katabatic wind


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Related to katabatic wind: Anabatic wind

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 ?
Furthermore, the relation between downslope windspeed and the slope suggests that the katabatic wind is modified by changes of the angle and by the interaction with the mountain wave, propagating the perturbations upwards and modulating the flow in the first thousand of meters above the ground.
k])) greater than one, as in present case, where Fr>l along the slope (not shown) and the katabatic wind can be considered a shooting flow in terms of the hydraulic theory.
When they did not return after six hours, and since there was no radio communication, the Naval Arctic Research Lab (NARL) at Barrow was alerted and sent a rescue plane, which reported that the two on the glacier were safe but could not take off because of the rough glacier surface and strong down-glacier katabatic winds.
This site was chosen because of the particularly strong katabatic winds present there, as well as its wide expanse of open water surrounded by sea ice.
According to the observed katabatic winds and the evolution of the gradient Richardson number at z=3m and z=20m depicted in Fig.
Young Sinfonia (classical), Jambone (jazz) and Folkestra (folk) have been joined by two new ensembles: Katabatic Winds and Quay Voices.
Katabatic Winds is The Sage Gateshead's youth wind ensemble, with the region's finest young wind players showcasing their talent in a variety of styles of music.
Mawson called the location 'the home of the blizzard', an apt description of a location where powerful katabatic winds regularly rush down from the continent's frigid interior, with gusts sometimes reaching speeds of 300km/h.
Katabatic Winds, the most recently formed of The Sage Gateshead's youth ensembles, celebrate the end of their first full season with this concert which includes the premiere of a piece composed by three postgraduate composition students from Newcastle University: Sergio Camacho, Johann Hasler and Matthew Rowan.
A Katabatic Winds concert on Sunday evening in Hall Two will showcase a new piece based on the atmosphere of these films.
We can see the crevasses at the bottom of the continent and watch katabatic winds 50km away.
It's taking place on March 26 in Hall One of the venue and will see Folkestra, Jambone, Katabatic Winds, Quay Voices and Young Sinfonia congregate for an evening of music making.