VIKING20X-JRA-short: daily to multi-decadal ocean dynamics under JRA55-do atmospheric forcing

VIKING20X-JRA-short (Biastoch et al., 2021) is part of a series of VIKING20X simulations under JRA55-do atmospheric forcing. It is based on a restart from a pre-spun experiment in 1980 (VIKING20X-CORE; see Biastoch et al., 2021) and integrated for the period 1980 to 2019 in the framework of the RACE–Synthesis: Regional Atlantic Circulation and Global Change ( https://race-synthese.de ).

The applied atmospheric forcing JRA55-do (Tsujino et al., 2020, http://doi.org/10.5194/gmd-13-3643-2020 ) builds on the Japanese reanalysis product JRA-55 with improvements through the implementation of satellite and several other reanalysis products.


Details of the Configuration:

- eddy-rich 1/20° nest using the two-way nesting technique Adaptive Grid Refinement In Fortran (AGRIF; http://doi.org/10.1016/j.cageo.2007.01.009 ) that covers the Atlantic Ocean from 33.5° S to ∼65° N embedded in a 1/4° resolution global grid

- initialization from a pre-spun experiment in 1980

- time step refinement factor 3 between host and nest

- momentum advection scheme in vector form with Hollingsworth correction, conserving both energy and enstrophy

- tracer advection as two-step flux corrected transport, total variance dissipation scheme

- linearized filtered free surface

- weak sea surface salinity restoring towards Levitus WOA98 (piston velocity 12.2 m/yr), suppressed under sea-ice

- thermodynamic, dynamic sea-ice model LIM2 ( https://doi.org/10.1029/97JC00480 ) with viscous-plastic rheology

- turbulent kinetic energy scheme

- bi-Laplacian lateral viscosity

- non-linear bottom friction


Note of advise on re-using the provided simulation output data

We recommend to only use the high-resolution simulation output data from the 1/20 degree nested region for any analysis (nest file names "1_VIKING20X.L46-KKG36107B_*.nc"). The simulation was designed to improve the understanding of specific key processes in the Atlantic Ocean and their effect on the large scale and inter-hemispheric circulation in the Atlantic.

The simulation results can only be interpreted in this context and are not necessarily applicable to other arbitrary research questions on ocean and climate dynamics. In particular, the output fields of the global simulation at coarser resolution (host file names "VIKING20X.L46-KKG36107B_*.nc") must be understood as an interactive boundary condition to the focus region of the nest and are here provided for completeness only. For questions in this regard we recommend to contact datamanagement@geomar.de and generally encourage potential users to reach out to us for clarification.


A detailed description of the configuration and experiments is given in Biastoch et al. (2021):

Biastoch, A., F. U. Schwarzkopf, K. Getzlaff, S. Rühs, T. Martin, M. Scheinert, T. Schulzki, P. Handmann, R. Hummels, and C. W. Böning, 2021, Regional Imprints of Changes in the Atlantic Meridional Overturning Circulation in the Eddy-rich Ocean Model VIKING20X, Ocean. Sci., 17, 1177–1211, http://doi.org/10.5194/os-17-1177-20 21

INSPIRE

Identification

File identifier
wdc-climate.de:3952968 XML
Hierarchy level
collection
Online resource
Resource identifier
code

VIKING20XJRAshort
code

doi:10.26050/WDCC/VIKING20XJRAshort
Metadata language

eng; USA
Encoding
Format

NetCDF
Projection
 

Classification of data and services

Coupled resource

Coupled resource
 
 

Classification of data and services

Coupled resource

Coupled resource
 
 

Keywords

Other keywords

Keywords

  • ATMOSPHERIC/OCEAN INDICATORS
Keywords

  • Atlantic Meridional Overturning Circulation
Keywords

  • NEMO3.6
Keywords

  • OCEAN CURRENTS
Keywords

  • OCEAN UPWELLING
Keywords

  • RACE
Keywords

  • THERMOHALINE CIRCULATION
Keywords

  • VIKING20X
Keywords

  • model-output
Keywords

  • ocean simulation
 
 

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Temporal reference

Temporal extent
Begin
1980-01-01
End
2019-12-31
Temporal extent
Date (Publication)
2024-03-07
 

Conformity

Conformity
Conformity
 

Conformity

Conformity
Conformity
 

Responsible organization (s)

Contact for the resource
Organisation name

GEOMAR Helmholtz Centre for Ocean Research Kiel
 

Responsible organization (s)

Contact for the resource
Organisation name

GEOMAR Helmholtz Centre for Ocean Research Kiel
 

Metadata information

Contact for the metadata
Organisation name

GEOMAR Helmholtz Centre for Ocean Research Kiel
Date stamp
2022-11-24T15:06:03
Metadata language

eng; USA
 
 

SDS

Conformance class 1: invocable

Access Point URL
Endpoint URL
Technical specification
 

Conformance class 2: interoperable

Access constraints

Limitation
 

Use constraints

Limitation
 

Responsible custodian

Contact for the resource
 
 
 

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