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Abstract

Summary

Geomagnetic observatories placed all over the globe determine some parameters which show the geomagnetic activity as a signature of the response of the Earth magnetosphere and ionosphere to solar forcing. Indices might be local, which are calculated from data of a single geomagnetic observatory, or planetary, which characterize the planetary disturbances of the geomagnetic field as a whole. We use the (local) K-index which is a 3-hour quasilogarithmic scale developed to measure magnetic activity ranging from 0 to 9, with 0 indicating completely quiet conditions and 9, representing extreme magnetic activity. The Solar Cycle24 finished in December 2019 and started the Solar Cycle 25. There are prediction that SC25 will be similar in size to SC24 with a maximum expected to be in 2025. A different hypothesis is also published suggesting that SC25 could be among the strongest sunspot cycles ever observed. We examine the geomagnetic activity events during the first year of the new cycle. Our data show that 2020 had calm geomagnetic conditions. Only 12 days have reached the levels of a minor storm in the records of PAG observatory. Two autumn periods are chosen to display the local geomagnetic response of the observed solar impacts.

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/content/papers/10.3997/2214-4609.202149BGS20
2021-10-10
2024-04-20

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References

  1. Clette, F., Cliver, E.W., Lefèvre, L., Svalgaard, L., Vaquero, J.M.
    [2015], Revision of the sunspot number(s). Space Weather13(9), 529
     [Google Scholar]
  2. Matzka, J., Bronkalla, O., Tornow, K., Elger, K., Stolle, C.
    [2021a] Geomagnetic Kp index. V. 1.0. GFZ Data Services. https://doi.org/10.5880/Kp.0001
     https://doi.org/10.5880/Kp.0001 [Google Scholar]
  3. Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O., & Morschhauser, A.
    [2021b]. The geomagnetic Kp index and derived indices of geomagnetic activity. Space Weather, 19, e2020SW002641. https://doi.org/10.1029/2020SW002641
     https://doi.org/10.1029/2020SW002641 [Google Scholar]
  4. McIntosh, S.W., Chapman, S., Leamon, R.J. et al.
    [2020] Overlapping Magnetic Activity Cycles and the Sunspot Number: Forecasting Sunspot Cycle 25 Amplitude. Sol Phys295, 163. https://doi.org/10.1007/s11207‑020‑01723‑y
     https://doi.org/10.1007/s11207-020-01723-y [Google Scholar]
  5. Metodiev, M., and Trifonova, P.
    [2019]. Annual report of the observed geomagnetic activity in Panagjurishte observatory for 2014. Bulgarian Geophysical Journal, Vol. 42, p. 62–76. https://doi.org/10.34975/BGJ‑2019.42.6
     https://doi.org/10.34975/BGJ-2019.42.6 [Google Scholar]
  6. Metodiev, M.
    [2021] Local geomagnetic activity recorded on the Bulgarian territory for the Solar Cycle 24. International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, 2021, Bulgaria
     [Google Scholar]
  7. Schwabe, H.
    , “Sonnen beobachtungen im Jahre 1843” [1843] Astronomische Nachrichten (in German). 21: 233–236.
     [Google Scholar]
  8. https://www.swpc.noaa.gov/Space Weather Prediction Center, National Oceanic and Atmospheric Administration.
  9. https://www.stce.be/Solar Terrestrial center of Excellence, Royal Observatory of Belgium.
     [Google Scholar]
  10. https://wwwbis.sidc.be/silso/ssngraphicsSunspot Index and Long-term Solar Observations, Royal Observatory of Belgium
     [Google Scholar]
  11. https://www.ngdc.noaa.govNOAA National Centers for Environmental Information (NCEI)
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202149BGS20
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Geomagnetic Events Recorded in PAG Observatory During the First Year of Solar Cycle 25
Conference Proceedings 2021, 1 (2021); https://doi.org/10.3997/2214-4609.202149BGS20
/content/papers/10.3997/2214-4609.202149BGS20
/content/papers/10.3997/2214-4609.202149BGS20
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