wind velocity gradient
11Thermal wind — The thermal wind is a vertical shear in the geostrophic wind caused by a horizontal temperature gradient. Its name is a misnomer, because the thermal wind is not actually a wind, but rather a wind gradient. Description Physical Intuition , so… …
12geostrophic wind — noun a) Meteorology. A wind whose direction and speed are determined by a balance of the horizontal pressure gradient force and the force due to the earths rotation to the left in the northern hemisphere and to the right in the southern… …
13geostrophic wind — That horizontal wind velocity for which the Coriolis acceleration exactly balances the horizontal pressure or gradient force. Pressure gradient force causes air parcel to accelerate. Coriolis begins deflecting air to the right. Coriolis increases …
14geostrophic wind speed — The speed of a geostrophic wind calculated from the pressure gradient, air density, rotational velocity of the earth, and latitude. The calculation ignores the curvature of the wind’s path. A geostrophic wind is proportional to the pressure… …
15geostrophic wind — noun : a wind whose direction and speed are determined by a balance of the pressure gradient force and the force due to the earth s rotation * * * a wind whose velocity and direction are mathematically defined by the balanced relationship of the… …
16geostrophic wind — a wind whose velocity and direction are mathematically defined by the balanced relationship of the pressure gradient force and the Coriolis force: conceived as blowing parallel to isobars. Cf. gradient wind. [1915 20] * * * …
17geostrophic wind speed — /dʒiəˈstɒfɪk/ (say jeeuh stofik) noun the speed of the wind calculated from the pressure gradient, the air density, the rotational velocity of the earth, and the latitude, but neglecting the curvature of the path of the air …
18Planetary boundary layer — Depiction of where the planetary boundary layer lies on a sunny day The planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL), is the lowest part of the atmosphere and its behavior is directly influenced by its… …
19atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
20Clear-air turbulence — For other uses, see Clear Air Turbulence (disambiguation). Clear air turbulence (CAT) is the turbulent movement of air masses in the absence of any visual cues such as clouds, and is caused when bodies of air moving at widely different speeds… …
