mineral dust

(redirected from Saharan dust)

mineral dust

A very finely divided mineral product, the greatest bulk of which will pass through a 74-micron (No. 200) sieve; the most common such material is pulverized limestone.
References in periodicals archive ?
Bacteria and viruses are typically deposited back to Earth via rain events and Saharan dust intrusions.
The sun's unusual colour was caused by a large amount of red Saharan dust being kicked up by Storm Ophelia and blown towards the UK.
A Met Office spokesman said: "The hurricane has tracked up in its route from the Atlantic a lot of Saharan dust, which is sprayed into the atmosphere.
As Ophelia has come up from the Azores, the storm has picked up Saharan dust from North Africa and picked up dust from wild fires in Spain and Portugal," a spokeswoman for Britain's Met Office said.
2011) associated with Saharan dust deposits (Walsh and Steidinger 2001).
It often brings Saharan dust with it, as well as raising temperatures, humidity and setting off thunderstorms as it meets cooler air from the Atlantic.
Many other factors are at play, including Sahelian drought, Saharan dust, tropical mid-level moisture, easterly waves and other sea surface temperature anomalies over other portions of the basin, to name a few.
The warm African air could also bring Saharan dust, prompting smog warnings.
A HUGE Saharan dust cloud is expected to hit the UK on Thursday as the country basks in what could be the hottest day of the year.
Saharan dust could strike the region today, with a risk of air pollution spelling danger for those with respiratory problems.
The problem was caused by a build-up of pollutants from local sources such as traffic fumes which are not dispersing in the still weather, combined with dirty air blown from the continent and a small amount of Saharan dust.