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dust storm

A strong wind that blows fine dust across the surface of a desert, which can significantly reduce visibility and adversely affect communications and agriculture. Contrast sand storm. See ...

dust storm

dust storm   Quick reference

A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... storm A wind carrying sufficient dust for visibility to be reduced to less than 1...

dust storm

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A Dictionary of Geography (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... storm Washington et al. (2003) AAAG 93, 2 highlight the primacy of the Sahara as a source of dust, and Qian et al. (2002) J. Climate 15, 10 find that winter temperatures and spring cyclones trigger dust storms...

dust storm

dust storm   Quick reference

A Dictionary of Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2008

... storm Fine dust raised from the surface by strong and often highly turbulent winds, usually after a period of drought . Dust storms are relatively infrequent and mainly occur over arable land. They may be differentiated from the more common sandstorms that occur in desert areas. Visibility must be reduced to less than 1 000 m for the term to be used in synoptic reports. See blowing dust...

dust storm

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... storm A strong wind that blows fine dust across the surface of a desert , which can significantly reduce visibility and adversely affect communications and agriculture. Contrast sand storm . See also haboob...

dust storm

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... storm A wind storm in which dust is blown up from the ground. It occurs when the wind speed exceeds a critical value (commonly 24–48 km/h) that depends on quantity of dust present and the size, shape, dampness, and specific gravity of the dust particles. Dust may be carried to a height of 1500–1800 m or more. The haboob and khamsin are types of dust storm...

dust storm

dust storm noun   Reference library

The Canadian Oxford Dictionary (2 ed.)

Reference type:
English Dictionary
Current Version:
2005
Subject:
English Dictionaries and Thesauri
Length:
17 words
dust storm

dust storm noun   Quick reference

Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
40 words
dust storm

dust storm noun   Quick reference

New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
44 words
dust storm

dust storm  

A strong wind that blows fine dust across the surface of a desert, which can significantly reduce visibility and adversely affect communications and agriculture. Contrast sand storm. See also haboob.
Dust Storms

Dust Storms   Reference library

Encyclopedia of Climate and Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2011

... Storms A dust storm or sandstorm occurs when soil particles are lifted and blown by the wind to such an extent that visibility in a horizontal direction is less than 1 kilometer. The term blowing dust is used if the wind is transporting dust but visibility is greater than 1 kilometer. Dust haze occurs when winds are light but visibility is reduced because of dust suspended in the air. Dust storms may move a great deal of soil for long distances and have a large effect on soil erosion. It has been estimated that each year hundreds of millions of tons of...

Dust Storms

Dust Storms   Reference library

The Oxford Companion to Global Change

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, Environmental Science, Social sciences, Environment
Length:
3,446 words
Illustration(s):
5

...instability. Dust Storms. Figure 2. Frequency of Dust-Storm Days at Dodge City, Kansas (1922–1961) and Big Spring, Texas (1953–1970).(After Gillette and Hanson, 1989.) Dust Storms. Figure 3. Changes in dust conditions in the Sahara and Sahel.(a) The increase in dust haze conditions as rainfall has decreased, at Gao. (b) The relationship between atmospheric dust concentrations at Barbados and the strength of the North Atlantic Oscillation. (From Goudie and Middleton, 2006, fig. 7.7.) Dust storms. Figure 4. The Frequency of Dust Storms in Australia...

Dust Storms

Dust Storms   Reference library

Encyclopedia of Global Change

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Environmental Science, Social sciences, Environment
Length:
2,676 words
Illustration(s):
3

...population levels in the area, dust-storm incidence showed a massive increase in the 1970s and 1980s in a great belt from Mauritania in the west to the Horn of Africa in the east. The variation in frequency of annual dust-storm days and annual rainfall totals for Nouakchott, Mauritania, is shown in Figure 3. The increase in dust-storm days after 1968 is dramatic. By the 1980s, rather than having just a few dust storms per year, Nouakchott was receiving over eighty per year. Dust Storms. Figure 3. Annual Frequency of Dust-Storm Days and Annual Rainfall for...

28 The History of the Book in Italy

28 The History of the Book in Italy   Reference library

The Oxford Companion to the Book

Reference type:
Subject Reference
Current Version:
2010
Subject:
History, Social sciences
Length:
10,068 words
Publisher:
Oxford University Press
Illustration(s):
1

...so that they were accused, rightly, of provoking a lapse in printing standards, in which others followed suit. The French revolutionary armies that swept through Italy overthrew the Venetian Republic in 1797 and, among other things, turned the book trade inside out. When the dust settled in 1814 , much appeared the same, but new ideas were stirring in the north. In particular, there was a growing sense that Italy was more than a geographical expression, and in the Risorgimento (resurgence) that followed, the existence of a national language and...

blowing dust/sand

blowing dust/sand  

A term used in synoptic meteorology to indicate that dust or sand is being transported by the wind, at heights greater than 1.5 m, but that visibility is greater than 1 000 m. See drifting dust/sand; ...
dust counter

dust counter  

An instrument for determining the number of dust particles in a known volume of air, also sometimes known as a konimeter. In one form, the volume may be expanded when the individual dust particles ...
drifting dust/sand

drifting dust/sand  

A term used in synoptic meteorology for material that has been raised by the wind, but which does not obscure visibility at eye level, and is thus less than 1.5 m above the ground (compare blowing ...
Dust Veil Index

Dust Veil Index  

An index, originally developed by Hubert Lamb in 1970, that provides an approximate measure of the influence of volcanic dust on climate. Subsequently replaced by the Volcanic Explosivity Index.
ice prisms

ice prisms  

Small, unbranched ice crystals in the form of needles, columns, or plates that form at low temperatures (below −30 °C) from cloud or clear sky. See diamond dust.
diamond dust

diamond dust  

Minute ice crystals that form in extremely cold air. They are so small as to be barely visible and seem to hang suspended, twinkling as they reflect sunlight.
haboob

haboob  

A dust storm or sandstorm that is caused by cold downdrafts from a thunderstorm which turbulently lift dust and sand into the air. The term is mostly used in connection with the Sudan.

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