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The Threat to Ocean Monitoring The Trump administration's plan to dismantle an ocean observation system vital to understanding the climate crisis and marine ecosystems would “severely degrade” the accuracy of weather predictions and El Niño forecasts, with economic consequences for the US, European and American scientists have warned. The Ocean Observatories Initiative The Ocean Observatories Initiative (OOI), run by the US National Science Foundation, is a vast network of seafloor systems, underwater gliders and moored surface platforms that feeds data to researchers, policymakers, educators and mariners worldwide. The initiative, which covers both US coastlines and extends into the North Atlantic and Southern Ocean, has been used to study marine heatwaves, harmful algal blooms, subduction zone earthquakes, ocean acidification and fisheries variability. The Data Analysis Decommissioning the US system, which plays a major part in a global ocean observation network, would lead to a massive increase in error in the annual estimates of ocean heating rates, according to research published last month. Removing US observations alone would produce a 163% increase in error for annual ocean heating rates. The Impact Analysis The loss of US observations, in a year predicted to be an El Niño year, with “supercharged” weather extremes, could also “lose the ability to see it coming clearly to act in time”. The stakes are concrete: farmers in the US and across South America use El Niño forecasts to decide what to plant and when – whether to expect drought or flooding shapes every agricultural decision months in advance. The Prediction “The US government wants to save less than a billion in sensors, which are the eyes and ears of the ocean” said Abrahams. “We have hundreds of billions in climate costs per year. The cost of the observation system is a fraction of the climate costs from hurricanes and storms that hit the US. ” The system, is, Abraham said is “quite an inexpensive way to reduce climate-related costs”.

The Marine Heatwave's Persistence and ExpansionAn enormous marine heatwave off the US west coast is ringing alarm bells among ocean and atmospheric scientists as new data shows its ecological and environmental effects are intensifying. The unusual area of warm water has persisted since peaking in size during September 2025 and still stretches thousands of miles from the California coastline – more than halfway across the Pacific – affecting a vast triangle-shaped region of oceanic habitats from Hawaii to British Columbia and southward to Mexico.The Event DetailsAs recently as early April, marine scientists had hoped that the heatwave might diminish and the worst of its effects may be avoided. However, new projections released last week by the National Oceanic and Atmospheric Administration (Noaa) show it is now expected to expand and strengthen in the months to come.The Data AnalysisScientists say the effects may already be far reaching. A surge in the marine heatwave would accompany the formation of El Niño in the tropical Pacific – resulting in an atmospheric and oceanic mélange that could influence everything from record-breaking temperatures on land to disrupted marine food chains.The Impact AnalysisAdditional data acquired in recent weeks has left climate scientists gobsmacked and re-examining their assumptions of how the complex interplay between the ocean and the atmosphere could accelerate the effects of human-caused climate crisis. Climate scientists said the persistent marine heatwave has contributed to shockingly extreme temperatures downstream across most of the United States.The Prediction“There’s real concern right now that even if this marine heatwave didn’t persist, we’re heading into a bad wildfire season with poor water supply conditions,” said Larry O’Neill, an Oregon State University climatologist. “Our summer is going to be much warmer than normal.”