The goals of the GeoDAWG2023 workshop are to identify common challenges in data assimilation applications to geospace systems faced by the GeoDAWG community, and to discuss collaborative strategies to tackle these challenges. The workshop will focus on some key questions typically faced by the participants:

• How to impose observational constraints by transferring information from observationally dense regions to sparse regions?
• How to mitigate unphysical increments that cause dynamical imbalance in the model?
• How to reduce the estimation problem dimension: benefits and limitations of reduced-state and parameter (driver) estimation?
• What are good means for validation, verification and measuring improvement?

The focus of the upcoming COLAGE in Monterrey will include the following scientific fields:

• Space Weather
• Ionospheric Research
• Neutral Atmosphere Dynamics
• Solar Physics
• Earth Magnetic Field, including Ground Magnetism
• Interplanetary Magnetic Field, including Magnetospheric Physics
• Non-Linear Processes Cosmic Rays

The Symposium will bring together solar and stellar physicists investigating the dynamics of convection zones and lower atmospheres. It will be dedicated to observational and theoretical aspects of the hydrodynamics and magnetohydrodynamics, both global and local, of the solar and stellar convection zones and lower atmospheres with the inclusion of numerical simulations as a particular branch of theoretical research. Specific subjects to be discussed are as follows:

• Convection (solar – on different scales – and stellar)
• Differential rotation and meridional circulation (both solar and stellar)
• Global dynamo (in the Sun and stars; solar-cycle observed patterns and predictions)
• Helioseismology and asteroseismology (both global and local; probing subsurface structure and dynamics)
• Local processes of magnetic-flux emergence, sunspot and starspot formation (observed patterns of sunspot evolution, small-scale motions, local dynamo)

Окончание приема рукописей: 1 декабря 2023 г. (https://infra-m.ru/uslugi/avtoru/competition_akademus/)