Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
    Home / Editor's Pick /

    Von Kármán and plankton: Vortices captured in the sky and sea

12:00
26 November 2023

Von Kármán and plankton
Vortices captured in the sky and sea

Swirls in cloud and ocean bloom satellite shot
This satellite shot was captured close to the south of Norway's remote archipelago of Svalbard. - © NASA

Two prime examples of fluid dynamics were captured from above earlier this year in a remote part of the far north.

Seen in July, south of Norway's Svalbard archipelago, NASA satellites caught the simultaneous events in the air and ocean with von Kármán vortices above, and a colourful swirling plankton bloom below.

Von Kármán vortices form when air masses have to flow around towering obstacles, as is the case with Bear Island which has a highest elevation point of over 1,700 metres.

In the process, the air swirls downstream of the islands and forms counter-rotating vortices at the edges of the wind shadow zones created by the mountains.

These disturbances of the air currents are also transferred to the clouds, where they become visible as vortex structures.

Make the most of the WindRadarread more

Meanwhile, colourful phytoplankton blooms flowed in the ocean currents of the Norwegian and Barents Sea close by.

Phytoplanktons are microscopic organisms which like land plants absorb carbon dioxide and release oxygen. In isolation, their presence is not a negative sign, but large blooms can block sunlight from reaching ocean life living in their shadow below.

A bloom can last days or weeks depending on how long their source of nutrition sustains their growth. Once a bloom consumes all the available food, the plankton die and sink below the surface.

When viewed from above their appearance can also help highlight eddies and currents of the area they are in.

Ryan Hathaway
More on the topic
The solar eclipse arrives tonight. Great visibility for most. . . Wednesday 12 August 2026
Split image showing an annular solar eclipse on the left and a UK and Ireland weather map on the right with mostly sunny skies, temperatures of 30–31°C in England and 27°C in Dublin.
Wednesday 12 August 2026

Great visibility for most

The solar eclipse arrives tonight
Chance of thundery showers breaking out. Over the coming days. . . Tuesday 18 August 2026
Split weather graphic showing a yellow thunderstorm warning across eastern England alongside radar with heavy showers and lightning near Sheffield, Leicester and East Anglia.
Tuesday 18 August 2026

Over the coming days

Chance of thundery showers breaking out
Hottest day of the year so far. Close to August record. . . Thursday 13 August 2026
Temperature map of London showing 38.1°C at Kew Gardens, with surrounding readings of 35–36°C and deep red shading indicating extreme heat.
Thursday 13 August 2026

Close to August record

Hottest day of the year so far
All weather news
This might also interest you
A frozen start to the weekend. Icy conditions. . . Friday 13 February 2026
UK temperature map dated 14.02 showing widespread subzero values in blue shading, with readings such as −4 in Glasgow, −3 in Dublin, and −2 in London, alongside a blue thermometer icon.
Friday 13 February 2026

Icy conditions

A frozen start to the weekend
New records for England and Wales. Broken again tomorrow?. . . Thursday 25 June 2026
Temperature map of southwest Britain on 25.06 showing extreme heat across southern Wales and southwest England, with Bute Park in Cardiff highlighted at 34.2°C and Yeovilton at 36.4°C amid widespread deep red heat zones.
Thursday 25 June 2026

Broken again tomorrow?

New records for England and Wales
Historic Storm Éowyn arrives. On this day.... . . Saturday 24 January 2026
Split image showing a person in a yellow jacket struggling against strong winds and heavy rain on a street at night on the left, and an Irish wind forecast map on the right with red and purple shading, gusts up to 75 mph, and a wind warning icon, divided by a curved white line.
Saturday 24 January 2026

On this day...

Historic Storm Éowyn arrives
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList