Table 2 Environmental variables used as predictors in the habitat suitability model.
Abbre-viation | Description | Unit | Spatial resolution | Temporal resolution | Data source/calculation method |
|---|---|---|---|---|---|
BAT | Bathymetry | m | 0.0083° | Static | Extracted from GEBCO 2014 Grid, https://www.gebco.net/ |
SLP | Slope | ° | 0.0083° | Static | Derived from BAT calculating the slope with the “terrain” function in the “raster” R package |
SIC | Sea ice area fraction | 1 | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
EDGE | Distance to ice edge | km | 0.083° | Daily | Derived from SIC after calculating distance to sea ice concentration > 15%, using the “gridDistance” function in “raster” R package |
SIT | Sea ice thickness | m | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
SST | Sea surface temperature | °C | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
SSTg | Sea surface temperature gradient | ° | 0.083° | Daily | Derived from SST calculating the slope with the “terrain” function in the “raster” R package |
SAL | Salinity | PSU | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
SALg | Salinity gradient | ° | 0.083° | Daily | Derived from SAL calculating the slope with the “terrain” function in the “raster” R package |
SSH | Sea surface height | m | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
EKE | Eddy kinetic energy | m2 s-2 | 0.083° | Daily | Derived from sea water velocity extracted from Global Ocean Sea Physical Analysis and Forecasting Product as EKE = 0.5(U2 + V2) |
CHL | Chlorophyll a concentration | mg m-3 | 0.25° | Daily | Extracted from the Global Biogeochemical Analysis and Forecasting Product https://marine.copernicus.eu/ |
MLD | Mixed layer depth | m | 0.083° | Daily | Extracted from the Global Ocean Sea Physical Analysis and Forecasting Product https://marine.copernicus.eu/ |
