This study presents a European-wide analysis of the spatial and temporal distribution of the
cosmogenic isotope 7 Be in surface air. This is the first time that a long term database of 34 …

We have been continuously observing the daily 7Be concentrations in surface air at
Yamagata, Japan (38.25° N, 140.35° E) since 2000. The yearly profile of the 7Be …

Aims. We studied the 27-day variations of galactic cosmic rays (GCRs) based on neutron
monitor (NM), ACE/CRIS, STEREO, and SOHO/EPHIN measurements in the solar minima …

We study the relationship of the 27-day variations of the galactic cosmic ray intensity with
similar variations of the solar wind velocity and the interplanetary magnetic field based on …

We show that the higher range of the heliolongitudinal asymmetry of the solar wind speed in
the positive polarity period (A> 0) than in the negative polarity period (A< 0) is one of the …

The average amplitude of the 27-day variation of the galactic cosmic ray anisotropy
calculated based on the neutron monitors experimental data is larger in the qA> 0 period …

Context. Galactic cosmic ray (GCR) intensities around solar minimum times are modulated
by magnetic drifts that depend on the overall solar polarity. GCR intensities reach a higher …

Galactic cosmic rays (GCRs) that traverse the heliosphere, in the energy range from several
100 MeV to a few GeV, are subjected to heliospheric modulation. GCRs interact with varying …

We study temporal changes of the power law rigidity R spectrum δD (R) D (R)∝ R-γ of the
four (2–18 September 1996, 30 September–15 October 1996, 18 March–4 April 2002, and …

We study the temporal evolution of the power rigidity spectrum of the first (27days) and the
second (14days) harmonics of the 27-day variation of the galactic cosmic ray intensity …