Massive Saharan dust cloud covers the Atlantic - FOX 29 News Philadelphia | WTXF-TV

Massive Saharan dust cloud covers the Atlantic

Posted: Updated:

ACCUWEATHER - The Saharan Air Layer, or known more commonly as Saharan Dust, is a layer of tiny aerosols like sand, dirt and dust that occasionally push from east to west across the tropical Atlantic Ocean during hurricane season. These aerosols originate over the very hot and dry deserts of Africa, like the Saharan Desert, and sometimes get picked up by African easterly waves which push westward from Africa into the Atlantic Ocean.

The Saharan Air Layer is a well-mixed dry pocket of air that usually resides between 5,000 and 15,000 feet above sea level. Since one of the key ingredients for tropical cyclone development is a deep feed of moisture, Saharan Dust often acts to inhibit tropical development. Research suggests that there are three main reasons Saharan Dust has a negative impact on tropical development:

1) A surge in the mid-level African easterly jet increases the vertical wind shear.

2) The inclusion, or drawing in, of dry air into a tropical system.

3) An enhanced trade wind inversion which acts to stabilizes the atmosphere. A stable atmosphere will make it more difficult for deep convection to develop.

Once a pocket of Saharan Dust begins moving westward over the Atlantic Ocean, it is relatively easy to track by using certain infrared satellite products. The algorithm in some infrared products is sensitive to dry, dusty air and, therefore, can track when pockets of this kind of air move from place to place.

Many factors go into forecasting the track and strength of a tropical system. Knowing whether or not a tropical cyclone will have Saharan Dust in its vicinity is one factor that can determine the cyclone's intensity.

Online:

http://www.accuweather.com/en/weather-news/watch-massaive-saharan-dust-cl/16065339


You might also like...

NEW FOX SHOW : Bethenny Frankel Visits FOX 5

BON APPETIT: Restaurant Bans Kids After 7 pm

WASH PO: Challenges Face Bezos

BEST MAN: 2-Year-Old Dies


Like us on Facebook
  • Viral StoriesMore>>

  • Spacewalking astronauts release baby satellite

    Spacewalking astronauts release baby satellite

    Monday, August 18 2014 12:40 PM EDT2014-08-18 16:40:07 GMT
    CAPE CANAVERAL, Fla. (AP) -- Spacewalking astronauts launched a tiny Peruvian research satellite Monday, setting it loose on a mission to observe Earth. Russian Oleg Artemiev cast the 4-inch box off with his gloved right hand as the International Space Station sailed 260 miles above the cloud-flecked planet. The nanosatellite gently tumbled as it cleared the vicinity of the orbiting complex, precisely as planned. "One, two, three," someone called out in Russian as Artemiev let go of the sate...
    CAPE CANAVERAL, Fla. (AP) -- Spacewalking astronauts launched a tiny Peruvian research satellite Monday, setting it loose on a mission to observe Earth. Russian Oleg Artemiev cast the 4-inch box off with his gloved right hand as the International Space Station sailed 260 miles above the cloud-flecked planet. The nanosatellite gently tumbled as it cleared the vicinity of the orbiting complex, precisely as planned. "One, two, three," someone called out in Russian as Artemiev let go of the sate...
  • New marijuana drug 'Wax' looks and feels like lip balm

    New marijuana drug 'Wax' looks and feels like lip balm

    Monday, August 18 2014 12:39 PM EDT2014-08-18 16:39:19 GMT
    It goes by the name Wax, Butter and Honeycomb on the streets, and it can pack a kick equal to 15 to 20 joints of marijuana. The new drug looks and feels like lip balm. It's made from the oils of marijuana plants and has a high level of THC - the chemical that produces a high.
    It goes by the name Wax, Butter and Honeycomb on the streets, and it can pack a kick equal to 15 to 20 joints of marijuana. The new drug looks and feels like lip balm. It's made from the oils of marijuana plants and has a high level of THC - the chemical that produces a high.
  • Pilot's artificial arm detached while landing

    Pilot's artificial arm detached while landing

    Thursday, August 14 2014 10:21 AM EDT2014-08-14 14:21:31 GMT
    LONDON (AP) -- A British air accident report has recounted how a pilot lost control of a passenger plane after his artificial arm became detached during landing. The report says the incident took place as the Flybe flight from Birmingham, carrying 47 passengers, was approaching Belfast City Airport in gusty conditions in February. The 46-year-old pilot had shortly before checked that his prosthetic lower left arm was securely attached to the yoke clamp, but as he performed a maneuver just be...
    LONDON (AP) -- A British air accident report has recounted how a pilot lost control of a passenger plane after his artificial arm became detached during landing. The report says the incident took place as the Flybe flight from Birmingham, carrying 47 passengers, was approaching Belfast City Airport in gusty conditions in February. The 46-year-old pilot had shortly before checked that his prosthetic lower left arm was securely attached to the yoke clamp, but as he performed a maneuver just be...
Powered by WorldNow

WTXF-TV
330 Market Street
Philadelphia, PA 19106-2796

Phone: (215) 925-2929
Fax: (215) 982-5494

Didn't find what you were looking for?
All content © Copyright 2000 - 2014 Fox Television Stations, Inc. and Worldnow. All Rights Reserved.
Privacy Policy | New Terms of Service What's new | Ad Choices