Free-surface conditions

{
  "id": "MLC-T-MET-005764",
  "term": "Free-surface conditions",
  "field": "Meteorology and atmospheric science",
  "definition": "A set of boundary conditions applied in fluid dynamics models at the interface between a liquid and a gas, such as the ocean and the atmosphere. The primary condition is that the pressure at the surface is constant and equal to the atmospheric pressure acting upon it. A second condition specifies the shear stress at the surface, which is often assumed to be zero for calm conditions or determined by wind forcing.",
  "url": "https://mlchart.com/terminology/meteorology/free-surface-conditions/"
}