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
A heatwave is on the way in Europe. Is El Niño to blame?. . . Tuesday 16 June 2026
Split image showing a Europe temperature map with widespread red heatwave conditions and temperatures above 30 C on the left, and an El Niño ocean temperature anomaly map of the Pacific Ocean on the right with a broad band of unusually warm water along the equator.
Tuesday 16 June 2026

Is El Niño to blame?

A heatwave is on the way in Europe
Heat alerts issued for parts of England. Back to around 30 °C. . . Tuesday 16 June 2026
Temperature map of the UK, Ireland, and western Europe on 19.06 showing warm to hot conditions across the UK with temperatures reaching 29 °C near London and a red heat warning symbol highlighting elevated heat risk.
Tuesday 16 June 2026

Back to around 30 °C

Heat alerts issued for parts of England
Rainbows shine on unsettled week. Your weather - Your shots. . . Sunday 14 June 2026
Split image showing a pastel rainbow above a lighthouse and harbor wall on the left, and an offshore wind farm stretching across the sea beyond green coastal farmland on the right.
Sunday 14 June 2026

Your weather - Your shots

Rainbows shine on unsettled week
All weather news
This might also interest you
Happy New Year. Hello 2026. . . Wednesday 31 December 2025
Illustration of white and yellow fireworks on a blue background.
Wednesday 31 December 2025

Hello 2026

Happy New Year
Turbulent weather in the Canary Islands. Storm and rain. . . Friday 12 December 2025
Weather graphic showing rain and wind fields over the Canary Islands and a central warning symbol.
Friday 12 December 2025

Storm and rain

Turbulent weather in the Canary Islands
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
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