The tropical Atlantic is currently experiencing the most significant outbreak of Sahara dust in the past two years. This phenomenon has temporarily disrupted tropical activity and contributed to the cooling of Atlantic waters, particularly near Africa, as reported by Local 10.
According to the information, the dry air laden with dust from the North African deserts typically peaks in late June and July and is a regular part of the seasonal cycle. In 2023, the presence of Sahara dust was minimal, marking the lowest coverage recorded in at least 20 years since satellites began measuring this variable.
Impact on Hurricane Activity
In response to questions about whether this phenomenon can reduce hurricane activity, experts stated that while well-timed dust outbreaks can suppress hurricane development by injecting dry air into the tropics and increasing wind shear at the edges of the dust cloud, there is little correlation between the dust and overall cyclonic activity. This is because the Sahara dust dissipates rapidly as hurricane activity ramps up in late August.
We cannot rely on increased dust for the remainder of this hurricane season, but its presence is encouraging in the short term following the start of the most active season in the past 30 years, according to forecasts. The deep tropical Atlantic will remain quiet until next week, partly due to the dust that has been largely absent since 2022, the report notes.
However, it is recommended to use this lull to bolster hurricane supply kits, as the season will resume soon, and August, the first major month of the season, is less than three weeks away, experts emphasized.
Matt Devitt, a meteorologist from Pennsylvania State University, recently reported that among the negative consequences of this phenomenon are poor air quality, which can exacerbate respiratory conditions, as well as hazy skies and dusty rain. He also mentioned that while the occurrence of storms decreases, those that do form could be stronger. He noted that the sensation of heat intensifies and that the dust can carry bacteria, leading to algae blooms such as red tide.
Sahara Dust and its Effects
Here are some frequently asked questions about the Sahara dust phenomenon and its impact on the Atlantic and hurricane activity.
How does Sahara dust affect hurricane development?
Sahara dust can suppress hurricane development by injecting dry air into the tropics and increasing wind shear at the edges of the dust cloud.
What are the negative effects of Sahara dust?
The negative effects include poor air quality, exacerbation of respiratory conditions, hazy skies, dusty rain, intensified heat sensation, and the potential for algae blooms due to bacteria in the dust.
Is Sahara dust presence common during this season?
Yes, the presence of Sahara dust typically peaks in late June and July as part of the regular seasonal cycle.