Some Challenges of Geomagnetism Addressed with the Use of Ground and Satellite Observations

—Continuous growth of geomagnetic observations requires adequate methods for their processing and analysis. However, many studies in the field of geomagnetism require accurate and reliable measurements performed on the ground and in outer space. Mathematical methods of geoinformatics can provide a solution to these problems. The article describes the progress made in the field of intellectual analysis of geomagnetic data continuously recorded by magnetic observatories and low-orbit satellites, demonstrates the results in the study of rapid variations of the Earth’s core magnetic field associated with the deep processes of the Earth, and presents the investigation of near-Earth electromagnetic dynamics. The applied value of the obtained results is shown.