Ventilation of the North Atlantic is Weakening
GEOMAR Helmholtz Centre for Ocean Research Kiel
Published: 16 January 2026
A GEOMAR study published in Nature Communications shows deep water renewal in the North Atlantic has slowed over three decades, with water masses aging significantly since the 1990s, signaling anthropogenic climate change.
Keywords: ocean circulation, North Atlantic, deep water formation, climate change, ocean ventilation, AMOC, carbon uptake
Time Series in the Mediterranean Sea
GEOMAR Helmholtz Centre for Ocean Research Kiel
Published: 13 January 2026
GEOMAR-led Expedition M216 aboard RV METEOR set sail to assess the Mediterranean Sea, collecting data on temperature, salinity, nutrients and trace gases as part of a time series last conducted in 2018.
Keywords: Mediterranean Sea, oceanographic expedition, time series, ocean acidification, water masses, CTD, climate monitoring
New Study Reveals Global Ocean Darkening Threatens Marine Life
Plymouth Marine Laboratory
Published: 27 May 2025
A PML-co-led study found that over 21% of the global ocean has darkened over the past two decades, shrinking vital photic zones that support over 90% of marine life and drive oxygen production and carbon cycling.
Keywords: ocean darkening, photic zone, marine ecology, satellite data, phytoplankton, light attenuation, climate change
