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Associations involving delays (particularly long delays) between certain weather parameters and geomagnetic activity

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Abstract

Four sunspot-minimum periods (1963–1966, 1971–1977, 1983–1987 and 1992–1997) have been examined for the results which are presented. Using several different weather parameters, tropospheric gravity waves, enhanced cold fronts and two rainfall data sets in Eastern Australia, associations at reasonably high levels of significance have been found with enhanced geomagnetic activity (EGA). Statistically this EGA involved either short delays of several days or long delays of about 20 days. The geomagnetic parameters used were (a) the AE index (b) the hourly H component for a number of stations and (c) the daily K p -sum value. The K p -sum analyses have shown that the EGA associated with the delays form part of four or five cycles of recurrent geomagnetic activity for 27-day periodicities. Furthermore statistically two recurrent cycles are found to exist concurrently, one apparently related to the short delays and the other to the long delays. Periodicities of 13.5 days are created because the two sets are displaced from each other by approximately this interval. A brief reference is made to the 13.5 periodicity known to exist for geomagnetic activity and the evidence in the literature for active regions on the sun to be displaced by 180 degrees of solar longitude.

References

  1. Bowman, G. G., Atmospheric pressure waves at Brisbane and their association with certain ionospheric and solar events, Proceedings of AGARD Conference No. 115, 15–1, 1972.

  2. Bowman, G. G., Associations between tropospheric gravity waves and enhanced geomagnetic over three sunspot-minimum periods, Indian J. of Radio Space Phys., 29, 1–8, 2000.

  3. Bowman, G. G. and I. K. Mortimer, Quantitative estimates of relationships between geomagnetic activity and equatorial spread-F as determined by TID occurrence levels, Earth Planets Space, 52, 451–458, 2000.

  4. Bowman, G. G. and K. L. Shrestha, Tropospheric atmospheric gravity waves and their relationship with geomagnetic activity, Indian J. Radio Space Phys., 27, 110–118, 1998.

  5. Bucha, V. and V. Bucha, Jr., Geomagnetic forcing of changes in climate and in the atmospheric circulation, J. Atmos. Solar-Terr. Phys., 60, 145–169, 1998.

  6. Croxton, F. E. and D. J. Cowden, Applied general statistics, 2nd ed., 749 pp., Pitman, London, 1955.

  7. Donnelly, R. F. and L. C. Puga, Thirteen-day periodicity and the center-to-limb dependence of UV, EUV, and X-ray emission of solar activity, Solar Physics, 130, 369–390, 1990.

  8. Duell, B. and G. Duell, The behavior of barometric pressure during and after solar invasions and solar ultraviolet invasions, Smithsonian Micell. Collections, 110(8), 1–34, 1948.

  9. Mursula, K. and B. Zieger, The 13.5 day periodicity in the Sun, solar wind, and geomagnetic activity: The last three solar cycles, J. Geophys. Res., 101, 27,077–27,090, 1996.

  10. Pap, J., W. K. Tobiska, and S. D. Bouwer, Periodicities of solar irradiance and solar activity indices, I., Solar Physics, 129, 165–189, 1990.

  11. Roberts, W. O. and R. H. Olson, Geomagnetic storms and wintertime 300 mb trough development in the Pacific-North American area, J. Atmos. Sci., 30, 135–140, 1973.

  12. Svensmark, H. and E. Friis-Christensen, Variation of cosmic ray flux and global cloud coverage—a missing link in solar-climate relationships, J. Atmos. Solar-Terr. Phys., 59, 1225–1232, 1997.

  13. Taylor, J. R., M. Lester, and T. K. Yeoman, Seasonal variations in the occurrence of geomagnetic storms, Ann. Geophysicae, 14, 286–289, 1996.

  14. Tinsley, B. A., Solar wind modulation of the global electric circuit and apparent effects on cloud microphysics, latent heat release, and tropospheric dynamics, J. Geomag. Geoelectr., 48, 165–175, 1996.

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Correspondence to G. G. Bowman.

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Bowman, G.G., Mortimer, I.K. Associations involving delays (particularly long delays) between certain weather parameters and geomagnetic activity. Earth Planet Sp 53, 959–968 (2001) doi:10.1186/BF03351693

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Keywords

  • Geomagnetic Storm
  • Geomagnetic Activity
  • Cold Front
  • Weather Parameter
  • Rainfall Level