Follow
Lauri Holappa
Lauri Holappa
Verified email at oulu.fi - Homepage
Title
Cited by
Cited by
Year
Correct normalization of the Dst index
K Mursula, L Holappa, A Karinen
Astrophysics and Space Sciences Transactions 4 (2), 41-45, 2008
542008
Annual fractions of high‐speed streams from principal component analysis of local geomagnetic activity
L Holappa, K Mursula, T Asikainen, IG Richardson
Journal of Geophysical Research: Space Physics 119 (6), 4544-4555, 2014
462014
Occurrence of high-speed solar wind streams over the Grand Modern Maximum
K Mursula, R Lukianova, L Holappa
The Astrophysical Journal, 2015
392015
A new method to estimate annual solar wind parameters and contributions of different solar wind structures to geomagnetic activity
L Holappa, K Mursula, T Asikainen
Journal of Geophysical Research: Space Physics 119 (12), 9407-9418, 2014
332014
Explicit IMF By Dependence in High‐Latitude Geomagnetic Activity
L Holappa, K Mursula
Journal of Geophysical Research: Space Physics 123 (6), 4728-4740, 2018
282018
Average properties of geomagnetic storms in 1932–2009
OS Yakovchouk, K Mursula, L Holappa, IS Veselovsky, A Karinen
Journal of Geophysical Research: Space Physics 117 (A3), 2012
282012
Ring current development during high speed streams
VK Jordanova, H Matsui, PA Puhl-Quinn, MF Thomsen, K Mursula, ...
Journal of atmospheric and solar-terrestrial physics 71 (10-11), 1093-1102, 2009
282009
Seasonal solar wind speeds for the last 100 years: Unique coronal hole structures during the peak and demise of the Grand Modern Maximum
K Mursula, L Holappa, R Lukianova
Geophysical Research Letters 44 (1), 30-36, 2017
242017
Explicit IMF dependence in geomagnetic activity: Modulation of precipitating electrons
L Holappa, T Asikainen, K Mursula
Geophysical Research Letters 47 (4), e2019GL086676, 2020
222020
Explicit IMF By‐Dependence in Geomagnetic Activity: Quantifying Ionospheric Electrodynamics
L Holappa, RM Robinson, A Pulkkinen, T Asikainen, K Mursula
Journal of Geophysical Research: Space Physics 126 (4), e2021JA029202, 2021
182021
Uneven weighting of stations in the Dst index
K Mursula, L Holappa, A Karinen
Journal of atmospheric and solar-terrestrial physics 73 (2-3), 316-322, 2011
142011
Centennial evolution of monthly solar wind speeds: Fastest monthly solar wind speeds from long‐duration coronal holes
R Lukianova, L Holappa, K Mursula
Journal of Geophysical Research: Space Physics 122 (3), 2740-2747, 2017
102017
Magnetic storms during the space age: Occurrence and relation to varying solar activity
K Mursula, T Qvick, L Holappa, T Asikainen
Journal of Geophysical Research: Space Physics 127 (12), e2022JA030830, 2022
92022
Explicit IMF By‐Effect Maximizes at Subauroral Latitudes (Dedicated to the Memory of Eigil Friis‐Christensen)
L Holappa, N Gopalswamy, K Mursula
Journal of Geophysical Research: Space Physics 124 (4), 2854-2863, 2019
82019
Explicit IMF By‐Dependence of Energetic Protons and the Ring Current
L Holappa, NY Buzulukova
Geophysical Research Letters 49 (8), e2022GL098031, 2022
52022
Dependence of the global dayside reconnection rate on interplanetary magnetic field By and the earth’s dipole tilt
JP Reistad, L Holappa, A Ohma, C Gabrielse, D Sur, T Asikainen, ...
Frontiers in Astronomy and Space Sciences 9, 973276, 2022
42022
Toward more reliable long‐term indices of geomagnetic activity: Correcting a new inhomogeneity problem in early geomagnetic data
L Holappa, K Mursula
Journal of Geophysical Research: Space Physics 120 (10), 8288-8297, 2015
32015
Comment on “Unraveling the Role of IMF Bx in Driving Geomagnetic Activity” by Kubyshkina et al
L Holappa, JP Reistad, A Ohma
Journal of Geophysical Research: Space Physics 128 (10), e2023JA031701, 2023
22023
A Combined effect of the Earth's magnetic dipole tilt and IMF By in controlling auroral electron precipitation
JA Laitinen, L Holappa, H Vanhamäki
Authorea Preprints, 2023
22023
Solar wind–Magnetosphere interactions
S Wing, JE Borovsky, L Holappa, O Khabarova
Frontiers in Astronomy and Space Sciences 10, 1158971, 2023
22023
The system can't perform the operation now. Try again later.
Articles 1–20