Results 61 to 70 of about 4,065 (195)

Structure of a Forbush decrease

, 1967
Bibliography: p. 107-110.
openaire   +2 more sources

Correlation Patterns of Muon Flux With Vertical Atmospheric Profiles: Insights From Monte Carlo Simulations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract The production, attenuation, and absorption of secondary cosmic rays (SCR) are influenced by atmospheric parameters such as air pressure and temperature. To reliably correlate SCR flux measurements with atmospheric ionization driven by energetic particle precipitation, these dependencies must be quantified.
A. Al‐Qaaod, V. Pierrard, A. Winant, U. Stolzenberg, I. Ambrozova, M. Sommer, J. Slegl, J. Solc, A. Gkikoudi, A. G. Georgakilas, A. Papayannis, F. S. Krasniqi   +11 more
wiley   +1 more source

Measurements of Forbush decreases at Mars: both by MSL on ground and by MAVEN in orbit

, 2017
The Radiation Assessment Detector (RAD), on board Mars Science Laboratory's (MSL) Curiosity rover, has been measuring ground level particle fluxes along with the radiation dose rate at the surface of Mars since August 2012. Similar to neutron monitors at
Boettcher, Stephan, Dunn, Patrick, Ehresmann, Bent, Guo, Jingnan, Halekas, Jasper, Hassler, Donald M., Larson, Davin, Lee, Christina O., Lillis, Robert, Lundt, Niklas, Papaioannou, Athanasios, Posner, Arik, Rahmati, Ali, Simonson, Patrick, Wimmer-Schweingruber, Robert F., Zeitlin, Cary   +15 more
core   +1 more source

Forbush-decreases in 19th solar cycle

Journal of Physics: Conference Series, 2013
The 19th solar cycle was characterized by abnormally high solar activity; unfortunately, the possibilities of observing it were limited. Ground-based observations of cosmic rays and geomagnetic activity are among the few types of continuous measurements that allow statements about the events of 19th cycle and their comparison with events of other ...
A Abunin, M Abunina, A Belov, E Eroshenko, V Oleneva, V Yanke   +5 more
openaire   +1 more source

Solar Flare Activity, 1937–2024: Introducing the New Hemispheric Solar Flare Index (hSFI) in the Context of 2024's Major Solar Storm Events

Space Weather, Volume 23, Issue 11, November 2025.
Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera, W. Soon, S. Knoška, A. Özgüç, G. Velasco Herrera, H. Yeşilyaprak, N. Babynets, M. Švanda, J. Muraközy, S. Qiu, D. Riveros‐Rosas, R. Connolly, M. Connolly, A. Tlatov, L. Cappellotto   +14 more
wiley   +1 more source

Reduced ERA‐I Forecasting Skill During Forbush Decreases

Geophysical Research Letters
Correlations between week‐long cosmic ray flux perturbations and terrestrial cloud cover have previously been identified. Still, uncertainty persists on whether the cloud response is due to a physical link involving cosmic rays or caused by random ...
Jacob Svensmark
doaj   +1 more source

Long-term Statistical Analysis of the Simultaneity of Forbush Decrease Events at Middle Latitudes [PDF]

Journal of Astronomy and Space Sciences, 2015
Forbush Decreases (FD) are transient, sudden reductions of cosmic ray (CR) intensity lasting a few days, to a week. Such events are observed globally using ground neutron monitors (NMs).
Seongsuk Lee, Suyeon Oh, Yu Yi, Paul Evenson, Geonhwa Jee, Hwajin Choi   +5 more
doaj   +1 more source

Correlation Between Radiation Enhancements at Aviation Altitudes and Energetic Precipitating Electrons

Space Weather, Volume 23, Issue 10, October 2025.
Abstract The campaign of Automated Radiation Measurements for Aerospace Safety (ARMAS) has revealed that relativistic electron precipitation (REP) from the radiation belts can significantly enhance the radiation environment at aviation altitudes, in addition to the well‐known sources of galactic cosmic rays and solar energetic particles. Recent studies
Wei Xu, Haotian Xu, Xudong Gu, Binbin Ni, Jingyuan Feng, Joshua Pettit, Hilde Nesse, W. Kent Tobiska, Wen Cheng, Wenchen Ma, Yudi Pan, Jacob Bortnik   +11 more
wiley   +1 more source

Interplanetary magnetic fields, their fluctuations, and cosmic ray variations [PDF]

The cause of Forbush decreases is examined using neutron monitor data and measurements of the interplanetary magnetic field. It is found that for the period examined (Dec.
Barouch, E., Sari, J. W.
core   +1 more source

Characterization of Regional Space Weather Conditions in Mexico During Solar Minimum 24/25: Baseline for Severity Scale Development

Space Weather, Volume 23, Issue 10, October 2025.
Abstract Using observations from the National Space Weather Laboratory's (LANCE acronym in Spanish) ground‐based network, we characterize regional space weather conditions in Mexico during the solar minimum 24/25 (2018–2020). Data analyzed include regional geomagnetic indices (the regional K index, Kmex, and Δ ${\Delta }$H), ionospheric Total Electron ...
J. A. Gonzalez‐Esparza, E. Sanchez‐Garcia, M. Sergeeva, P. Corona‐Romero, V. J. Gatica‐Acevedo, C. I. Castellanos, L. X. Gonzalez‐Mendez   +6 more
wiley   +1 more source