Regional Ocean Modeling System (ROMS) output for an idealized East Greenland fjord sensitivity study: physical and biogeochemical fields

• Main Author: Oliver, Hilde
• Format: Dataset
• Language: English
• Published: Arctic Data Center 2020
• Subjects: fjord; biogeochemistry; physical oceanography; buoyant plume; ocean model; Greenland; glacial meltwater; East Greenland; greenlandic
• Online Access: https://dx.doi.org/10.18739/a21v5bf0z; https://arcticdata.io/catalog/view/doi:10.18739/A21V5BF0Z

We use a 3-dimensional, terrain-following, hydrostatic Regional Ocean Modeling System (ROMS) (Haidvogel et al., 2008) to simulate processes within an idealized fjord with features (dimensions, water mass properties, and subglacial discharge rates) similar to those observed for many south east Greenlandic systems. To simulate the biological drawdown of nutrients within the fjord, we add a biogeochemical model with two nutrient types: nitrate and silicate. To test the sensitivity of nutrient export from the fjord under different fjord geometries, forcing conditions, and initial vertical profiles of temperature, salinity, and nutrients, we run the model under 21 different configurations, shared as NetCDF files in this dataset. All time fields are calculated from 12.42-hr-average output to remove the M2 tidal influence on outflow velocities. # Characteristic 1 Base case 2 Narrower 3 Wider 4 Shorter 5 Longer 6 Shallower sill 7 No sill 8 100 m deeper grounding depth 9 50 m deeper grounding depth 10 100 m shallower grounding depth 11 50 m shallower Atlantic Water/Polar Water interface 12 No tides 13 Double discharge 14 No basal melt 15 Shelf forcing 16 Turbid 17 Subglacial nutrients 18 Land-terminating 19 Double phytoplankton max growth rates 20 Double max zooplankton grazing rate 21 Lower (½x) phytoplankton light attenuation coefficient