Detection of bidirectional streaming of galactic cosmic rays caused by coronal mass ejection

Abundance, chemical structure, and light absorption property of atmospheric organic aerosols in a forest in Hokkaido: Weak light absorption property of biogenic organic aerosol components

Successful observation of Earth’s atmospheric oscillation caused by Tonga undersea volcano eruption: Quickly catch information on meteorological tsunamis from ionospheric disturbances

Hygroscopicity of atmospheric aerosol particles transported from East Asian continent

Developing an insulation box with automatic temperature control for PM2.5 measurements in cold regions

Concentric ionospheric waves after the Tonga volcanic eruption based on GNSS observations

Diagnostics of coronal plasma at the current solar minimum using a cosmic lighthouse Coronal plasma density distribution at the current solar minimum has been determined by using giant radio pulses from the Crab pulsar (Solar Physics, 297:10, 2022)

Historical observations have revealed an overview of the great auroral displays in 1957 — 1958: Snapshots of the solar storms around the greatest maximum in the last four centuries