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The dust plume is easy to track on satellite imagery, in which viewers can watch animations of this phenomenon’s journey and observe the historical concentration of dust as a giant brown mass that has traveled more than 8,000 kilometers.
“The main impacts of Saharan dust will be hazy skies during the day, locally reduced visibility and degraded air quality,” the Climate Prediction Center said. “However, this could also generate some very colorful sunrises and sunsets with deeper oranges and reds compared to normal.”
| When encountering a tropical cyclone, Saharan dust “suppresses the cyclone’s updrafts, and the horizontal winds that carry it significantly change the wind direction.”
This drier air could also allow temperatures to be higher than normal during the day, the Climate Prediction Center warned. Temperatures in Florida could reach record highs this Friday and Saturday.
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The work published in the scientific journal Geophysical Research Letters, shows that 22,000 tons of phosphorus arrive annually from the Sahara to the Amazon basin, providing a quantity of nutrients essential for the health of the rainforest.
Much of the phosphorus detected on this transoceanic journey comes from the Bodele depression (Chad), an area formerly covered by a lake where phosphorus-rich rocks accumulate.
The Saharan dust plume departed from Africa driven by constant and intense trade winds, which carry the dust to the American continent in a channel parallel to the Equator, often taking advantage of the cloudy transit of the ZCIT.
Usually in spring, these waves of Saharan dust usually reach the Caribbean, while as the calendar progresses, the Saharan advection arrives on the southeastern coast of the United States or in the Caribbean.
On our coasts it causes the appearance of red tides and the salinization of the soils of the South of the Iberian Peninsula, the Mediterranean coast and the Balearic Islands. In this entry we talked in detail about the conclusions reached by the Air Quality Network of the Junta de Andalucía in this regard.
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MIAMI – Sahara dust is once again moving toward South Florida on a journey that begins thousands of miles away in the Sahara Desert, but has an impact on the weather on this side of the world as it approaches.
Because the desert is warm and the hot air rises, dust, sand and ground debris rise into the sky and are then carried across the Atlantic Ocean by the northeast trade winds.
One of the most important, is that during this time of cyclone formation, it keeps the tropics calm because it limits storm formation. And in the case of South Florida, its presence also means that there is less chance of seeing rain.
As Sahara dust crosses the Atlantic, it generally occupies a layer of the atmosphere 2 to 2.5 miles thick with its base starting about 1 mile above the surface. “The heat, dryness and strong winds associated with this layer of Saharan air have been shown to suppress the formation and intensification of tropical cyclones,” explains the U.S. National Hurricane Center.
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Magnesium, calcium and even copper travel in a macro dust cloud that can be seen from space. They begin their journey to North and East Africa, and their destination is the Caribbean, South America, and along the way Florida, Monterrey and Yucatan.
On the way they do everything, they inhibit hurricanes, fertilize the ocean and when they reach their destination they fertilize the soil, but they can also cause bad air quality, the eternal headache of big cities.
NASA researcher Santiago Gassó explains that the main impacts are on Central and South America. The effects are varied: phosphorus and nitrogen can be used by plants after falling as rain. Phytoplankton and animal bacteria in the Atlantic Ocean can also take up the nutrients.
The problem lies in air quality. In the United States, the consequences of the dust cloud have already been recorded, according to NASA. In the Caribbean, the main problem is that there is no infrastructure to accurately measure air quality, explains Gassó.