katabatic wind

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katabatic wind

[¦kad·ə¦bad·ik ′wind]
(meteorology)

Katabatic Wind

 

a flow of cold air down relatively gentle slopes of mountain ranges, caused by the force of gravity (in contrast to the bora, which blows down steep slopes). Such winds are observed primarily at night when the ground layer of air cools. They include glacier winds, which are more intense in the summer when the air above glaciers is especially cool relative to the air above the surrounding area at the same elevation. The most severe katabatic winds occur in Antarctica, where air flows from the high continental ice cap to the shores; these winds reach high velocities near the shores but do not extend farther than 8–10 km into the ocean. The direction of katabatic winds at the antarctic shore is most frequently southeast; this is a result of the meridional component of the wind and the eastward movement of air around a continent in the course of general atmospheric circulation.

katabatic wind

katabatic wind
The cold wind that flows down the slopes of the mountains and spreads at the base of the mountains.
References in periodicals archive ?
At higher elevations, winter snow redistribution due to katabatic winds results in an increase in accumulation from the centre of the ice cap towards the margins, with the minimum accumulation encircling the ice cap at elevations 100-200 m below the summit (Koerner, 1966b).
Rachel Falconer notes that the important question arising out of katabatic narratives is whether anything of value has been gained from the descent into hell.
These features include extensive loess deposits (now supporting the farming industry in large areas of the Mississippi basin) transported by ferocious katabatic winds that formed as air flowed off the cold surfaces of glaciers, river valleys carved by water surging from glacial lakes (Lake Agassiz, Lake Duluth, etc.
It was the first time all five regional ensembles, Young Sinfonia, Folkestra, Jambone, Katabatic Winds and Quay voices, had played together.
Director Luc Jacquet and cameramen Jerome Maison and Laurent Chalet ventured to Antarctica, braving blizzards and freezing 100mph katabatic winds to photograph these remarkable birds in their natural environment as they travel to their breeding ground and seek the perfect partner.
Owned by JP McManus the 10-year-old looks capable of taking the step up to Champion class from the Grand Annual that previous winners Pearlyman, Katabatic and Edredon Bleu did.
Powerful katabatic winds arrived without warning to shatter the calm.
22) As it is uniquely in Christ that both the katabatic (from God to the world) and anabatic (from the world to God) movements are united, therefore we ought to "see the work of the Son as oriented toward the giving of the Spirit, and that of the Spirit as oriented toward the goal of Sonship.
Katabatic winds blew the aerosol cloud over 50, 100, 200, and 400 sampling arcs.
From March through to October when there is minimal to no solar radiation, the soil climate is influenced strongly by air temperature changes and soil temperatures may vary by up to--35[degrees]C over a few days during periods of katabatic winds.