SA41A:
Interhemispheric Differences in High-Latitude Geospace II Posters


Session ID#: 8704

Session Description:
Our knowledge about the Sun-Earth interaction is to a large extent based on measurements from only the northern hemisphere. Recent datasets (SuperDARN, SuperMAG, AMPERE, satellite imaging and statistics from satellites such as CHAMP, Cluster and Swarm) provide measurements of several key parameters from both hemispheres simultaneously. Studies reveal that there are important differences between the hemispheres that depend on external drivers and on differences in ionospheric and thermospheric feedback (M-I-T coupling). This session calls for papers exploring interhemispheric asymmetries, and high latitude geospace as a two-hemisphere system. We welcome studies using conjugate observations, statistical techniques, as well as simulations and theoretical considerations.
Primary Convener:  Karl Laundal, University of Bergen, Department of Physics and Technology, Bergen, Norway
Conveners:  Matthias Foerster, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Steve E. Milan, University of Leicester, Leicester, United Kingdom and Nikolai Ostgaard, University of Bergen, Department of Physics and Technology, Bergen, Norway
Chairs:  Karl Laundal1, Matthias Foerster2, Nikolai Ostgaard1 and Steve E. Milan3, (1)University of Bergen, Department of Physics and Technology, Bergen, Norway(2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany(3)University of Leicester, Leicester, United Kingdom
OSPA Liaison:  Karl Laundal, University of Bergen, Department of Physics and Technology, Bergen, Norway

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

2407 Auroral ionosphere [IONOSPHERE]
2427 Ionosphere/atmosphere interactions [IONOSPHERE]
2431 Ionosphere/magnetosphere interactions [IONOSPHERE]
2784 Solar wind/magnetosphere interactions [MAGNETOSPHERIC PHYSICS]

Abstracts Submitted to this Session:

Causes of HF Backscatter Loss During Large Geomagnetic Storms: Comparisons between Northern and Southern Hemisphere SuperDARN Radars (78824)
Julie Louise Currie, RMIT Univeristy, SPACE Research Centre, Melbourne, VIC, Australia, Colin L Waters, University of Newcastle, Centre for Space Physics, New South Wales, Australia, Frederick W Menk, University of Newcastle, Callaghan, NSW, Australia and Murray D Sciffer, University of Newcastle, English Language and Foundation Studies Centre, Callaghan, Australia
Thermospheric Wind Effects on the Evolution of Dayside Ionospheric Total Electron Content (TEC) (61761)
Emma Claire Boyd, University of Michigan Ann Arbor, Ann Arbor, MI, United States and Shasha Zou, University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States
Simultaneous Two-Station Observation of Polar Cap Thermospheric Winds (65367)
Qian Wu, National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States and William E Ward, University of New Brunswick, Fredericton, NB, Canada
Inter-hemispheric asymmetry of Pedersen conductance (65667)
Yang Lu, University of Texas at Arlington, Arlington, TX, United States, Yue Deng, University of Texas at Arlington, Arlington, United States, Cheng Sheng, University of Texas at Arlington, Physics, Arlington, TX, United States and Xinan Yue, UCAR, Boulder, CO, United States
Principle Component Analysis of Birkeland Currents Determined by the Active Magnetosphere and Planetary Electrodynamics Response Experiment (66923)
Stephen E Milan, University of Leicester, Leicester, United Kingdom, Jennifer Alyson Carter, University of Leicester, Leicester, LE1, United Kingdom, Haje Korth, Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States and Brian J Anderson, Johns Hopkins University, Baltimore, MD, United States
Solar Wind - Ionosphere Coupling Times from the Dayside to the Nightside as Observed by AMPERE (66956)
Kristian Snekvik1, Paul Tenfjord2, Nikolai Ostgaard3, Karl Laundal3, Jone Peter Reistad2, Steve E. Milan4 and Stein Haaland5, (1)Birkeland Centre for Space Science, University of Bergen, Bergen, Norway, (2)University of Bergen, Birkeland Centre for Space Science, Bergen, Norway, (3)University of Bergen, Department of Physics and Technology, Bergen, Norway, (4)University of Leicester, Leicester, United Kingdom, (5)University of Bergen, Bergen, Norway
On the importance of magnetotail untwisting (72145)
Jone Peter Reistad1, Nikolai Ostgaard2, Paul Tenfjord1, Karl Laundal3, Kristian Snekvik1, Stein Haaland4, Stephen E Milan5, Kjellmar Oksavik1, Harald U Frey6 and Adrian Grocott7, (1)University of Bergen, Birkeland Centre for Space Science, Bergen, Norway, (2)University of Bergen, Department of Physics and Technology, Bergen, Norway, (3)University of Bergen, Department of Physics and Technology, Birkeland Centre for Space Science, Bergen, Norway, (4)University of Bergen, Bergen, Norway, (5)University of Leicester, Leicester, United Kingdom, (6)University of California, Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (7)Lancaster University, Physics Department, Lancaster, United Kingdom
Inter-hemispheric comparisons of the ground magnetic response to a solar wind transient: the role of ionospheric conductivity (73008)
Zhonghua Xu1, Michael Hartinger1, C. Robert Clauer1, Hyomin Kim2 and Yiqun Yu3, (1)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (2)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Edison, NJ, United States, (3)Beihang University, Beijing, China
Birkeland Current Effects on High-Latitude Ground Magnetic Field Perturbations (77315)
Karl Laundal1, Stein Haaland2, Nikolai Ostgaard1, Jone Peter Reistad3, Paul Tenfjord3, Kristian Snekvik3, Steve E. Milan4 and Jesper W Gjerloev5, (1)University of Bergen, Department of Physics and Technology, Bergen, Norway, (2)University of Bergen, Bergen, Norway, (3)University of Bergen, Birkeland Centre for Space Science, Bergen, Norway, (4)University of Leicester, Leicester, United Kingdom, (5)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States

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