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Working Teams


In order to understand physical mechanisms of dynamic phenomena taking place in the complicated Sun-Earth system, the GEMSIS project has been carried out by three working teams (WTs):

  • The ‘GEMSIS-Sun’ WT implements the modeling of high-energy particle dynamics in solar flares,
  • The ‘GEMSIS-Magnetosphere’ WT implements new models of global variation in the inner magnetosphere,
  • The ‘GEMSIS-Ionosphere’ WT implements models of global distribution of the ionospheric electric potential.

GEMSIS-Sun

Numerical Modeling of Energetic Particles in Solar Flares
The working team ‘GEMSIS-Sun’ aims to reveal the particle acceleration, transport, and dissipation processes of energetic particles in solar flares through numerical modeling/simulation and analyses of various kinds of observational data.

GEMSIS-Magnetosphere

Geospace storms are the largest electromagnetic disturbance in near-Earth space and facilitate extensive particle acceleration in the inner magnetosphere, which causes development of the ring current and a drastic increase of relativistic electrons in the radiation belt. Aiming at understanding the dynamics of the inner magnetosphere during the storms, the GEMSIS-Magnetosphere working team has addressed the development of new physics-based models for the global dynamics of the ring current (GEMSIS-RC model) and radiation belt (GEMSIS-RB model) and integrated data analysis studies to compare the model results with various types of geospace observations from space and from the ground. Some results are applied to studying the space weather forecast. Other ongoing research includes concept design for an integrated data analysis tool and a related database for effective research with various types of data, including those obtained from satellite observations, ground-based observations, and numerical simulations/models.

GEMSIS-Ionosphere

Goal: To understand the solar wind-magnetosphere-ionosphere system.

Scientific Issues:

  • What is the structure of the storm-time electric potential in the ionosphere?
  • What is the flow of energy in the solar wind-magnetosphere-ionosphere system?
  • What is the role of the aurora in the solar wind-magnetosphere-ionosphere system?
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