File:Gravity Waves and Dust over the Red Sea (MODIS 2022-07-05).jpg
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![File:Gravity Waves and Dust over the Red Sea (MODIS 2022-07-05).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Gravity_Waves_and_Dust_over_the_Red_Sea_%28MODIS_2022-07-05%29.jpg/800px-Gravity_Waves_and_Dust_over_the_Red_Sea_%28MODIS_2022-07-05%29.jpg?20240109215810)
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On June 30, when the Moderate Resolution Imaging Spectroradiometer (MODIS) acquired a true-color image of the relentless storms, the dust had thinned.
Summary
[edit]DescriptionGravity Waves and Dust over the Red Sea (MODIS 2022-07-05).jpg |
English: Throughout most of the month of June 2022, strong winds carried dust from the Sahara Desert over the Red Sea, sometimes creating a heavy blanket of airborne dust more than 1,000 km (620 mi) wide. On June 30, when the Moderate Resolution Imaging Spectroradiometer (MODIS) acquired a true-color image of the relentless storms, the dust had thinned. But it had also acquired a peculiar appearance, with many parallel lines stretching across most of the Red Sea dust.
These lines were most likely caused by gravity waves in the atmosphere, a type of turbulence caused by wind shear. As hot, dusty desert air move across the cooler, moist waters of the Red Sea, the lower layers of the air are slowed down, causing ripples in the atmosphere. These ripples are a lot like waves we can see moving across the surface of a lake—undulating up and down to create crests and troughs. The same motion often happens in the atmosphere, but waves can’t be seen when the air is clear. But when clouds are either cloudy or dusty, the gravity waves become visible. In this case, the motion of the air over the Red Sea is sorting the dust into bands as the atmosphere rolls along with the motion of the wind over the water. |
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Date | Taken on 30 June 2022 | ||
Source |
Gravity Waves and Dust over the Red Sea (direct link)
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Author | MODIS Land Rapid Response Team, NASA GSFC |
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This media is a product of the Aqua mission Credit and attribution belongs to the mission team, if not already specified in the "author" row |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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