This team is formed to investigate the interhemispheric asymmetry in magnetosphere-ionosphere-thermosphere (MIT) coupling. Observational and modeling studies have shown the interhemispheric differences in MIT coupling, which are manifested in various signatures in geospace. The interhemispheric differences can be attributed to a number of natural circumstances and various external drivers that interfere with complex coupling processes of the MIT system and complicate their signatures significantly. The MIT coupling processes associated with the energy input from the heliospheric system and the resulting feedback from the geospace can be misestimated due to the asymmetry, which has been overlooked. The assumption that the north and south are mirrored does not address the discrepancy found in observations and modeling work. Interhemispheric studies have not been extensively conducted due to both observational and modeling challenges. The proposed group will address questions as to what type of interhemispheric asymmetry is present, how MIT coupling is affected by such asymmetry, how to incorporate interhemispheric differences and their effects on MIT coupling in observations and modeling/simulations, and how observation and modeling effort should be made to advance our knowledge in these topics. The team is composed of experts in interhemispheric MIT coupling studies from various institutes in various countries, many of whom operate high-latitude ground stations in both hemispheres providing critical infrastructure and/or have experiences with various near-Earth satellite data (e.g., Cluster, CHAMP, Swarm, Ampere, Polar, IMAGE, DMSP) and model simulations (e.g., TIE-GCM, GITM) for the proposed work. This proposal is timely as there are recent community efforts to increase interhemispheric observational capability and to form scientific focused groups/projects on this topic.