Amplitude of the usual cosmic ray diurnal and enhanced anisotropies: Implications for the observed magnitude, timing, and ranking of Forbush decreases

O Okike - The Astrophysical Journal, 2021 - iopscience.iop.org
Cosmic ray (CR) diurnal anisotropy and Forbush decreases (FDs), as well as the
relationship between them, have received considerable study. Several astrophysicists have …

Comparison between statistical properties of Forbush decreases caused by solar wind disturbances from coronal mass ejections and coronal holes

AA Melkumyan, AV Belov, MA Abunina… - Advances in Space …, 2019 - Elsevier
In this paper, we compare Forbush decreases associated with solar wind disturbances from
two types of solar sources: coronal mass ejections (sporadic Forbush decreases) and …

Cosmic ray− global lightning causality

O Okike, AE Umahi - Journal of Atmospheric and Solar-Terrestrial Physics, 2019 - Elsevier
Many atmospheric processes such as atmospheric ionization, cloudiness, temperature and
terrestrial lightning have been attributed to galactic cosmic rays (GCRs) hitting the Earth's …

The role of extreme geomagnetic storms in the Forbush decrease profile observed by neutron monitors

K Ghag, P Tari, A Raghav, Z Shaikh… - Journal of Atmospheric …, 2023 - Elsevier
The Forbush decrease (FD) and Geomagnetic storm (GS) are the two distinct space weather
events having common causing agents like interplanetary coronal mass ejection (ICME) or …

What determines the observational magnitudes of Forbush events on earth: a critique of the traditional manual method

O Okike - Monthly Notices of the Royal Astronomical Society, 2020 - academic.oup.com
Forbush decreases (FDs) seem to be the compass for researchers searching for Sun–Earth
weather relationships. Thus, a wide range of the solar-terrestrial literature is dominated by …

[PDF][PDF] Recurrent and sporadic Forbush decreases during solar cycles 23–24

AA Melkumyan, AV Belov, MA Abunina… - Solar-Terrestrial …, 2019 - researchgate.net
A comparison has been made between recurrent (associated with high-speed streams from
coronal holes) and sporadic (caused by interplanetary coronal mass ejections (ICMEs)) …

Testing the impact of coronal mass ejections on cosmic-ray intensity modulation with algorithm selected Forbush decreases

O Okike, OC Nwuzor, FC Odo, EU Iyida… - Monthly Notices of …, 2021 - academic.oup.com
The relationship between coronal mass ejections (CMEs) and Forbush decreases (FDs) has
been investigated in the past. But the selection of both solar events are difficult. Researchers …

The empirical implication of conducting a Chree analysis using data from isolated neutron monitors

O Okike, AE Umahi - Solar Physics, 2019 - Springer
The analysis method developed by Chree has received several critical reviews since its
introduction in geophysical studies (Chree in Philos. Trans. Roy. Soc. London, Ser. A …

Forbush decreases and geomagnetic storms during a highly disturbed solar and interplanetary period, 4–10 September 2017

B Badruddin, OPM Aslam, M Derouich, H Asiri… - Space …, 2019 - Wiley Online Library
Features and peculiarities of the cosmic ray intensity (CRI) and the geomagnetic activity,
along with several solar plasma and interplanetary magnetic field, during the period 4–10 …

The identification of a planar magnetic structure within the ICME shock sheath and its influence on galactic cosmic-ray flux

ZI Shaikh, AN Raghav, G Vichare… - The Astrophysical …, 2018 - iopscience.iop.org
A Forbush decrease is a sudden decrease in cosmic-ray intensity caused by transient
interplanetary disturbances. The substructure of an interplanetary counterpart of a coronal …