Numerical dispersion scenarios
A hierarchy of three-dimensional coupled ice-ocean circulation models is applied to study the major pathways for radioactive contaminant transport in the Arctic. The circulation models cover three different spatial scales:
| No. | scale | code | grid | domain |
| 1 | local | HAMSOM | 185.2 m | Abrasimov Bay, Novaya Semlya |
| 2 | regional | HAMSOM | 9.4 km | Kara Sea |
| 3 | regional | HAMSOM | 25 km | Norwegian Sea, Barents Sea and Kara Sea |
| 4 | large | OPYC | 50 km | Arctic Ocean, GIN Sea, North Atlantic |
HAMSOM = Hamburg Shelf-Ocean Model
OPYC = Ocean Isopycnic General Circulation Model
The models are used to provide the essential information on the sesonality of ocean currents, stratification, ice formation and ice transport on all scales. Endpoints are circulation patterns on different time scales that serve as source functions for further transport modelling of dissolved substances.