Dataset: Circum-Antartic Model: four simulation outputs

Name: NetCDF model output of 4 circum-Antartic model simulations covering the Antarctic Continental Shelf.
Published: 2023-02-07
Keywords: Antarctica, circulation model, ice shelf melt, dissolved Iron, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.887777.1

Spatial Extent: N:-53.823 E:180 S:-90 W:-180

Project:

Collaborative Research: Elucidating Environmental Controls of Productivity in Polynas and the Western Antarctic Peninsula (Western Antarctic Polynas)

Principal Investigator:

Michael Dinniman (Old Dominion University, ODU)

Co-Principal Investigator:

Kevin R. Arrigo (Stanford University)

Eileen E. Hofmann (Old Dominion University, ODU)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2023-02-07

Restricted:

Validated:

Yes

Current State:

Final no updates expected

NetCDF model output of 4 circum-Antartic model simulations covering the Antarctic Continental Shelf.

Abstract:

NetCDF model output of 4 circum-Antartic model simulations covering the Antarctic Continental Shelf.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2023-02-07	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.887777.1	2023-02-07

Description

NetCDF model output of the entire state of the surface layer, including simulated dFe dyes, of the portions of the circum-Antarctic model domain over and near the Antarctic continental shelf. Each file contains two five day temporal averages of the model state for the last two years of the model simulation (the portion analyzed in Dinniman et al., submitted). There are four simulations:

* 115: Base simulation (Base atmospheric forcing)
* 133: Winds simulation (Strengthened and poleward shifted winds)
* 137: Winds + Precip simulation (133 plus increased precipitation)
* 139: All simulation (137 plus increased atmospheric temperatures)

The previous grid file (so_grd.rtopo2.2.5km.nc.try16) is still valid for these simulations. (see related dataset: https://www.bco-dmo.org/dataset/782848).

Methods & Sampling

The 5 km horizontal resolution circum-Antarctic circulation model used in this study is an implementation of the Regional Ocean Modeling System. The model includes a dynamic sea-ice model and static ice shelves (including mechanical and thermodynamic interactions between the floating ice shelves and the water underneath). The domain extends northward from the continent across Drake Passage to South America and is north of the maximum winter sea ice extent. In depth descriptions of the model can be found in Dinniman et al., 2015 and Dinniman et al., 2020.

The results in this dataset only examine results over a portion of the model domain (including the entire Antarctic continental shelf), so the results are a spatial cutout of the entire domain. There are 4 simulations: Base simulation (Base atmospheric forcing), Winds simulation (Strengthened and poleward shifted winds), Winds + Precip simulation (winds simulation plus increased precipitation), (winds + precip simulation plus increased atmospheric temperatures). Additionally, the simulation are shorter in time that the related dataset (https://www.bco-dmo.org/dataset/782848). Further description of these model outputs can be found in Dinniman et al., 2022.

Each of the four model run datasets has 76 netCDF files that are 636MB each for a total of (4 * 76 * 636/1024) 189GB of storage.

Data Processing Description

BCO-DMO Processing notes:
* Added the model results as .zip data file to this dataset

Data Files

File

Antarctic dFe model dyes for Antarctic Continental Shelf
filename: Antarctic_dFe_model_dyes.zip

(ZIP Archive (ZIP), 88.30 GB)
MD5:202e60a69650f09200ad3e8d707fad82

Zip folder contains 304 files in total: 4 model runs in total, where each model run outputs 76 netcdf files. The model used in this study is the  circum-Antarctic circulation model which is an implementation of the Regional Ocean Modeling System (ROMS). 