Asymmetry in the interhemispheric planetary wave-tide link between the two hemispheres |
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| Authors: | X Xu AH Manson CE Meek T Chshyolkova JR Drummond DM Riggin CM Hall RE Hibbins M Tsutsumi |
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| Institution: | 1. Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, Canada;2. Physics and Atmospheric Science Department, University of Dalhousie, Halifax, Canada;3. Colorado Research Associates, Boulder, USA;4. Tromsø Geophysical Observatory, University of Tromsø, Tromsø, Norway;5. British Antarctic Survey, Cambridge, United Kingdom;6. National Institute for Polar Research, Tokyo, Japan;1. Leibniz-Institute of Atmospheric Physics e.V. at the Rostock University, 18225 Kühlungsborn, Germany;2. Department of Physics and Astronomy, Clemson University, Clemson, SC, USA;3. INPE, São José dos Campos, 12201-790 SP, Brazil;4. GATS Inc., Boulder, CO, USA;5. Max Planck Institute for Meteorology, Hamburg, Germany;1. Dipartimento di Fisica, Università di Roma “La Sapienza”, 00185 Rome, Italy;2. Istituto Nazionale di Geofisica e Vulcanologia, 00143 Rome, Italy;1. E. Kharadze Abastumani Astrophysical Observatory at Ilia State University, K. Cholokashvili Ave 3/5, Tbilisi 0162, Georgia;2. Center for Atmospheric and Space Sciences, Utah State University, Logan, UT 84322, USA;1. National Atmospheric Research Laboratory (NARL), Gadanki, India;2. Department of Physics, Sri Venkateswara University, Tirupati, India;3. B1, CEEBROS, 47/20, IIIrd Main Road, Chennai, India;1. Center for Atmospheric Science, Hampton University, United States;2. State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, China;3. Institute of Space Science, National Central University, Taiwan;4. High Altitude Observatory, National Center for Atmospheric Research, United States;5. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, United States;1. CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, China;2. Mengcheng National Geophysical Observatory, University of Science and Technology of China, China;3. Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, China;4. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China;5. Collaborative Innovation Center of Astronautical Science and Technology, Harbin, China;6. COSMIC Program Office, University Corporation for Atmospheric Research, Boulder, CO, USA;7. State Key Laboratory of SpaceWeather, Center for Space Sciences and Applied Research, Chinese Academy of Sciences, Beijing, China;8. National Key Laboratory of Electromagnetic Environment, China Research Institute of Radio wave Propagation, Qingdao, China |
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| Abstract: | This study assesses the relation between the year-to-year variability of the semidiurnal tides (SDT) observed at high latitudes of both hemispheres and the global stratospheric stationary planetary wave (SPW) with zonal wavenumber S=1 (SPW1) derived from the UKMO temperature data. No significant positive correlation can be identified between the interannual variability of the Northern Hemisphere (NH) SDT and the Southern Hemisphere (SH) SPW1 for austral late-winter months. In contrast, a good consistency is evident for the interannual variations between the SDT observed at Rothera (68°S, 68°W) and the Arctic SPW1 for NH mid-winter months. Since it has been observed that during austral summer the non-migrating SDT often plays a significant role at the latitude of Rothera, a physical link between the SH SDT and the NH SPW is suggested. This asymmetry in the interhemispheric link is also noted in a recent study. |
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