Geomagnetic and sunspot activity associations and ionospheric effects of lightning phenomena at Trivandrum near dip equator |
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| Institution: | 1. University of Sheffield, Sheffield S1 3JD, UK;2. Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;3. Hokkaido University, 060-0810 Sapporo, Japan;4. National Cheng-Kung University, Taiwan City 701, Taiwan;5. Kyoto University, Uji, Kyoto 611-0011, Japan;1. IP&D, University of Vale do Paraíba, São José dos Campos, Brazil;2. ReSoLVE Center of Excellence, Department of Physics, University of Oulu, Finland;3. Sodankylä Geophysical Observatory, University of Oulu, Finland;4. DGE, National Institute for Space Research, São José dos Campos, Brazil;5. LARAMG, University of Rio de Janeiro State, Rio de Janeiro, Brazil;1. Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;2. Department of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon, Chumphon 86160, Thailand;3. Space Environment Laboratory, National Institute of Information and Communications Technology, Nukuikita, Koganei, Tokyo 184-8795, Japan;1. Space Science Institute, Boulder, CO, USA;2. CSSE, University of Michigan, Ann Arbor, MI, USA;1. Department of Chemistry, The Pennsylvania State University, University Park, PA, 16802, United States;2. CIRES & Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, 80309, United States |
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| Abstract: | From a study of thunder/lightning observations in Trivandrum (near dip equator) for selected years between 1853 and 2005, we could find an inverse relation of the same with sunspot activity and associations with enhancements in diurnal range of local geomagnetic declination. The results seem to suggest lightning-associated modulation of E-region dynamo currents in the equatorial ionosphere and the thunderstorm activity near dip equator probably acts as a moderator to regulate electric potential gradient changes in the global electric circuit due to solar activity changes. |
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