A dynamic model is constructed for interactive silicon, nitrogen, sulfur processing in and
below Arctic sea ice, by ecosystems residing in the lower few centimeters of the distributed
pack. A biogeochemically active bottom layer supporting sources/sinks for the pennate
diatoms is appended to thickness categories of a global sea ice code. Nutrients transfer from
the ocean mixed layer to drive algal growth, while sulfur metabolites are reinjected from the
ice interface. Freeze, flux, flush and melt processes are linked to multielement geocycling for …

A dynamic model is constructed for interactive silicon, nitrogen, sulfur processing in and
below Arctic sea ice, by ecosystems residing primarily in the lower few centimeters of the
distributed pack. A biogeochemically active bottom layer supporting sources/sinks for the
pennate diatoms is appended to thickness categories of the global CICE code. Nutrients
transfer from the ocean mixed layer to drive algal growth, while sulfur metabolites are
reinjected from the ice interface. Freeze, flux, flush and melt processes are linked to multi …