418:
Vertical Coupling in the Ionosphere–Thermosphere System III


Session ID#: 43041

Session Description:
The altitude range over which substantial energy and momentum are exchanged between the charged and neutral particles and where currents dissipate heat is generally lower than is easily accessible by ground of space-based diagnostics. Rocket measurements of the neutral winds [Larsen] and models of the neutrals winds [Hagan] in the so-called space transition region show large variability caused by tides and waves and their interactions. Likewise the current systems that are generated by such winds must be similarly structured with field-line integrated effects that influence the entire charged particle populations above the region. Since the region itself is so hard to describe observationally a natural question arises concerning our ability to describe its behavior based on remote measurements made above and/or below the region. We propose a special session to discuss the strengths and weaknesses associated with attempts to describe the behavior of the space transition region based on remotely located measurements. Papers addressing these topics and/or specific research questions or mission concepts are solicited.
Such discussions may include.
How measurements of Poynting flux are affected by neutral winds.
How particle energy deposition is dependent on neutral composition and the spectral content of particle fluxes
How winds in the upper thermosphere are related winds in the lower thermosphere
How wind driven current systems appear as plasma drifts in the upper atmosphere
How solar radiative spectral content affecting the lower atmosphere and E region is related to that affecting the upper atmosphere and F region during flares and non-flares.
How ground magnetometer data is used to determine ionospheric currents
How gravity waves affect the energy budget of the thermosphere
Primary Convener:  Roderick A Heelis, University Texas Dallas, Richardson, TX, United States
Conveners:  Douglas E. Rowland, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Larry J Paxton, Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States
Chairs:  Douglas E. Rowland, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Roderick A Heelis, University Texas Dallas, Richardson, TX, United States and Larry J Paxton, The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States

Abstracts Submitted to this Session:

418.01
Investigating High-latitude Thermosphere-Ionosphere Coupling using Data Assimilation: Current Understanding, Observational Challenges, and Outlook (334379)
Manbharat Singh Dhadly, US Naval Research Laboratory, Space Science Division (Code 7632), Washington, DC, United States, Douglas Patrick Drob, Naval Research Lab, Space Science Division, Washington, DC, United States and John T Emmert, Naval Research Laboratory, Washington, DC, United States
418.02
Effects of High-Latitude Electric Fields on Neutral Winds (Invited) (335104)
Gang Lu, National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States
418.03
Vertical Neutral Wind Measurements in the Midlatitude Thermosphere (335542)
Robert Kerr1, Juanita Riccobono2, Michael A Migliozzi2, Sudha Kapali3, John Noto2, Christiano Garnett Marques Brum4, Raul Garcia4, Eva Robles4 and Eframir Franco5, (1)Computational Physics Inc., Chelmsford, N. Chelmsford, MA, United States, (2)Computational Physics Inc., North Chelmsford, MA, United States, (3)Computational Physics Inc., North CHelmsford, MA, United States, (4)Arecibo Observatory, Space and Atmospheric Science, Arecibo, PR, United States, (5)Arecibo Observatory, Arecibo, PR, United States
418.04
Ground Based Height Profiling Technique to Resolve Altitude Variations of Neutral Winds in the Lower Thermosphere (335563)
Kylee Branning and Mark Conde, University of Alaska Fairbanks, Fairbanks, AK, United States
418.05
The Atmosphere-Space Transition Region Explorer (ASTRE) -- Using in situ Measurements on a Low Perigee Satellite to Understand How the Upper Atmosphere and Magnetosphere are Coupled (335883)
Robert F Pfaff Jr1, Douglas E. Rowland1, Roderick A Heelis2 and James H. Clemmons3, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University Texas Dallas, Richardson, TX, United States, (3)The Aerospace Corp, Los Angeles, CA, United States
418.06
Comparison of neutral winds in the thermosphere at altitudes of ~120km and ~240km over Alaska using an overlapping network of 4 all-sky implemented Fabry-Perot Interferometers (335902)
John Elliott and Mark Conde, University of Alaska Fairbanks, Fairbanks, AK, United States
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