The Trump administration is moving to dismantle one of the world’s most advanced ocean observation systems, sparking alarm among scientists who warn the decision could leave major gaps in climate research, marine forecasting and understanding of rapidly changing oceans.

The National Science Foundation has confirmed plans to scale back the $368 million Ocean Observatories Initiative (OOI), a sprawling network of more than 900 instruments that has monitored ocean conditions continuously since 2016.

A Decade of Data Faces the Scrapheap

Under the plan, in-water infrastructure will be removed from monitoring sites off the US coasts of North Carolina, Oregon, Washington and Alaska, as well as the Irminger Sea between Greenland and Iceland.

The move would gradually switch off real-time data streams that researchers have relied upon for more than a decade. Scientists say the network provides critical insights into ocean circulation, biodiversity, carbon storage and climate variability.

Scientists Warn of Lasting Damage

Researchers fear the loss will extend far beyond the hardware itself. The specialised teams responsible for operating and maintaining the network could disperse, making any future rebuild far more difficult and expensive.

Hilary Palevsky, an oceanographer at Boston College, said the scientific community was only beginning to fully exploit the vast datasets generated by the programme. She warned that expertise built over years could disappear alongside the infrastructure.

Climate Research Caught in the Crossfire

The decision lands amid broader efforts by the Trump administration to roll back climate-related initiatives while expanding deep-sea mining and easing fishing regulations.

OOI data has played a significant role in studying the Atlantic Meridional Overturning Circulation, a vast system of ocean currents that helps regulate global climate. Scientists have increasingly warned that disruptions to the system could have far-reaching consequences for weather patterns around the world.

Political Storm Builds

Democratic lawmakers quickly condemned the move. Senator Chris Van Hollen called it short-sighted, while Senator Sheldon Whitehouse accused the administration of turning away from evidence as oceans continue to warm.

The NSF insists the programme is not being eliminated entirely. Officials say the decision reflects a strategy focused on emerging technologies and evolving research priorities.

For many researchers, however, the concern is immediate: once the instruments are gone and the expertise scattered, rebuilding what has been lost may not be simple — or even possible.

Dismay as Trump officials to dismantle key ocean monitoring system

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