Stagnation area
From Glossary of Meteorology
stagnation area
- For air blowing toward an object such as the wall of a building, the point that marks the center of divergence of air along that wall as the streamlines split to flow around the building.
The stagnation area corresponds to a relative maximum of static pressure.
- During strongly statically stable conditions, the region just upstream of a mountain where the air is blocked by the mountain.
This blocked flow could also contain a cavity of reverse flow.
- An air pollution term for an anticyclonic region of subsidence and light winds that tends to trap pollutants near the ground where concentrations can become large.
