Cuts to US ocean programme will hinder monitoring of El Niño and AMOC
Scientists warn that the Trump administration's push to dismantle a vital network of ocean-sensing instruments will stymie crucial weather and climate monitoring in the Pacific and Atlantic
Scientists warn that the Trump administration's push to dismantle a vital network of ocean-sensing instruments will stymie crucial weather and climate
Read Full Story at New Scientist →Why This Matters
The dismantling of the U.S. ocean monitoring network threatens to blindside global climate science, leaving gaping holes in long-term datasets that underpin weather prediction models. Without these instruments, forecasts for El Niño and the Atlantic Meridional Overturning Circulation (AMOC) could lose up to a decade of critical observations, worsening the "forecast gap" that already complicates disaster preparedness and resource allocation.
Background Context
Established in the 1980s, the Tropical Atmosphere Ocean (TAO) array—later expanded into the TAO/TRITON system—was a Cold War-era collaboration that evolved into the backbone of Pacific climate monitoring. Its sensors, maintained by NOAA and international partners, have provided uninterrupted data for decades, but funding instability and political shifts have repeatedly threatened its survival, including during previous budget battles.
What Happens Next
NOAA’s plan to decommission the array by 2025 will force scientists to rely on intermittent satellite data and regional models, which lack the resolution to capture fine-scale ocean-atmosphere interactions. The void could delay warnings for phenomena like the 2015-16 "Godzilla" El Niño, leaving coastal communities and fisheries with less time to adapt. Meanwhile, European and Japanese monitoring systems may partially compensate, but no single network can fully replace the TAO/TRITON’s role.
Bigger Picture
This move reflects a broader trend of short-term budget cuts clashing with long-term climate resilience, mirroring similar reductions in Arctic ice monitoring and wildfire prediction systems. As extreme weather events intensify, the policy choice to abandon these tools risks normalizing a "monitoring deficit" that could haunt future generations, much like the dismantling of U.S. weather buoys in the 1990s did for hurricane tracking.
