The 'So What' Of The Haboob Phoenix And Trans-Atlantic Saharan Dust



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"Cool" Sunsets, shelf clouds, waterspouts, tornadoes, or interesting clouds. However, it could not be used in the first days of the month of August. There was a jaw-dropping haboob in Phoenix, and an African dust was moving across the Atlantic Ocean. Here's why you should care.

Recent haboob in Phoenix, Arizona.NWS Phoenix

As a scientist, I am usually aware of the significance of "why do I care that dust is moving across the Atlantic?" gold "ummm, haboob looks cool and sounds funny so so what?"& nbsp; Let's start with the impressive haboob & nbsp; that affected Phoenix, Arizona.

Tea National Weather Service (NWS) -Phoenix preliminary report on the meteorological conditions that led to this social media-dominating event said,

As the storms progressed, the strong outflow winds caused a large dust storm to develop and move south-to-north across the two counties. Numerous reports of near zero visibility have been reported early in the storm, but the effect of the storm has not been reduced.

Radar image of the downpours in the Phoenix area. (Source: NWS Phoenix and ABC 15)NWS Phoenix

My & nbsp;colleague Trevor Nace has written in Forbes on how haboobs form. In a weird twist, there has been some recent & nbsp;"nationalization" of the weather term Jason Samenow wrote in the Capital Weather Gang article from a previous event,

The Weather Service's use of 'haboob' was entirely appropriate …. Haboobs are common in the Southwest desert and the Middle East, where the term originated. It is also true that many weather and weather conditions are derived from these languages ​​- hurricane, tornado and derecho are all Spanish in origin, not to mention El Ni & ntilde; o and La Ni & ntilde; a.

Haboobs are an underrated weather hazard.& Nbsp; ACCORDING to a 2016 National Weather Service Report, blowing dust is the third deadliest weather phenomenon in Arizona behind extreme heat and flooding. It is also the leading cause of weather-related injuries. Blowing dust is a significant respiratory hazard and creates challenges for all modes of transportation. It can also be linked to the spread of Valley Fever.& nbsp; The report also points out,

There are two types of blueness that are common across Arizona ….. A haboob is a wall of dust that extends several hundred meters to a couple in the atmosphere. In the United States, the word has been used by Idso et al. (1972) in a paper entitled "An American Haboob." Since the early 2000's the use of the word haboob has become more common with the use of meteorologists, media and the public … The second type of blowing dust is gusty winds, mainly in the fall, and more

4 August 2018 satellite image with a feather of African dustNOAA

The other dust story is captured Logan Vicknair's tweet on August 4th, & nbsp;"dust clouds from Africa and Galveston 's (Texas) been clear multiple times. What a wild summer."& Nbsp;Headlines in Portugal and Spain wrote of unbelievable heat & nbsp; yellow skies caused by an influx of Saharan dust.& Nbsp;The University of Athens SKIRON model (below) shows how to travel to the Iberian Peninsula. The model also reveals that African dust takes a "fork in the road" and aheads west across the Atlantic Ocean. From a weather perspective, Saharan dust rides the easterly trade winds to the west. In the United States, in the tropics it is reversed. & Nbsp;This is related to complex fluid dynamics associated with general circulation of the planet.

Model forecasts of dust in Europe during the first week of August 2018University of Athens

Dust has been apparent in the Caribbean islands and as far west as Texas this summer. & Nbsp;According to the BoDEx study,

most atmospheric dust comes from a very few places. By far the dustiest is the Bod & oacute; depression (in the day of northern Chad). At the Bod, the strong winds, funneled up the slopes of the Tibesti Mountains, pick up fine diatomites and clays from the bed of a now-dry lake. Some 5000 years ago, when it was full, the lake was "Mega-Chad", then the size of the Caspian Sea. Today, the Bod & oacute; well over half of the c. 400-700M tons of West Africa each year. Much ends in the Atlantic, but some reaches South America. The process is year-long, but it is most intense in spring and early summer, when the Harmattan cloaks West Africa in dust.

Matt Lanza is managing editor of Space City Weather. During an earlier July event in which Saharan dust was apparent in Texas, Lanza told the Houston Chronicle, "It's only a couple of times per summer. "The dust comes from the African Ocean. Tea "so what" is that & nbsp;Saharan dust has been found to cause allergic reactions in humans, coral disease, aviation hazards, and red tides.& Nbsp;Published studies are starting to close in on Saharan dust as a cause of increased respiratory disease in Puerto Rico.

It will be important going forward to understand this mega-dust generation region and even meteorological processes. For example, the NASA image (below) shows significant Saharan dust activity during the 2017 hurricane season. Dust can impede the development of hurricanes because it brings dry air into the hurricane "heat engine." The dust feathers also bring hurricane-suppressing wind shear, and the dust particles can reduce the formation of cloud droplets.

NASA model of dust, smoke, and hurricanes in 2017.NASA

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Sunsets, shelf clouds, waterspouts, tornadoes, or interesting clouds. However, it could not be used in the first days of the month of August. There was a jaw-dropping haboob in Phoenix, and an African dust was moving across the Atlantic Ocean. Here's why you should care.

Recent haboob in Phoenix, Arizona.NWS Phoenix

As a scientist, I am usually aware of the significance of an eventwhy do I care that dust is moving across the Atlantic?" gold "ummm, haboob looks cool and sounds funny but so what? " Phoenix, Arizona.

The National Weather Service (NWS) -Phoenix preliminary report on the meteorological conditions that led to this social media-dominating event said,

As the storms progressed, the strong outflow winds caused a large dust storm to develop and move south-to-north across the two counties. Numerous reports of near zero visibility have been reported early in the storm, but the effect of the storm has not been reduced.

My colleague Trevor Nace has written a very good account for Forbes on how haboobs form. In a weird twist, Jason Samenow wrote in a Capital Weather Gang article from a previous event,

The Weather Service's use of 'haboob' was entirely appropriate …. Haboobs are common in the Southwest desert and the Middle East, where the term originated. It is also true that the term is used in many cases – hurricane, tornado and derecho are all Spanish in origin, not to mention El Niño and La Niña.

Haboobs are an underrated weather hazard. According to a 2016 National Weather Service report, blowing dust is the third deadliest weather phenomenon in Arizona behind extreme heat and flooding. It is also the leading cause of weather-related injuries. Blowing dust is a significant respiratory hazard and creates challenges for all modes of transportation. It can also be linked to the spread of Valley Fever. The report also points out,

There are two types of blueness that are common across Arizona ….. A haboob is a wall of dust that extends several hundred meters to a couple in the atmosphere. In the United States, the word has been used by Idso et al. (1972) in a paper entitled "An American Haboob." Since the early 2000's the use of the word haboob has become more common with the use of meteorologists, media and the public … The second type of blowing dust is gusty winds, mainly in the fall, and more

4 August 2018 satellite image with a feather of African dustNOAA

The other dust story is captured Logan Vicknair's tweet on August 4th, "dust clouds from Africa and Galveston 's (Texas) been clear multiple times. Headlines in Portugal and Spain wrote of unbelievable heat and yellow skies caused by an influx of Saharan dust. The University of Athens SKIRON model (below) shows how to travel to the Iberian Peninsula. The model also reveals that African dust takes a "fork in the road" and ahead of the Atlantic Ocean. From a weather perspective, Saharan dust rides the easterly trade winds to the west. In the United States, in the tropics it is reversed. This is related to complex fluid dynamics associated with general circulation of the planet.

Model forecasts of dust in Europe during the first week of August 2018University of Athens

Dust has been apparent in the Caribbean islands and as far west as Texas this summer. According to the BoDEx study,

most atmospheric dust comes from a very few places. By far the dying is the Bodele depression (in the Djourab of northern Chad). At the Bodele, strong winds, funnels of the Tibesti Mountains, pick up fine diatomites and clays from the bed of a now-dry lake. Some 5000 years ago, when it was full, the lake was "Mega-Chad", then the size of the Caspian Sea. Today, the Bodele is well over half of the c. 400-700M tons of West Africa each year. Much ends in the Atlantic, but some reaches South America. The process is year-long, but it is most intense in spring and early summer, when the Harmattan cloaks West Africa in dust.

Matt Lanza is managing editor of Space City Weather. During an earlier July event in Saharan dust was apparent in Texas, Lanza told the Houston Chronicle, "It's not so much out of the ordinary …" The dust palls coming from The Atlantic Ocean The Atlantic Ocean The Saharan is one of the world's most important alien species in the world. as a cause of increased respiratory disease in Puerto Rico.

It will be important going forward to understand this mega-dust generating region because of the dust plays a role in the Earth's climate and even meteorological processes. For example, the NASA image (below) shows significant Saharan dust activity during the 2017 hurricane season. Dust can impede the development of hurricanes because it puts the air into the hurricane "heat engine." The dust feathers also bring hurricane-suppressing wind shear, and the dust particles can reduce the formation of cloud droplets.

NASA model of dust, smoke, and hurricanes in 2017.NASA