Large, roughly circular ocean currents are called gyres.
It is a roughly circular area with radius about 15 miles.
Conventional cells are the large circular patterns that travel in air.
i think these are winds
i think these are winds
i think these are winds
The circular building that gladitorial contests were held in is called the Coliseum.
Caldera.
Gyres
rose window
Air moves in large circular patterns called convection cells. A convection cell is most notable in the formation of clouds with its release and transportation of energy.
Jet streams are high-altitude, fast-flowing air currents that move in large circular patterns around the Earth. These narrow bands of wind can reach speeds exceeding 100 miles per hour and have a significant impact on global weather patterns.
A tropical lagoon is encircled by an atoll.