Annual trends in sea-ice thickness, ice season length and net primary production. a) Modelled annual average ice thickness (blue line) versus modelled annual average net primary production (dotted green line); b) Modelled annual average ice season length (blue line) versus modelled cumulative net primary production, i.e., integrated over the corresponding ice season and throughout the study area (dotted green line). DOI: https://doi.org/10.1525/elementa.223.f13