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German Argo Float Travelled Across Atlantic From Canada To Ireland

5th July 2019
An Irish Argo float being deployed from the RV Celtic Explorer An Irish Argo float being deployed from the RV Celtic Explorer Photo: Tom Szumski

A German Argo float deployed off Greenland in 2014 travelled 3,500km across the Atlantic Ocean and was recovered off the coast of Co Cork in 2018.

The Marine Institute was able to trace the owner and help return the Argo float to the Federal, Maritime and Hydrographic Agency in Hamburg, Germany.

Argo floats are deployed across the world’s oceans and distribute real-time information on temperature and salinity from up to 2,000m below the ocean surface.

Argo float number 6902584 was deployed in 2014 from the RV Knorr between Greenland and Iceland, and provided regular measurements until March 2017. At this time the float was recorded in the Labrador Sea, off Newfoundland, Canada.

Data is transmitted via satellite every 10 days for the three-to-four years of an Argo float's lifespan. However, by July 2017, this float was drifting at the surface in the North Atlantic and only reporting its GPS location.

The Argo float was covered in marine growth; and clearing this debris revealed the float's unique identification number

Seven months later, in February 2018, the Marine Rescue Sub Centre (MRSC) in Valentia contacted the Marine Institute regarding an Argo float that had been recovered by a Union Hall lifeboat off the coast of West Cork.

Diarmuid Ó Conchubhair of the Marine Institute, manager of the Irish Argo programme and vice chair of the European-Argo Management Board, retrieved the Argo float from Co Cork.

And he thanked the Marine Rescue Sub Centre in Valentia for their efforts in recovering the float and keeping it in storage.

“The Argo float was covered in marine growth; and clearing this debris revealed the float's unique identification number,” he said.

“As a member of the European Argo Programme, the Marine Institute was able to contact national programme managers to trace the float to its owner, the Federal, Maritime and Hydrographic Agency in Hamburg.”

Earlier this year, the Marine Institute's RV Celtic Explorer transported the Argo float to Hamburg, where it is now a display and demonstration float at the Federal, Maritime and Hydrographic Agency.

Birgit Klein, manager of the German Argo Programme and chair of the European-Argo Management Board, expressed her thanks on behalf of the agency to the Marine Institute for collecting and returning the float.

She said: “The Argo float has recently been transformed into an exhibit — its metal hull has been replaced with a clear plastic cylinder to allow the public to view the float's internal mechanisms.

And Klein explained how this particular float came to malfunction.

“Analysis of the float data showed that the float experienced sub-zero water temperatures in the Labrador Sea. With such low surface temperatures, it was likely that sea ice was present and caused mechanical damage to the float.”

Such water temperatures were recorded by the Argo float in the Labrador Sea, off Newfoundland in Canada, during the winter seasons from December 2015 to May 2016 and again in December 2016 to April 2017.

There are currently 3,800 profiling floats in the world's oceans as part of the Argo Programme

Ó Conchubhair said: “It is not uncommon for research devices to travel from the Canadian coast to the west coast of Ireland. In early 2018, a research buoy was found on the shore at Connemara in Co Galway, and had drifted over 6,000km across the Beaufort Sea, Artic Ocean and Atlantic.

Argo floats are used collect measurements on temperature and salinity, what Ó Conchubhair says are two essential climate variables that help to describe the oceans’ physical and thermodynamic state.

“Through our involvement in the Euro-Argo Programme, the Marine Institute deploys three floats a year and works with international partners to observe and understand how our ocean is changing and also provide essential data for climate and oceanographic research,” he said.

There are currently 3,800 profiling floats in the world's oceans as part of the Argo Programme.

The Marine Institute’s participation in the programme allows Ireland to build national capacity in the ocean observation sphere and places Ireland at the centre of global efforts to model, project, mitigate and adapt to the potential impacts of climate change.

Click HERE for more information about Ireland’s involvement in the Argo programme, and track and view the data available from Irish Argo floats at digitalocean.ie

Published in Marine Science
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Marine Science Perhaps it is the work of the Irish research vessel RV Celtic Explorer out in the Atlantic Ocean that best highlights the essential nature of marine research, development and sustainable management, through which Ireland is developing a strong and well-deserved reputation as an emerging centre of excellence. From Wavebob Ocean energy technology to aquaculture to weather buoys and oil exploration these pages document the work of Irish marine science and how Irish scientists have secured prominent roles in many European and international marine science bodies.

 

At A Glance – Ocean Facts

  • 71% of the earth’s surface is covered by the ocean
  • The ocean is responsible for the water cycle, which affects our weather
  • The ocean absorbs 30% of the carbon dioxide added to the atmosphere by human activity
  • The real map of Ireland has a seabed territory ten times the size of its land area
  • The ocean is the support system of our planet.
  • Over half of the oxygen we breathe was produced in the ocean
  • The global market for seaweed is valued at approximately €5.4 billion
  • · Coral reefs are among the oldest ecosystems in the world — at 230 million years
  • 1.9 million people live within 5km of the coast in Ireland
  • Ocean waters hold nearly 20 million tons of gold. If we could mine all of the gold from the ocean, we would have enough to give every person on earth 9lbs of the precious metal!
  • Aquaculture is the fastest growing food sector in the world – Ireland is ranked 7th largest aquaculture producer in the EU
  • The Atlantic Ocean is the second largest ocean in the world, covering 20% of the earth’s surface. Out of all the oceans, the Atlantic Ocean is the saltiest
  • The Pacific Ocean is the largest ocean in the world. It’s bigger than all the continents put together
  • Ireland is surrounded by some of the most productive fishing grounds in Europe, with Irish commercial fish landings worth around €200 million annually
  • 97% of the earth’s water is in the ocean
  • The ocean provides the greatest amount of the world’s protein consumed by humans
  • Plastic affects 700 species in the oceans from plankton to whales.
  • Only 10% of the oceans have been explored.
  • 8 million tonnes of plastic enter the ocean each year, equal to dumping a garbage truck of plastic into the ocean every minute.
  • 12 humans have walked on the moon but only 3 humans have been to the deepest part of the ocean.

(Ref: Marine Institute)

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