THE INFLUENCE OF SEA ICE ON PRIMARY PRODUCTION IN THE SOUTHERN OCEAN: A SATELLITE PERSPECTIVE

Changes in Arctic and Antarctic sea-ice properties and processes

Influence of oceanic mixing on sea ice net community production in the Canadian Arctic

Turbulence-driven nutrient supply has the potential to shape bottom sea ice microbial communities, affecting the balance of O2 uptake and release which defines the net community production (NCP) of the ice. This study contrasts sea ice NCP at two sites with comparatively high and low under-ice turbulent conditions. The...

Understanding upper ocean zooplankton variability in the Indian Ocean using observations and CMIP6 models

Changes in zooplankton biomass and community composition in a warming Indian Ocean (IO) may have cascading ecosystem impacts, affecting nutrient cycling, water quality, and fish stocks. This study investigates the spatio-temporal variability of upper ocean zooplankton concentration across the IO. Zooplankton exhibits p...

Long-term stability of the North Water Polynya and emerging productivity hotspots driven by sea-ice arch dynamics in Nares Strait

Nares Strait, at the southern edge of the Last Ice Area, is a key ecological gateway where seasonal sea-ice arches modulate ice export, stratification and light availability, shaping the timing and intensity of phytoplankton blooms. Using two decades (2003–2023) of satellite sea-ice observations combined with depth...

Ocean changes and the impacts in the Polar Regions

Covering about 20 % of the global ocean, the polar ocean areas are among the most sensitive regions of the Earth climate system, where today climate change is reshaping processes that influence global circulation, sea level, and climate far beyond the poles. Here, we develop an ocean narrative that integrates physical,...

Effects of sea ice model characteristics on Arctic marine primary production

The Arctic environment is rapidly changing and drastic declines in sea ice extent and thickness have been observed over the past decades. The thinning of the ice pack affects its dynamics and makes it more susceptible to form fractal features such as leads and ridges at scales of meters to kilometres, as well as larger...