As in other parts of the world, the wind can blow strongly over deserts – whipping up dust and sand high into the sky.
Strong winds blowing across the Atlantic carried the dust all the way to Texas, a more than 5,000-mile journey. Dust from the Sahara aids vegetation growth in the Amazon. Saharan dust may act as a fertilizer for South American's Amazon rainforest. Only after the dust moved west of the storm did Helene’s intensification accelerate, reaching Category 3 status four days later.
How does the Saharan Dust travel? A Sahara Dust episode is in progress now in the West Indies. About 43 million tons of dust travel farther to settle out over the Caribbean Sea which greatly affects the air that we breathe. And maybe stay inside for a bit because the air quality might not be too great. Saharan dust made a 5,000-mile-long journey from Africa to the Gulf of Mexico and South Texas.
These wind-blown particles affect the atmosphere’s radiation balance, clouds, and the ocean carbon cycle but are generally ignored in models. Giant mineral dust particles (>75 μm in diameter) found far from their source have long puzzled scientists. As in other parts of the world, the wind can blow strongly over deserts – whipping up dust and sand high into the sky.
In one word - wind! This hot, dusty air puts a stop to any thunderstorms that may develop in the moist layer beneath it. Saharan dust is a mixture of sand and dust from the Sahara, the vast desert area that covers most of North Africa. Motorists across the country awoke to grains of dust coating their cars on Monday, which had travelled all the way from the Saharan desert to leave a little piece of North Africa on their vehicles. As in other parts of the world, the wind can blow strongly over deserts - whipping up dust and sand high into the sky. African Saharan Dust On Its Way To Texas - Austin, TX - Particles in the Austin air Friday, Saturday could measure 2.5 micrometers in size, but the dust makes for stunning light-nuanced sunsets. But it does provide a remarkably large amount of dust compared to its relatively tiny size. How does it get to the UK? In one word – wind!
NASA used satellite data to quantify how must dust reaches the rainforest, including the amount of phosphorus . We are investigating whether African dust is playing a role in coral reef declines throughout the Caribbean region, and if African dust has a negative effect on human health.
How does the Saharan Dust travel? Dust from the Saharan Desert can travel from Africa across the Atlantic Ocean to Puerto Rico.
There is a large variability in the dust transport across the Atlantic into the Caribbean and Florida from year to year. In one word – wind! How does the Saharan Dust travel? Depending on the strength of winds, the dust can travel for thousands of miles, winding up as far west as Brazil and the United States. Saharan Dust is a mixture of sand and dust from the Sahara, the vast desert area that covers most of North Africa, according to the UK Met Office. If the winds in the upper part of the atmosphere are blowing West, the dust can be carried across to the Caribbean island chain, just as if they blow North, the dust could be could travel as far as the United Kingdom. So the next time you find yourself in the Caribbean or Gulf Coast and things seem a bit hazy, remember that you might be looking at part of the Saharan desert coming to say hello. Data from the Meteosat-9 weather observing satellite is processed to identify areas of air that has come from the Saharan Desert. The role the Sahara Desert plays in hurricane development is related to the easterly winds (coming from the east) generated from the differences between the hot, dry desert in north Africa and the cooler, wetter, and forested coastal environment directly south and surrounding the Gulf of Guinea in west Africa. Origin of the Dust The Sahara is the greatest single stretch of desert in the world, besides the Arctic and Antarctic, stretching about 3.5 million square miles across northern Africa. What is Saharan Dust?
Millions of tons of Saharan dust land in the Amazon each year. As in other parts of the world, the wind can blow strongly over deserts - whipping up dust and sand high into the sky. Hundreds of millions of tons of mineral dust are transported thousands of miles through the atmosphere from the Sahara and Sahel of Africa to the Caribbean and the Americas every year. It’s more unusual that dust from the Sahara is transported directly to the UK, but when it does, rain can bring the dust back down to earth. Atmospherically, the dust sits in what meteorologists call the Saharan air layer, a hot and dry layer of the atmosphere that sits directly above cooler and more humid air above the Atlantic Ocean.
During the first two days following Helene’s development as a tropical depression Saharan dust was observed within the storm’s periphery (Figure 2) impeding its intensification.