Ilpo Virtanen
Oulun yliopisto
H-index: 12
Europe-Finland
Top articles of Ilpo Virtanen
Reconstructing solar magnetic fields from historical observations-IX. The photospheric magnetic field from 1915 to 1985
Astronomy & Astrophysics
2022/11/1
Clarifying the relation between chromospheric emissions and photospheric magnetic fields using AIA 1600 Å and HMI data
EGU General Assembly Conference Abstracts
2022/5
Ilpo Virtanen
H-Index: 10
Kalevi Mursula
H-Index: 27
On a limitation of Zeeman polarimetry and imperfect instrumentation in representing solar magnetic fields with weaker polarization signal
Journal of space weather and space climate
2021
Spatial–temporal evolution of photospheric weak-field shifts in solar cycles 21–24
Astronomy & Astrophysics
2021/1/1
Abrupt shrinking of solar corona in the late 1990s
The Astrophysical Journal Letters
2020/1/27
Effect of additional magnetograph observations from different Lagrangian points in Sun‐Earth system on predicted properties of quasi‐steady solar wind at 1 AU
Space Weather
2020/7
Axial dipole moments of solar active regions in cycles 21-24
EGU General Assembly Conference Abstracts
2020/5
Ilpo Virtanen
H-Index: 10
Kalevi Mursula
H-Index: 27
Abrupt shrinking of solar corona in late 1990s and related changes in solar magnetic structure
2020/3/9
Kalevi Mursula
H-Index: 27
Ilpo Virtanen
H-Index: 10
