Circum-Antarctic shoreward heat fluxes derived from eddy- and tide-resolving simulation
Model data used to quantify the roles of mean and transient flows in transporting heat across almost the entire Antarctic continental slope and shelf using an ocean/sea-ice model run at eddy- and tide-resolving (1/48 degree) horizontal resolution.
Simple
Identification info
- Date (Creation)
- 2017-12-15
- Date (Publication)
- 2017-12-18
- Citation identifier
-
doi:10.4226/77/5a37035ea15b2
- Title
- Information and documentation - Digital object identifier system
- Date (Publication)
- 2017-12-18
- Citation identifier
-
ISO 26324:2012
- Citation identifier
-
https://doi.org/10.4226/77/5a37035ea15b2
Principal investigator
Collaborator
- Status
- Completed
Principal investigator
Point of contact
- Topic category
-
- Oceans
Extent
Temporal extent
- Time period
- 2011-03-06 2012-11-15
Vertical element
- Minimum value
- 0
- Maximum value
- 7000
- Identifier
- EPSG::5715
- Name
- MSL depth
- NASA/GCMD Keywords, Version 8.5
- Keywords (Theme)
-
- vertical coordinate of center of cell
- vertical coordinate of face of cell
- Cell center separation along Z axis
- Cell face separation along Z axis
- vertical profile of reference density
- longitude East of center of grid cell
- longitude East of southwest corner of grid cell
- latitude North of center of grid cell
- latitude North of southwest corner of grid cell
- Cell center separation in X across western cell wall
- Cell face separation in X along southern cell wall
- Cell center separation in Y across southern cell wal
- Cell face separation in Y along western cell wall
- Model bathymetry
- cosine(alpha) relative to geographic direction at grid cell center
- sine(alpha) relative to geographic direction at grid cell center
- mask of tracer cell
- mask of v cell
- mask of u cell
- Elevation of bottom of lowest model grid cell at tracer points
- Elevation of bottom of lowest model grid cell at u-points
- Elevation of bottom of lowest model grid cell at v-points
- averaged zonal (relative to grid) velocity
- averaged merid. (relative to grid) velocity
- averaged vertical velocity
- averaged potential temperature
- averaged advective potential temperature flux due to u
- averaged advective potential temperature flux due to v
- averaged advective potential temperature flux due to w
- averaged salinity
- averaged advective salt flux due to u
- averaged advective salt due to v
- averaged advective salt flux due to w
- averaged of u^2
- averaged of v^2
- averaged of w^2
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Stewart, A., Klocker, A. (2017). Circum-Antarctic shoreward heat fluxes derived from eddy- and tide-resolving simulation. Institute for Marine and Antarctic Studies, University of Tasmania. doi:10.4226/77/5a37035ea15b2
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Stewart, A. L., Klocker, A., & Menemenlis, D. (2018). Circum‐Antarctic shoreward heat transport derived from an eddy‐ and tide‐resolving simulation. Geophysical Research Letters, 45, 834–845. https://doi.org/10.1002/2017GL075677
Content Information
- Content type
- Physical measurement
- Name
-
vertical coordinate of center of cell
- Name
-
rc
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
vertical coordinate of face of cell
- Name
-
rf
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Cell center separation along Z axis
- Name
-
drc
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Cell face separation along Z axis
- Name
-
drf
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
vertical profile of reference density
- Name
-
rho_ref
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UKMC
- Name
- Kilograms per cubic metre
- Name
-
longitude East of center of grid cell
- Name
-
xc
- Name
- degree
- Name
-
longitude East of southwest corner of grid cell
- Name
-
xg
- Name
- degree
- Name
-
latitude North of center of grid cell
- Name
-
yc
- Name
- degree
- Name
-
latitude North of southwest corner of grid cell
- Name
-
yg
- Name
- degree
- Name
-
Cell center separation in X across western cell wall
- Name
-
dxc
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Cell face separation in X along southern cell wall
- Name
-
dxg
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Cell center separation in Y across southern cell wal
- Name
-
dyc
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Cell face separation in Y along western cell wall
- Name
-
dyg
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Name
-
Model bathymetry
- Name
-
depth
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/ULAA
- Name
- Metres
- Description
- alpha = angle of model uVel direction vs geographical East = angle of model vVel direction vs geographical North(AngleCS*uVelc - AngleSN*vVelc, AngleSN*uVelc + AngleCN*vVelc) rotates model velocity to geographical coordinates, where(uVelc,vVelc) is model velocity vector at center of grid cell
- Name
-
cosine(alpha) relative to geographic direction at grid cell center
- Name
-
AngleCS
- Name
- n/a
- Description
- alpha = angle of model uVel direction vs geographical East = angle of model vVel direction vs geographical North(AngleCS*uVelc - AngleSN*vVelc, AngleSN*uVelc + AngleCN*vVelc) rotates model velocity to geographical coordinates, where(uVelc,vVelc) is model velocity vector at center of grid cell
- Name
-
sine(alpha) relative to geographic direction at grid cell center
- Name
-
AngleSN
- Name
- n/a
- Description
- (0 is land, >0 is wet)
- Name
-
mask of tracer cell
- Name
-
hFacC
- Name
- n/a
- Description
- (0 is land, >0 is wet)
- Name
-
mask of v cell
- Name
-
hFacS
- Name
- n/a
- Description
- (0 is land, >0 is wet)
- Name
-
mask of u cell
- Name
-
hFacW
- Name
- n/a
- Name
-
Elevation of bottom of lowest model grid cell at tracer points
- Name
-
rLowC
- Name
- n/a
- Name
-
Elevation of bottom of lowest model grid cell at u-points
- Name
-
rLowW
- Name
- n/a
- Name
-
Elevation of bottom of lowest model grid cell at v-points
- Name
-
rLowS
- Name
- n/a
- Description
- >0 from West to East
- Name
-
averaged zonal (relative to grid) velocity
- Name
-
u_avg
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UVAA
- Name
- Metres per second
- Description
- >0 from South to North
- Name
-
averaged merid. (relative to grid) velocity
- Name
-
v_avg
- Name
- m/s
- Name
-
averaged vertical velocity
- Name
-
w_avg
- Name
- m/s
- Name
-
averaged potential temperature
- Name
-
t_avg
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPAA
- Name
- Degrees Celsius
- Name
-
averaged advective potential temperature flux due to u
- Name
-
ut_avg
- Name
- deg C m/s
- Name
-
averaged advective potential temperature flux due to v
- Name
-
vt_avg
- Name
- deg C m/s
- Name
-
averaged advective potential temperature flux due to w
- Name
-
wt_avg
- Name
- deg C m/s
- Name
-
averaged salinity
- Name
-
s_avg
- Name
- g/kg
- Name
-
averaged advective salt flux due to u
- Name
-
us_avg
- Name
- g/kg m/s
- Name
-
averaged advective salt due to v
- Name
-
vs_avg
- Name
- g/kg m/s
- Name
-
averaged advective salt flux due to w
- Name
-
ws_avg
- Name
- g/kg m/s
- Name
-
averaged of u^2
- Name
-
usq_avg
- Name
- m^2/s^2
- Name
-
averaged of v^2
- Name
-
vsq_avg
- Name
- m^2/s^2
- Name
-
averaged of w^2
- Name
-
wsq_avg
- Name
- m^2/s^2
Distribution Information
- Distribution format
-
-
Matlab files (.mat)
-
Matlab files (.mat)
Resource lineage
- Statement
- The LLC_4320 simulation was conducted using the MIT general circulation model [Marshall et al., 1997a,b] on a global Latitude-Longitude-Cap (LLC) grid [Forget et al., 2015] with 1/48 degree horizontal grid spacing and 90 vertical levels. The horizontal grid spacing is less than 1 km over the entire Antarctic continental shelf and slope, with the exception of the tip of the Antarctic Peninsula, which is sufficient to simulate shoreward heat transfer by eddies [St-Laurent et al., 2013; Stewart and Thompson, 2015b]. The model includes the 16 largest-amplitude tidal components globally and partially resolves the internal wave spectrum [Rocha et al., 2016] and thus cross-slope excursions associated with baroclinic tides [Padman et al., 2009]. The LLC_4320 simulation is not directly constrained by observational data, but is a high-resolution continuation of the ECCO2 0.14 degree reanalysis product. The simulation spans September 2011–October 2012, and derives surface fluxes from ECMWF 1/6 degree operational analysis [ECMWF, 2011] combined with an annual climatology of continental runoff [Fekete et al., 2002]. An identically configured simulation was run using 1/24 degree horizontal grid spacing, spanning January 2011 – April 2013, and is referred to as LLC_2160. The model configuration files to understand the model grid layout, integration procedure, parameters etc can be found at http://wwwcvs.mitgcm.org/viewvc/MITgcm/MITgcm_contrib/llc_hires/llc_4320/. The data are stored in .mat files separated by LLC face number (1, 2, 4 or 5), grid resolution (LLC2160 vs LLC4320), and averaging procedure (averaging all 6-hour snapshots together, '_6hsnapshots', or first averaging 6-hour snapshots into days and then averaging the days, '_dailyavg6h'). The LLC2160 model output is averaged from 03/06/2011 to 04/22/2013 (model time step 92160 to 1586400), while the LLC4320 output is averaged from 09/12/2011 to 11/15/2012 (model time step 10368 to 1495008).
- Hierarchy level
- Model
Resource lineage
- Statement
- Each file contains the MITgcm grid vectors and time-averaged products of model output variables. Where necessary, the LLC grids have been rotated so that the x-coordinate points east, or approximately east, while the y-coordinate points north, or approximately north. For products between velocities and tracers, the tracers were interpolated linearly onto velocity points before the product was taken.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
-
99ccd395-af52-4a36-bca4-edd7991435bd
- Language
- English
- Character encoding
- UTF8
Author
Publisher
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/99ccd395-af52-4a36-bca4-edd7991435bd
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-12-02T17:01:26
- Date info (Revision)
- 2020-12-02T17:01:26
Metadata standard
- Title
- ISO 19115-3:2018