Karl M. Laundal

Researcher, Space Physics

E-mailkarl.laundal@uib.no
Phone+47 55 58 27 06
Visitor Address
Allégaten 55

5007 Bergen
Postal Address
Postboks 7803

5020 Bergen

Research
Publications

I am a researcher and group leader at the University in Bergen in Norway. I lead the group Dynamics of the Asymmetric Geospace at the Birkeland Centre for Space Science.

My group and I have worked for many years to understand the dynamics of the asymmetric geospace by investigating a wide range of observations and simulations. In recent years, as part of two projects funded by the Trond Mohn Foundation and by the Reserach Council of Norway, we have developed new techniques for combining data to map the electrodynamics in the ionosphere. We are also heavily involved in the Electrojet Zeeman Imaging Explorer, a NASA satellite mission, planned to launch in 2024, which will observe magnetic fields and electric currents in a new way.

Here are some links for more information about me and my research:

An article about my research at uib.no
Web page for the Dynamics of the Asymmetric Geospace group
Web page for the Trond Mohn Foundation project What Shapes Space
Code for the Local mapping of ionospheric electrodynamics (Lompe) technique on GitHub
Web interface and Python code for the AMPS model, an empirical model of ionospheric currents and magnetic fields developed with funding from ESA Swarm DISC
EZIE webpage

A complete list of my publications can be found at Google Scholar

Academic article

Show author(s) (2024). Occurrence Probability of Magnetic Field Disturbances Measured With Swarm: Mapping the Dynamic Magnetosphere-Ionosphere Coupling. Journal of Geophysical Research (JGR): Space Physics.
Show author(s) (2024). Calculating the High-Latitude Ionospheric Electrodynamics Using a Machine Learning-Based Field-Aligned Current Model. Space Weather.

Show author(s) (2023). Substorm Impact on Dayside Ionospheric Currents. Geophysical Research Letters.
Show author(s) (2023). Statistical Temporal Variations in the Auroral Electrojet Estimated With Ground Magnetometers in Fennoscandia. Space Weather.
Show author(s) (2023). Spatial Resolution in Inverse Problems: The EZIE Satellite Mission. Journal of Geophysical Research (JGR): Space Physics.
Show author(s) (2023). Polar ionospheric currents and high temporal resolution geomagnetic field models. Geophysical Journal International. 1736-1760.
Show author(s) (2023). Background removal from global auroral images: Data-driven dayglow modeling. Earth and Planetary Physics (EPP). 247-257.
Show author(s) (2023). Auroral Oval Morphology: Dawn-Dusk Asymmetry Partially Induced by Earth's Rotation. Journal of Geophysical Research (JGR): Space Physics.

Show author(s) (2022). Transient high latitude geomagnetic response to rapid increases in solar wind dynamic pressure. Frontiers in Astronomy and Space Sciences.
Show author(s) (2022). The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field. Frontiers in Astronomy and Space Sciences.
Show author(s) (2022). The Lompe code: A Python toolbox for ionospheric data analysis. Frontiers in Astronomy and Space Sciences. 16 pages.
Show author(s) (2022). Testing the mirror symmetry of Birkeland and ionospheric currents with respect to magnetic latitude, dipole tilt angle, and IMF B <inf>y</inf>. Frontiers in Astronomy and Space Sciences.
Show author(s) (2022). Possible Ionospheric Influence on Substorm Onset Location. Geophysical Research Letters.
Show author(s) (2022). Local Mapping of Polar Ionospheric Electrodynamics. Journal of Geophysical Research (JGR): Space Physics. 31 pages.
Show author(s) (2022). Geomagnetic Response to Rapid Increases in Solar Wind Dynamic Pressure: Event Detection and Large Scale Response. Frontiers in Astronomy and Space Sciences. 1-18.
Show author(s) (2022). Evolution of IMF By induced asymmetries during substorms: Superposed epoch analysis at geosynchronous orbit. Frontiers in Astronomy and Space Sciences. 1-13.
Show author(s) (2022). A statistical study of polar cap flow channels observed in both hemispheres using SuperDARN radars. Journal of Space Weather and Space Climate. 15 pages.

Show author(s) (2021). Quantifying the Lobe Reconnection Rate During Dominant IMF By Periods and Different Dipole Tilt Orientations . Journal of Geophysical Research (JGR): Space Physics. 18 pages.
Show author(s) (2021). Exploring solar-terrestrial interactions via multiple imaging observers. Experimental astronomy (Print).
Show author(s) (2021). Evolution of IMF By Induced Asymmetries: The Role of Tail Reconnection. Journal of Geophysical Research (JGR): Space Physics.
Show author(s) (2021). Electrojet Estimates From Mesospheric Magnetic Field Measurements. Journal of Geophysical Research (JGR): Space Physics. 16 pages.

Show author(s) (2020). Time-scale dependence of solar wind-based regression models of ionospheric electrodynamics. Scientific Reports.
Show author(s) (2020). The Relationship Between Cusp Region Ion Outflows and East‐West Magnetic Field Fluctuations at 4,000‐km Altitude. Journal of Geophysical Research (JGR): Space Physics.
Show author(s) (2020). Seasonal and Hemispheric Asymmetries of F Region Polar Cap Plasma Density: Swarm and CHAMP Observations. Journal of Geophysical Research (JGR): Space Physics. 13 pages.
Show author(s) (2020). An Explicit IMF B 𝑦 Dependence on Solar Wind-Magnetosphere Coupling. Geophysical Research Letters. 8 pages.

Show author(s) (2019). Separation and quantification of ionospheric convection sources: 2. The dipole tilt angle influence on reverse convection cells during northward IMF. Journal of Geophysical Research (JGR): Space Physics. 6182-6194.
Show author(s) (2019). Separation and quantification of ionospheric convection sources: 1. A new technique. Journal of Geophysical Research (JGR): Space Physics. 6343-6357.
Show author(s) (2019). Observations of asymmetric lobe convection for weak and strong tail activity. Journal of Geophysical Research (JGR): Space Physics. 9999-10017.
Show author(s) (2019). Magnetic Effects of Plasma Pressure Gradients in the Upper F Region. Geophysical Research Letters. 2355-2363.
Show author(s) (2019). IMF By Influence on Magnetospheric Convection in Earth's Magnetotail Plasma Sheet . Geophysical Research Letters. 11698-11708.

Show author(s) (2018). Timescales of dayside and nightside field-aligned current response to changes in solar wind-magnetosphere coupling. Journal of Geophysical Research (JGR): Space Physics. 7307-7319.
Show author(s) (2018). The asymmetric geospace as displayed during the geomagnetic storm on 17 August 2001. Annales Geophysicae. 1577-1596.
Show author(s) (2018). Solar Wind and Seasonal Influence on Ionospheric Currents From Swarm and CHAMP Measurements. Journal of Geophysical Research (JGR): Space Physics. 4402-4429.
Show author(s) (2018). Snakes on a spaceship—An overview of Python in heliophysics. Journal of Geophysical Research (JGR): Space Physics. 10,384-10,402.
Show author(s) (2018). Seasonal and solar cycle variations of thermally excited 630.0 nm emissions in the polar ionosphere. Journal of Geophysical Research (JGR): Space Physics. 7029-7039.
Show author(s) (2018). Observations of asymmetries in ionospheric return flow during different levels of geomagnetic activity. Journal of Geophysical Research (JGR): Space Physics. 4638-4651.
Show author(s) (2018). Interplanetary Magnetic Field Bx Component Influence on Horizontal and Field-Aligned Currents in the Ionosphere. Journal of Geophysical Research (JGR): Space Physics. 3360-3379.
Show author(s) (2018). How the IMF By Induces a Local By Component During Northward IMF Bz and Characteristic Timescales. Journal of Geophysical Research (JGR): Space Physics. 3333-3348.
Show author(s) (2018). Evolution of Asymmetrically Displaced Footpoints During Substorms. Journal of Geophysical Research (JGR): Space Physics. 10,030-10,063.

Show author(s) (2017). Overview of solar wind - magnetosphere - ionosphere - atmosphere coupling and the generation of magnetospheric currents. Space Science Reviews. 547-573.
Show author(s) (2017). North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations. Journal of Geophysical Research (JGR): Space Physics. 136-149.
Show author(s) (2017). Magnetic field perturbations from currents in the dark polar regions during quiet geomagnetic conditions. Space Science Reviews. 281-297.
Show author(s) (2017). Dayside and nightside magnetic field responses at 780 km altitude to dayside reconnection. Journal of Geophysical Research (JGR): Space Physics. 1670-1689.

Show author(s) (2016). The impact of sunlight on high-latitude equivalent currents. Journal of Geophysical Research (JGR): Space Physics. 2715-2726.
Show author(s) (2016). Sunlight effects on the 3D polar current system determined from low Earth orbit measurements. Earth Planets and Space.
Show author(s) (2016). Mechanisms that Produce Auroral Asymmetries in Conjugate Hemispheres. Geophysical Monograph Series.
Show author(s) (2016). Magnetospheric response and reconfiguration times following IMF By reversals. Journal of Geophysical Research (JGR): Space Physics. 417-431.
Show author(s) (2016). Magnetic coordinate systems. Space Science Reviews. 1-33.
Show author(s) (2016). Dynamic effects of restoring footpoint symmetry on closed magnetic field lines. Journal of Geophysical Research (JGR): Space Physics. 3963-3977.

Show author(s) (2015). How the IMF By induces a By component in the closed magnetosphere and how it leads to asymmetric currents and convection patternsin the two hemispheres. Journal of Geophysical Research (JGR): Space Physics. 9368-9384.
Show author(s) (2015). Birkeland current effects on high-latitude ground magnetic field perturbations. Geophysical Research Letters. 7248-7254.

Show author(s) (2014). What is the appropriate coordinate system for magnetometer data when analyzing ionospheric currents? Journal of Geophysical Research (JGR): Space Physics. 8637-8647.
Show author(s) (2014). Intensity asymmetries in the dusk sector of the poleward auroral oval due to IMF Bx. Journal of Geophysical Research (JGR): Space Physics. 9497-9507.

Show author(s) (2013). On the non-conjugacy of nightside aurora and their generator mechanisms. Journal of Geophysical Research (JGR): Space Physics. 3394-3406.
Show author(s) (2013). Coincident particle and optical observations of nightside subauroral proton precipitation. Journal of Geophysical Research (JGR): Space Physics. 1112-1122.

Show author(s) (2012). Correction to 'Interhemispherical asymmetry of substorm onset locations and the Interplanetary Magnetic Field.'. Geophysical Research Letters.
Show author(s) (2012). Changes in the magnetotail configuration before near-Earth reconnection. Journal of Geophysical Research (JGR): Space Physics. 12 pages.

Show author(s) (2011). Interhemispherical asymmetry of substorm onset locations and the interplanetary magnetic field. Geophysical Research Letters. 5 pages.
Show author(s) (2011). Evolution of auroral asymmetries in the conjugate hemispheres during two substorms. Geophysical Research Letters. 6 pages.
Show author(s) (2011). 3-D laser scanner system based on a galvanometer scan head for high temperature applications. Proceedings of SPIE, the International Society for Optical Engineering. 9 pages.

Show author(s) (2010). Seasonal and interplanetary magnetic field-dependent polar cap contraction during substorm expansion phase. Journal of Geophysical Research (JGR): Space Physics. A11224.
Show author(s) (2010). Interhemispheric observations of emerging polar cap asymmetries. Journal of Geophysical Research (JGR): Space Physics. 15 pages.

Show author(s) (2009). Asymmetric auroral intensities in the Earth's Northern and Southern hemispheres. Nature. 491-493.

Show author(s) (2008). Persistent global proton aurora caused by high solar wind dynamic pressure. Journal of Geophysical Research (JGR). 8 pages.

More information in national current research information system (CRIStin)

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