Available model simulations (Currently available only in English).
Our group works on model development of Antarctic regional seas (e.g., Amundsen Sea, Bellingshausen Sea, Ross Sea, and along the East Antarctic coast) using MITgcm and FESOM, achieving good model-data agreement with existing observations. To further improve model-data agreement, we combined sparsely available observations with best-possible numerical descriptions of ocean circulation. The Green’s functions and adjoint methods are two different approaches developed and implemented for global-ocean model-data synthesis by the Estimating the Circulation and Climate of the Ocean (ECCO) project. Here are the table summarizing existing model configurations.
Below, we provide general information about how to rerun these simulations and a few detailed explanations on widely used model outputs.
High-resolution Amundsen-Bellingshausen Sea regional model (3-4 km)
Nakayama et al., 2018 develops high-resolution Amundsen-Bellingshausen Sea simulations and suggest that the observed warming on the Amundsen Sea shelf is modulated by large-scale ocean circulation. Model data evaluation for the Amundsen Sea was conducted in Nakayama et al., 2017 in the lower resolution configuration. Hyogo et al., in press further updates model parameters for achieving better model dat agreement especially for the Bellingshausen Sea.
Main publications
Nakayama et al., 2017, Nakayama et al., 2018
Other publications using this model output
Dundas et al., in prep, Hyogo et al., in prep
run260_google_site_ver2.mp4Super-high-resolution Pine Island Glacier (200 m)
The highest resolution simulation is available for the realistic Amundsen Sea, capturing complex ice shelf geometry. This simulation is evaluated extensively by comparing with existing oceanographic (CTD, mooring, etc) and glaciological (ApRES, melt rate, etc) observations (Nakayama et al., 2019). Recent updates include subglacial freshwater discharge from Pine Island Glacier (Nakayama et al., 2021c).
Main publications
Nakayama et al., 2019, Nakayama et al., 2021c
Other publications using this model output
Dotto et al., in prep, Shrestha et al., in prep, Hirata et al., in prep
PIG_high_ver2.mp4East Antarctic simulation including Shackleton, Totten, and Mertz ice shelves
The MITgcm simulation for East Antarctic domain. This simulation seems to show good agreement with observations in terms of the interannual variability of Totten ice shelf melt rate.
Main publications
Nakayama et al., 2021b
Other publications using this model output
Sup_Movie_ver1.mp4Cape Darnley (idealized site to test model capability of dense shelf water outflow and development of BBL).
The current configuration simulates sea ice formation, dense shelf water descent, and AABW formation in good agreement with observations. Cape Darnley is one of the ideal sites to test the model capability of dense shelf water outflow and formation of Antarctic Bottom Water. Currently, high-res Cape Darnley configuration (500 m) is under development.
Main publications
Mensah et al., 2021
Other publications using this model output
None
Simulated and satellite-based estimated sea ice production in the Cape Darnley Polynya.