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 classic literature ?
"Desire the governor to come to me," added the king, in accents full of calm and dignity.
At length that calm despair which occurs only in a strong and somewhat stubborn character, and yields to no second spring of hope, settled down on the spirit of Adam Colburn.
For some days we had a dead calm, or very light winds, during which the crew amused themselves with fishing, and hooked an unlucky dolphin, who expired, in all his rainbow colours, on the deck: an event of such importance in our barren calendar, that afterwards we dated from the dolphin, and made the day on which he died, an era.
We set to work: he sufficiently interested in the game, but calm and fearless in the consciousness of superior skill: I, intensely eager to disappoint his expectations, for I considered this the type of a more serious contest, as I imagined he did, and I felt an almost superstitious dread of being beaten: at all events, I could ill endure that present success should add one tittle to his conscious power (his insolent self-confidence I ought to say), or encourage for a moment his dream of future conquest.
Again: as the profound calm which only apparently precedes and prophesies of the storm, is perhaps more awful than the storm itself; for, indeed, the calm is but the wrapper and envelope of the storm; and contains it in itself, as the seemingly harmless rifle holds the fatal powder, and the ball, and the explosion; so the graceful repose of the line, as it silently serpentines about the oarsmen before being brought into actual play -- this is a thing which carries more of true terror than any other aspect of this dangerous affair.
Aouda was amazed to find him as calm as he had been from the first time she saw him.