Norwegian Institute of Marine Research

A compilation of global bio-optical in situ data for ocean-colour satellite applications – version four

Abstract. A global in situ dataset for validation of satellite products from the ESA Ocean Colour Climate Change Initiative (OC-CCI) is presented. This version of the compilation, with data starting in 1996, extends to 2025, which is important for the validation of recent algorit...

Eddy kinetic energy and energy conversion rates along the Atlantic Water boundary current north of Svalbard

Abstract. On the continental slope north of Svalbard, the boundary current carrying Atlantic Water (AW) loses heat as it flows eastward. This cooling cannot be fully attributed to atmospheric heat loss or turbulent mixing. Lateral exchange, potentially linked to mesoscale activit...

A new reproducible, minimally invasive fin-clamp enabling biologging and animal-borne video studies of juvenile sharks

Abstract Background Fine-scale studies of juvenile shark ecology remain limited because existing tags are often too large or invasive to be deployed on sharks <2 m length. Consequently, high-resolution behavioral and physiological data from early life stages are scarce, despit...

The value of electronic tagging and tracking studies for understanding fish–hypoxia interactions

Abstract Objective Hypoxia (i.e., low dissolved oxygen availability) is a natural phenomenon but can also be induced by human activities (e.g., nutrient enrichment from runoff). Given that dissolved oxygen is essential for aquatic life, periods of hypoxia tend to have negative co...