, Vietnam
 
ScintPi: An inexpensive, easy‐to‐build ionospheric scintillation monitor for distributed sensor studies of space weather, education, and citizen science initiatives (568553)
Fabiano S Rodrigues, University of Texas at Dallas, Richardson, TX, United States and Alison de Oliveira Moraes, Aeronautics and Space Institute (IAE), Sao Jose dos Campos, Brazil
 
Diurnal and seasonal variations in the Schumann Resonance observed at Kuju Japan (573444)
Akihiro Ikeda1, Teiji Uozumi2, Akimasa Yoshikawa3, Akiko Fujimoto4 and Shuji Abe2, (1)Kagoshima National College of Technology, Kagoshima, Japan, (2)Kyushu University, International Center for Space Weather Science and Education, Fukuoka, Japan, (3)Kyushu University, Faculty of Science, Fukuoka, Japan, (4)Kyushu Institute of Technology, Department of Artificial Intelligence, Izuka, Japan
 
On the Daytime Inter-Hemispheric Asymmetry associated with Immediate Response of Low Latitude Ionosphere to Prompt Penetration Electric Field (577744)
Sunanda Suresh, Andhra University, Department of Physics, Visakhapatnam, India, Nirvikar Dashora, National Atmospheric Research Laboratory, Gadanki, India and Kandula Niranjan, Andhra University, Visakhapatnam, India
 
Equatorial ionospheric electric fields during solar flares and geomagnetic storms (580585)
Ruilong Zhang, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China and Libo Liu, University of the Chinese Academy of Sciences, Beijing, China
 
Detection of medium-scale traveling ionospheric disturbances with TIMED/GUVI limb observations at mid and low latitude regions (586139)
Gilles Wautelet, Université de Liège, Liege, Belgium, Benoit A Hubert, University of Liège, Liège, Belgium and Jean-Claude M C Gerard, Université de Liège, LPAP - STAR Institute, Liege, Belgium
 
An Investigation into the Peak Apex-Altitude Distributions of Equatorial Ionospheric Irregularities (589691)
Dev Raj Joshi1, Keith M Groves2, John Michael Retterer3, Patrick Roddy4 and Chaosong Huang4, (1)Boston College/Inst Sci Res, Chestnut Hill, MA, United States, (2)Boston College, Institute for Scientific Research, Chestnut Hill, MA, United States, (3)Boston Coll-Scientific Rsrch, Chestnut Hill, MA, United States, (4)Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States
 
Characteristics of equatorial morning overshoot observed by the Swarm constellation (593988)
Tae-yong Yang, KASI Korea Astronomy and Space Science Institute, Daejeon, Korea, Republic of (South), Jaeheung Park, KASI Korea Astronomy and Space Science Institute, Daejeon, South Korea, Young-Sil Kwak, KASI, Daejeon, South Korea, Koh-Ichiro Oyama, NCKU National Cheng Kung University, Institute of Plasma and Space Science, Tainan, Taiwan and Joseph I Minow, NASA MSFC, Huntsville, AL, United States
 
Test of a Multigrid Method for Ionospheric Temperature Modeling (596848)
Christopher Andrew Jeffery, Los Alamos National Laboratory, Los Alamos, NM, United States, Keeley R Costigan, Los Alamos National Laboratory, Earth and Environmental Sciences Division, Los Alamos, NM, United States, Erin H Lay, Los Alamos National Lab, Los Alamos, NM, United States and Heidi E Morris, Los Alamos National Laboratory, XCP-6, Los Alamos, NM, United States
 
Storm-time Ionospheric Electrodynamics During the September 2017 Geomagnetic Storm (599370)
Stanislav Y Sazykin1, Anastasia Newheart2, Bela G Fejer3, Luis Navarro4, Joseph D Huba5, Anthea Coster6, Victoria N Coffey7, Michael O Chandler8, Marc R Hairston9 and Philip John Erickson6, (1)Rice University, Physics and Astronomy Department, Houston, TX, United States, (2)Rice University, Houston, TX, United States, (3)Utah State University, Logan, UT, United States, (4)Instituto Geofísico del Perú, Jicamarca Radio Observatory, Lima, Peru, (5)Johns Hopkins University Applied Physics Laboratory, Laurel, United States, (6)MIT Haystack Observatory, Westford, MA, United States, (7)NASA Marshall Space Flight Ctr, Huntsville, AL, United States, (8)NASA-MSFC, Huntsville, AL, United States, (9)Univ of Texas at Dallas, Richardson, TX, United States
 
Game of drivers and a surprise ionospheric storm (601176)
Elvira Astafyeva, Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France and Mala S. Bagiya, Indian Institute of Geomagnetism, Navi Mumbai, India
 
Improvements in ISR experiments at Jicamarca for more accurate derivation of F region plasma parameters (603347)
Sevag Derghazarian and David L Hysell, Cornell University, Ithaca, NY, United States
 
Sources of day-to-day variability of equatorial electrojet (EEJ) currents (604857)
Chuan-Ping Lien1, Tomoko Matsuo2, Chih-Ting Hsu2, Astrid I Maute3, Arthur D Richmond4 and Dr Claudia Stolle5, (1)University of Colorado Boulder, Ann and H.J. Smead Aerospace Engineering Sciences, Boulder, CO, United States, (2)University of Colorado Boulder, Boulder, CO, United States, (3)NCAR/HAO, Boulder, CO, United States, (4)National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States, (5)GFZ German Research Centre for Geosciences, Potsdam, Germany
 
The role of the solar wind on the low-latitude ionosphere during the descending phase of solar cycle 24 (605571)
Claudia M Nicoli Candido1,2, Jiankui Shi3, Fabio Becker-Guedes2, Emilia Correia4, Jose Roberto Cecatto2, Virginia Klausner5, Chi Wang6, Stella P M Santos2, Frank Chingaranki7 and Zhengkuan Liu Mr1, (1)NSSC National Space Science Center, CAS, Beijing, China, (2)INPE National Institute for Space Research, Sao Jose dos Campos, Brazil, (3)NSSC/Chinese Academy of Sciences, Beijing, China, (4)Centro de Radio Astronomia e Astrofisica Mackenzie, Sao Paulo, Brazil, (5)Universidade do Vale do Paraíba, Departamento de Física e Astronomia, São José dos Campos, Brazil, (6)CSSAR, CAS, Beijing, China, (7)INPE, Sao Jose dos Campos, Brazil
 
A Statistical and Numerical Study of Presunrise Equatorial F-region Irregularities in the American Sector (608602)
Weijia Zhan1, Fabiano S Rodrigues1 and Nicholas M Pedatella2, (1)University of Texas at Dallas, Richardson, TX, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States
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