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
Jet stream brings a change. Open for Atlantic lows. . . Tuesday 2 June 2026
Map of Europe showing the jet stream highlighted in colour. The band of strong winds stretches from the Atlantic across France and Germany to Northern Europe.
Tuesday 2 June 2026

Open for Atlantic lows

Jet stream brings a change
Warmer in Lapland than it is here. Arctic Circle sees 25 °C. . . Thursday 4 June 2026
On the left is the Temperature Radar for Europe; on the right is a picture of a lake in Finland surrounded by woodland.
Thursday 4 June 2026

Arctic Circle sees 25 °C

Warmer in Lapland than it is here
Unseasonably windy start to summer. Autumn-like gusts. . . Wednesday 3 June 2026
Wind forecast map of the UK and Ireland showing a low-pressure system west of Ireland, widespread orange wind zones, airflow streamlines, and gusts reaching 45 mph in parts of Ireland and southern Britain.
Wednesday 3 June 2026

Autumn-like gusts

Unseasonably windy start to summer
All weather news
This might also interest you
Bright and warm conditions take hold. Spring-like outlook. . . Thursday 23 April 2026
Split UK map showing warm temperatures up to 21 degrees in orange on the left and clear sunny conditions with temperatures from 12 to 18 degrees on the right, with sun icons across the country.
Thursday 23 April 2026

Spring-like outlook

Bright and warm conditions take hold
Storm Chandra makes impact. Severe gales & heavy rain. . . Tuesday 27 January 2026
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
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