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• Dynamics driven by convection
  • Long-lasting (years) deep-reaching downdrafts as part of global convection cells
  • Short-lived (weeks) small surface convection cells
• Convection excites pulsations that cause shocks
  • Complex, small-scale in the inner atmosphere
  • Larger, almost global in the outer atmosphere
• Shocks lift up the gas and cause inhomogeneities
  • Large gas-density fluctuations
  • Small temperature fluctuations
• Dust formation
  • Temperature determines the formation distance ("rather spherical")
  • Gas-density inhomogeneities → dust inhomogeneities
  • Corundum dust forms further in than forsterite dust
  • Corundum dust can impact the formation of forsterite dust