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Global Analysis of the Extended Decreases in Cosmic Rays Observed with Worldwide Networks of Neutron Monitors and Muon Detectors: Temporal Variation of the Rigidity Spectrum and Its Implication Astrophysical Journal, 2025 (Ref: 17375)
Authors:
Munakata K.Hayashi Y.Kozai M.Kato C.Miyashita N.Kataoka R.Kadokura A.Miyake S.Iwai K.Echer E.Dal Lago A.Rockenbach M.Schuch N.J.Bageston J.V.Braga C.R.Al Jassaar H.K.Sharma M.M.Duldig M.L.Humble J.E.Sabbah I.Evenson P.Kuwabara T.Kóta J.
Category 1: Peer-reviewed literature

This paper presents the global analysis of two extended decreases in the galactic cosmic-ray intensity observed by worldwide networks of ground-based detectors in 2012. This analysis is capable of separately deriving the cosmic-ray density (or omnidirectional intensity) and anisotropy…

Ground-based Observations of Temporal Variation of the Cosmic-Ray Spectrum during Forbush Decreases The Astrophysical Journal Letters, 2025 (Ref: 17354)
Authors:
Mitthumsiri W.Ruffolo D.Munakata K.Kozai M.Hayashi Y.Kato C.Muangha P.Sáiz A.Evensor P.Mangeard P.-S. Clem J.Seunarine S.Nuntiyakul W.Miyashita N.Kataoka R.Kadokura A.Miyake S.Iwai K.Menjo H.Echer E.Dal Lago A.Rockenbach M.Schuch N.J.Bageston J.V.Braga C.R.Al Jassar H.K.Sharma M.M.Burahmah N.Zaman F.Duldig M.L.Sabbah I.Kuwabara T.
Category 1: Peer-reviewed literature

Observations of temporary Forbush decreases (FDs) in the Galactic cosmic-ray (GCR) flux due to the passage of solar storms are useful for space-weather studies and alerts. Here…

Analysis of Cosmic Rays' Atmospheric Effects and Their Relationships to Cutoff Rigidity and Zenith Angle Using Global Muon Detector Network Data Journal of Geophysical Research - Space Physics, 2019 (Ref: 16881)
Authors:
Mendonca R.R.S.Wang C.Braga C.R.Echer E.Dal Lago A.Costa J.E.R.Munakata K.Li H.Liu Z.Raulin J.-P Kuwabara T.Kozai M.Kato C.Rockenbach M.Schuch N.J.Al Jassar H.K.Sharma M.M.Tokumaru M.Duldig M.L.Humble J.E.Evenson P.Sabbah I.
Category 1: Peer-reviewed literature

Cosmic rays are charged particles whose flux observed at Earth shows temporal variations related to space weather phenomena and may be an important tool to study them. The cosmic ray intensity recorded with ground-based detectors also shows temporal variations arising from atmospheric variations.

First observed coronal mass ejection from the Middle East using cosmic rays. Kuwait Journal of Science and Engineering, 2010 (Ref: 14333)
Authors:
Sabbah I.Tokumaru M.Duldig M.L.Schuch N.J.
Category 1: Peer-reviewed literature

Observations of Forbush Decrease Precursors on 14 December 2006. 19th Australian Institute of Physics Congress, 5-9 December 2010, 2010 (Ref: 14284)
Authors:
Fushishita A.Kuwabara T.Kato C.Yasue S.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.Al Jassar H.K.Sharma M.M.Munakata K.
Category 3: Abstract

Global Muon Detector Network – GMDN and the Space Situational Awareness Conference Abstracts, Cospar 2010, 38th Scientific Assembly, 18-25 July 2010, Bremen, Germany, Paper, 2010 (Ref: 14192)
Authors:
Schuch N.J.Munakata K.Dal Lago A.Echer E.Gonzalez W.D.Da Silva M.R.Rigozo N.R.Petry A.Pinheiro D.K.Braga C.R.Silveira M.V.D.Stekel T.R.C.Antunes C.E.Kemmerlich N.Kato C.Fushishita A.Fujii Z.Bieber J.Evenson P.Kuwubara T.Duldig M.L.Humble J.E.Chilingarian A.Sabbah I.Jansen F.
Category 3: Abstract

Space weather forecasting is a very important tool for the space situational awareness to the space objects, the space environment and related threats and risks for manned and non-manned spacecrafts. The global network of ground based multi-directional detectors (GMDN)…

Global Muon Detector Network Observing Geomagnetic Storm's Precursor since March 2001 Conference Abstracts, Cospar 2010, 38th Scientific Assembly, 18-25 July 2010, Bremen, Germany, Paper, 2010 (Ref: 14191)
Authors:
Da Silva M.R.Dal Lago A.Gonzalez W.D.Munakata K.Fushishita A.Kuwubara T.Bieber J.Schuch N.J.Duldig M.L.Humble J.E.Sabbah I.
Category 3: Abstract

We use complementary observations from the prototype Global Muon Detector Network (GMDN) and the Advanced Composition Explorer satellite to identify precursors of geomagnetic storm events. The GMDN was completed in March 2006 with the installation of the Kuwait detector…

Observation of Forbush Decrease Precursors on 2006 December 14 with the Global Muon Detector Network Astronomical Society of Australia Annual Science Meeting 2010, Hobart, 5-8 July, 2010 (Ref: 14165)
Authors:
Duldig M.Fushishita A.Kuwabara T.Kato C.Yasue S.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Humble J.E.Sabbah I.Al Jassar H.K.Sharma M.M.Munakata K.
Category 3: Abstract

We analyse the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 December 14. An intense geomagnetic storm was also recorded during this FD with the peak Kp index of 8+.

Drift Effects and the Average Features of Cosmic Ray Density Gradient in CIRS During Successive Two Solar Minimum Periods Advances in Geosciences, Vol 21: Solar Terrestrial (ST), 2010 (Ref: 14151)
Authors:
Fushishita A.Narumi T.Kato C.Yasue S.Munakata K.Okazaki Y.Kuwabara T.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.Kóta J.
Category 1: Peer-reviewed literature

Global Muon Detector Network Observing Geomagnetic Storm’s Precursor Since March 2001 Proceedings of the 31st International Cosmic Ray Conference, Lodz, Poland, 2009 (Ref: 14080)
Authors:
Da Silva M.R.Dal Lago A.Gonzalez W.D.Munakata K.Fushishita A.Kuwabara T.Bieber J.Schuch N.J.Duldig M.L.Humble J.E.Sabbah I.
Category 3: Conference paper

We use complementary observations … from the prototype Global Muon Detector Network … (GMDN) and the Advanced Composition Explorer … satellite to identify precursors of geomagnetic storm … events. The GMDN was completed in March 2006 … with the installation of the Kuwait detector…

Precursors of the forbush decrease on December 14, 2006 observed with the Global Muon Detector Network (GMDN) Proceedings of the 31st International Cosmic Ray Conference, Lodz, Poland, 2009 (Ref: 14079)
Authors:
Fushishita A.Munakata K.Miyasaka E.Kato C.Yasue S.Kuwabara T.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.
Category 3: Conference paper

We analyze the precursory anisotropy … of a Forbush decrease observed with the multidirectional … muon detector at S˜ao Martinho in Brazil … on December 14, 2006. By subtracting contribution … from the diurnal anisotropy precisely determined by … the GlobalMuon Detector Network (GMDN)…

Precursors of the Forbush decrease on 2006 December 14 observed with the Global Muon Detector Network (GMDN) The Astrophysical Journal, 2010 (Ref: 14066)
Authors:
Fushishita A.Kuwabara T.Kato C.Yasue S.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.Al Jassar H.K.Sharma M.M.Munakata K.
Category 1: Peer-reviewed literature

We analyze the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 … December 14. An intense geomagnetic storm is also recorded during this FD with the peak Kp index of 8+.

First geomagnetic storm ever observed from the Middle East using cosmic rays Proceedings of the 21st European Cosmic Ray Symposium, Kosice, Slovakia, 9-12 September 2008, 2008 (Ref: 13836)
Authors:
Sabbah I.Munakata K.Duldig M.L.Fushishita A.Kato C.Yasue S.Kuwabara T.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Fujii Z.Humble J.E.
Category 3: Conference paper

The Global Muon Detector Network (GMDN) was … completed by installing a multi-directional cosmic-ray muon … hodoscope in Kuwait University in March 2006. The GMDN is … currently consisting of four multi-directional muon detectors … located at Nagoya (Japan), Hobart (Australia), Sao Martinho …

Determination of interplanetary coronal mass ejection geometry and orientation from ground-based observations of galactic cosmic rays Journal of Geophysical Research, 2009 (Ref: 13794)
Authors:
Kuwabara T.Bieber J.W.Evenson P.Munakata K.Yasue S.Kato C.Fushishita A.Tokumaru M.Duldig M.L.Humble J.E.Silva M.R.Dal Lago A.Schuch N.J.
Category 1: Peer-reviewed literature

We have developed a method for determining interplanetary coronal mass ejection … (ICME) geometry from galactic cosmic ray data recorded by the ground-based muon … detector network. The cosmic ray density depression inside the ICME, which is associated … with a Forbush decrease…

Space weather forecasting -a multi directional telescope for detection of high energy cosmic rays - muons - Southern Space Observatory - Brazil 37th COSPAR Scientific Assembly, Montreal, Canada, 13-20 July 2008, 2008 (Ref: 13454)
Authors:
Schuch N.J.Dal Lago A.Echer E.Munakata K.Bieber J.W.Da Silva M.Duldig M.L.Evenson P.Fujii Z.Gonzalez Alarcon W.D.Kato C.Kemmerich N.Kummer F.D.Kuwabara T.Sabbah I.Silveira M.V.D.Stekel T.R.C.Braga C.R.Chilingarian A.Hippler R.Humble J.E.
Category 3: Conference paper

A multi-directional telescope for detection of high-energy galactic cosmic rays (GCRs) - muons … was installed in 2001, through an international cooperation between Brazil, Japan and USA, and … operated since then at the Southern Space Observatory - SSO/CRS/INPE - MCT, (29S, 53W)…

Drift effects and the cosmic ray density gradient in a solar rotation period: first observation with the Global Muon Detector Network (GMDN) The Astrophysical Journal, 2008 (Ref: 13404)
Authors:
Okazaki Y.Fushishita A.Narumi T.Kato C.Yasue S.Kuwabara T.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Fujii Z.Duldig M.L.Humble J.E.Sabbah I.Kota J.Munakata K.
Category 1: Peer-reviewed literature

We present for the first time hourly variations of the spatial density gradient of 50 GeV cosmic rays within a sample … solar rotation period in 2006. By inversely solving the diffusive flux equation, including the drift…

Latitudinal distribution of galactic cosmic ray density and its effect on the CIR-driven modulations of density and density gradient measured by the Muon detector network Proceedings of the 30th International Cosmic Ray conference, Mérida, Mexico, 2007 (Ref: 13188)
Authors:
Okazaki Y.Munakata K.Fukunishi H.Fukushita A.Narumi T.Chiba T.Yasue S.Kato C.Kuwabara T.Bieber J.W.Evelson P.Duldig M.L.Humble J.E.Schuch N.J.Silva M.R.Lago A.D.Sabbah I.
Category 3: Abstract

We investigated the unidirectional fractional density gradient in GSE-z (GzU) of Galactic Cosmic Ray (GCR) by using the data obtained by the Muon detector network. The analysis period is from 1994 to 2005. We found that the yearly averaged GzU show temporal variations.

First spaceweather observations at MuSTAnG - the Muon Spaceweather Telescope for Anisotropies at Greifswald Proceedings of the 30th International Cosmic Ray conference, Mérida, Mexico, 2007 (Ref: 13187)
Authors:
Hippler R.Mengel A.Jansen F.Bartling G.Göhler W.Kudela K.Munakata K.Yasue S.Kato C.Duldig M.L.Bieber J.W.Evenson P.Schuch N.J.Dal Lago A.Silva M.R.Sabbah I.
Category 3: Abstract

First results of the Muon Spaceweather Telescope for Anisotropies at Greifswald (MuSTAnG) that is dedicated to spaceweather forecasting are reported.

Determination of ICME geometry and orientation from ground based observations of galactic cosmic rays Proceedings of the 30th International Cosmic Ray Conference, Mérida, Mexico, 2007 (Ref: 13186)
Authors:
Kuwabara T.Bieber J.W.Evenson P.Munakata K.Yasue S.Kato C.Fujii Z.Duldig M.L.Humble J.E.Silva M.R.Trivedi N.B.Gonzalez W.D.Alisson L.Schuch N.J.
Category 3: Abstract

We have developed a method for determining ICME (Interplanetary coronal mass ejection) geometry from galactic cosmic ray data recorded by the ground-based muon detector network. The … cosmic ray density depression inside the ICME, which is the cause of a Forbush decrease…

Space weather diagnosis using cosmic rays: observation with a global network of cosmic ray muon detectors Proceedings of the 30th International Cosmic Ray conference, Mérida, Mexico, 2007 (Ref: 13191)
Authors:
Munakata K.Fushishita A.Narumi T.Chiba T.Yasue S.Kato C.Kuwabara T.Bieber J.W.Evenson P.Duldig M.L.Humble J.E.Schuch N.J.Silva M.R.Dal Lago A.Sabbah I.
Category 3: Abstract

The galactic cosmic ray (GCR) intensity often shows a dramatic variation responding to the arrival of interplanetary disturbances at the Earth. Aiming to observe such a variation with muon detectors…

An international integrated research program in South of Brazil for observations of solar-terrestrial interactions IUGG XXIV 2007, Perugia, Italy July 2-13, 2007, 2007 (Ref: 12999)
Authors:
Schuch N.J.
Category 3: Abstract

This overview describes an international scientific cooperation between Brazil, USA and Japan, for an … integrated research program developed in south of Brazil for observations of solar-terrestrial interactions … and geospace.

Space weather diagnosis using cosmic rays: observation with a global network of cosmic ray muon detectors 6th Annual International Astrophysics Conference, Hawaii, March 16-22, 2007, 2007 (Ref: 12866)
Authors:
Munakata K.Narumi T.Chiba T.Fushishita A.Yasue S.Kato C.Kuwabara T.Bieber J.W.Evenson P.Duldig M.Humble J.E.Schuch N.J.Silva M.R.Dal Lago A.Sabbah I.
Category 3: Poster

Real-time cosmic ray monitoring system for space weather. Space Weather, 2006 (Ref: 12662)
Authors:
Kuwabara T.Bieber J.Clem J.Evenson P.Pyle R.Munakata K.Yasue S.Kato C.Akahane S.Koyama M.Fujii Z.Duldig M.Humble J.E.Silva M.R.Trivedi N.B.Gonzalez W.D.Schuch N.J.
Category 1: Peer-reviewed literature

CME-geometry and cosmic-ray anisotropy observed by a prototype muon detector network. Advances in Space Research, 2005 (Ref: 12187)
Authors:
Munakata K.Kuwabara T.Bieber J.W.Evenson P.Pyle R.Yasue S.Kato C.Fujii Z.Duldig M.L.Humble J.E.Silva M.R.Trivedi N.B.Gonzalez W.D.Schuch N.J.
Category 1: Peer-reviewed literature

Geometry of Interplanetary CME Deduced from Cosmic Rays. American Geophysical Union, Fall Meeting 2004, 2004 (Ref: 11851)
Authors:
Kuwabara T.Munakata K.Yasue S.Kato C.Bieber J.Evenson P.Pyle R.Fujii Z.Tokumaru M.Kojima M.Marubashi K.Duldig M.Humble J.Silva M.Trivedi N.Gonzalez W.Schuch N.
Category 3: Abstract

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