H. J. Opgenoorth

Understanding space weather to shield society: A global road map for 2015–2025 commissioned by COSPAR and ILWS

C. J. Schrijver, Kirsti Kauristie, A. D. Aylward et al. · Advances in Space Research · 2015 · 400 citations · Full text

Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents: Current systems associated with local auroral break-ups

W. Baumjohann, R.J. Pelunen, H. J. Opgenoorth et al. · Planetary and Space Science · 1981 · 251 citations

Geophysics, Joint Two-dimensional Observations, Engineering +6

EISCAT observations of topside ionospheric ion outflows during auroral activity: Revisited

Jan‐Erik Wahlund, H. J. Opgenoorth, Ingemar Häggström et al. · Journal of Geophysical Research Atmospheres · 1992 · 201 citations

Geophysics, Geospace Physics, Engineering +13

Three‐dimensional current flow and particle precipitation in a westward travelling surge (observed during the Barium‐Geos Rocket Experiment)

H. J. Opgenoorth, R. Pellinen, W. Baumjohann et al. · Journal of Geophysical Research Atmospheres · 1983 · 176 citations

Particle Precipitation, Engineering, Barium‐geos Rocket +19

Interplanetary coronal mass ejection observed at STEREO‐A, Mars, comet 67P/Churyumov‐Gerasimenko, Saturn, and New Horizons en route to Pluto: Comparison of its Forbush decreases at 1.4, 3.1, and 9.9 AU

Olivier Witasse, Beatriz Sánchez‐Cano, M. L. Mays et al. · Journal of Geophysical Research Space Physics · 2017 · 128 citations · Full text

Photometry, Engineering, Outer Planet +15