Climate & Space Research Fellow Yining Shi will give a lecture as part of the CLASP Seminar Series. Please join us!

Ms. Shi's presentation is titled "Interhemispheric Asymmetries in Magnetosphere and Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models" and will take place on Thursday, October 28 at 3:30 p.m. EDT.

This seminar will be in person at the Climate and Space Research Building Auditorium, Room 2246.

The seminar may also be viewed via Zoom.
Please contact lhopkins@umich to request zoom access.

ABSTRACT:
The Earth geomagnetic field is the magnetic field surrounding Earth that consists of two major parts. The Earth internal magnetic field is generated by the Earth’s core and crust and is close to a dipole with a tilt and offset. In addition to the internal field, Earth’s magnetic field is also affected by external sources from the interaction with the solar wind. The Earth’s magnetic field is an essential part of space weather and magnetosphere-ionosphere studies. Throughout the years, efforts have been made to measure the Earth’s magnetic field as well as model it for better understanding of the internal field and the magnetic field changes due to solar wind conditions.
In this talk, we present a statistical study of magnetic field vector residual between space-based measurements made by the low earth orbit (LEO) satellite constellation Swarm and two Earth magnetic field models: the 12th generation International Geomagnetic Reference Field (IGRF) model and the CHAOS-6 model. We show the global comparison between observations and models where interhemispheric asymmetries are found in the magnetic field vector residuals.