Macroviscosity

{
  "id": "MLC-T-MET-007079",
  "term": "Macroviscosity",
  "field": "Meteorology and atmospheric science",
  "definition": "The apparent viscosity of a fluid on a large scale, arising from the momentum transfer by turbulent eddies rather than by molecular diffusion. In the atmosphere, this property, also known as eddy viscosity, describes how large-scale motions are dissipated and how momentum is exchanged within the flow. The value of macroviscosity is not a constant property of the fluid but depends on the state of the flow, and it is typically several orders of magnitude greater than the molecular viscosity of air.",
  "see_also": [
    "Logarithmic velocity profile"
  ],
  "url": "https://mlchart.com/terminology/meteorology/macroviscosity/"
}