calm

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calm

Meteorol of force 0 on the Beaufort scale; without wind

Calm

 

a condition of little or no wind. On the Beaufort scale, wind velocity during a calm is 0–0.2 m/sec. Calms are usually observed within stable anticyclones, in cols, and in the intertropical convergence zone. Calms occur more often in valleys and basins than in open areas with free circulation of air. There is little turbulence during a calm, and therefore harmful atmospheric aerosols (smoke and gas) may accumulate in the lowest atmospheric layer.

calm

[käm]
(meteorology)
The absence of apparent motion of the air; in the Beaufort wind scale, smoke is observed to rise vertically, or the surface of the sea is smooth and mirrorlike; in U.S. weather observing practice, the wind has a speed under 1 mile per hour or 1 knot (1.6 kilometers per hour).

calm

The absence of wind or an apparent lack of motion of the air. It is depicted on synoptic charts as image.
References in periodicals archive ?
LOVING LOOK: Michael Douglas has calmed down since his marriage to Catherine Zeta-Jones
Eventually she calmed down enough but we still had to take her home in a taxi.
In theory, the giant glacial sheets on North America and Europe during the ice age destabilized the climate; once the ice melted, the climate calmed down.
AFTER his exciting adventures with a London taxi driver, hard man Woody Harrelson seems to have calmed down a bit.
WASHINGTON - Consumer prices calmed down in November, helped by smaller increases in energy and food.
There were some nerves to begin with that led to the overthrown passes but I calmed down after the first couple of series and trusted in the coaches and the system,'' Lyon said.
I was shaky at first, then I calmed down and saw the ball good,'' said McMahon, who will play at Cal State Northridge next season.
I haven't done any baseball activity in three weeks, but (the injury) has calmed down.