SA52A:
Transient Forcing of Magnetosphere-Ionosphere-Thermosphere Dynamics at Different Scales II

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Session ID#: 32387

Session Description:
The dynamics of the magnetosphere-ionosphere-thermosphere system is strongly driven by magnetopause reconnection. Transient reconnection gives rise to flow channels, waves, instabilities, and turbulence phenomena that cascades to efficient heating of the thermosphere-ionosphere system. Coordinated observations, theory and modelling of multi-scale physics are needed to decode the complexity of the MIT system dynamics. We highlight the importance of transient and localized processes for the IT system, understanding their contribution to the energy budget, together with advanced data assimilation, and improvement of upper boundary driving of Global Circulation Models. This is needed to develop a proper physical description of the ionosphere-thermosphere system response to transient reconnection, including space weather phenomena such as radio waves, mesoscale flows, scintillations, ion upwelling and satellite drag. This session focuses on all aspects of high-latitude dynamics, including micro- and macro-scale physics, field-aligned currents and flow dynamics, generation of waves, instabilities, thermospheric heating and cooling, and scintillation phenomena.
Primary Convener:  Joran Idar Moen, University of Oslo, Physics Department, Oslo, Norway
Conveners:  Olga P Verkhoglyadova, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Cheryl Y Huang, Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States and Douglas E. Rowland, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Chairs:  Joran Idar Moen, University of Oslo, Oslo, Norway and Olga P Verkhoglyadova, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
OSPA Liaison:  Douglas E. Rowland, NASA Goddard Space Flight Center, Heliophysics Sci. Div., Greenbelt, MD, United States

Cross-Listed:
  • SM - SPA-Magnetospheric Physics
Index Terms:

0358 Thermosphere: energy deposition [ATMOSPHERIC COMPOSITION AND STRUCTURE]
2437 Ionospheric dynamics [IONOSPHERE]
2706 Cusp [MAGNETOSPHERIC PHYSICS]
2736 Magnetosphere/ionosphere interactions [MAGNETOSPHERIC PHYSICS]

Abstracts Submitted to this Session:

Multiple reconnection at the magnetopause and its impact on cusp dynamics (Invited) (210125)
Stephen A Fuselier, Southwest Research Institute, San Antonio, TX, United States, Karlheinz J Trattner, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Petrinec M Steven, Lockheed Martin Advanced Technology Center, Palo Alto, CA, United States and Craig Kletzing, University of Iowa, Physics and Astronomy, Iowa City, United States
High-Latitude Ionosphere-Thermosphere Heating by Alfvénic Fluctuations (Invited) (205914)
William Lotko, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States and Binzheng Zhang, National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States
Survey of Pc3-5 ULF velocity oscillations in SuperDARN THEMIS-mode data: Occurrence statistics and driving mechanisms (257901)
Xueling Shi1, J. Michael Ruohoniemi1, Joseph BH Baker2, Dong Lin3, Emma C Bland4, Michael Hartinger5 and Wayne Scales2, (1)Virginia Polytechnic Institute and State University, Blacksburg, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)NCAR, Boulder, United States, (4)The University Centre in Svalbard, Svalbard, Norway, (5)National Institute of Aerospace, Hampton, VA, United States
High-latitude ion and neutral temperature variations from Dynamics Explorer 2 observations (235357)
Yanshi Huang1, Cheryl Y Huang2 and Yi-Jiun Su2, (1)HIT Harbin Institute of Technology, Shenzhen, Shenzhen, China, (2)Air Force Research Laboratory, Kirtland AFB, NM, United States
Do Transient Electrodynamic Processes Support Enhanced Neutral Mass Densities in Earth's Cusp-Region Thermosphere via Divergent Upward Winds? (264904)
Mark Conde1, Miguel Folkmar Larsen2, Riley Troyer3, Dillon Gillespie3 and Michael Kosch4, (1)University of Alaska Fairbanks, Space Physics, Fairbanks, AK, United States, (2)Clemson University, Department of Physics & Astronomy, Clemson, SC, United States, (3)University of Alaska Fairbanks, Physics, Fairbanks, AK, United States, (4)South African National Space Agency, Hermanus, South Africa
Understanding Transient Forcing with Plasma Instability Model, Ionospheric Propagation Model and GNSS Observations (283798)
Kshitija Deshpande1, Matthew D Zettergren1 and Seebany Datta-Barua2, (1)Embry-Riddle Aeronautical University, Department of Physical Sciences, Daytona Beach, FL, United States, (2)Illinois Institute of Technology, Mechanical and Aerospace Engineering, Chicago, United States
Channels of Reversed Flow in the Polar Ionosphere (251227)
Kjellmar Oksavik1,2, Kristian Reed1, J. Michael Ruohoniemi3, Joseph B. H. Baker3, Bharat Kunduri3, Dag A Lorentzen4, Lisa J Baddeley4 and Katie Herlingshaw4, (1)University of Bergen, Birkeland Centre for Space Science, Bergen, Norway, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)Virginia Polytechnic Institute and State University, Blacksburg, United States, (4)UNIS, Longyearbyen, Norway
Effects of high-latitude forcing uncertainty on the low- and mid-latitude ionosphere (Invited) (206695)
Nicholas M Pedatella1,2, Gang Lu3 and Arthur D Richmond3, (1)NSF National Center for Atmospheric Research, High Altitude Observatory, Boulder, United States, (2)National Center for Atmospheric Research, High Altitude Observatory, Boulder, United States, (3)National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States
Studies of small scale irregularities in the cusp ionosphere using sounding rockets: recent results (Invited) (274023)
Kjellmar Oksavik1, Askar A. Ilyasov2, Wojciech J. Miloch1, Alexander A. Chernyshov2,3, Joran Moen4, Lasse Boy Novock Clausen1 and Yoshifumi Saito5, (1)University of Oslo, Department of Physics, Oslo, Norway, (2)Space Research Institute of the Russian Academy of Sciences, Moscow, Russia, (3)Moscow Institute of Physics and Technology, Moscow, Russia, (4)University Centre in Svalbard, Longyearbyen, Norway, (5)ISAS Institute of Space and Astronautical Science, Kanagawa, Japan

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