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Abstract

Synthesis/Analysis: Ocean Data Assimilation SystemOur 4D-VAR data assimilation system is developed by the MEXT K-7 project. The Ocean General Circulation Model is version 3 of the GFDL Modular Ocean Model (MOM3), which isequipped with several sophisticated schemes; e.g., the nonlocal K Profile Parameterization (KPP) for mixed layer physics, the Gent and McWilliams (GM) scheme for isopycnal mixing, andquicker advection scheme. The horizontal resolution is 1o in both latitude and longitude, with 36 vertical levels spaced from 10 m near the sea surface to 400 m at the bottom. This model is better able to reproduce ocean circulation processes and is expected to form a platform suitable for the use of the 4D-VAR adjoint model.The assimilated elements in this study are temperature and salinity from the World OceanDatabase 2001 (WOD01), Fleet Numerical Meteorology and Oceanography Center (FNMOC)dataset, Reynolds SST, OISST values, and Argo float data from the Coriolis Data Center, andsea-surface dynamic-height anomaly data derived from TOPEX/Poseidon altimetry. In addition, the climatologies of the World Ocean Database 1998 (WOD98) were used as background data for regions without observational coverage. All observational data were averaged onto 1o by 1o bins and then compiled as series of 10-day means for the surface data and monthly means for the subsurface data. The assimilation window is 16 years during 1991-2006.

Data Set Citation

Dataset Creator
Nozomi Sugiura, Shuhei Masuda
Dataset Title
(This dataset is not opened. New dataset is opened at the following HP) Estimated State of Global Ocean for Climate Research
Dataset Release Date
2010-11-01
Other Citation Details
Please cite as: Masuda, S., T. Awaji, T. Toyoda, Y. Shikama, and Y. Ishikawa (2009), Temporal evolution of the equatorial thermocline associated with the 1991-2006 ENSO, J. Geophys. Res., 114, C03015, doi: https://doi.org/10.1029/2008JC004953 .

Personnel

Role
DIF AUTHOR
Contact
dmo@jamstec.go.jp (dmo@jamstec.go.jp)
Role
TECHNICAL CONTACT
Contact
dmo@jamstec.go.jp (dmo@jamstec.go.jp)

Keyword List

ISO Topic Category
GEOSCIENTIFIC INFORMATION
OCEANS
Parameter
EARTH SCIENCE>OCEANS>OCEAN TEMPERATURE>POTENTIAL TEMPERATURE
EARTH SCIENCE>OCEANS>SALINITY/DENSITY>SALINITY
EARTH SCIENCE>OCEANS>OCEAN CIRCULATION>OCEAN CURRENTS
Platform
MODELS
GCM>General Circulation Model
Other
4D-VAR Ocean Data Assimilation
JAMSTEC

Start Date - End Date

  • 1980-01-01 - 2006-12-31

Bounding Rectangle

South Bound
-75
North Bound
80
West Bound
-180
East Bound
180

Location

GEOGRAPHIC REGION>GLOBAL OCEAN

Data Resolution

Latitude Resolution
1 degree
Longitude Resolution
1 degree
Vertical Resolution
36 levels

Project

Short Name
DIAS
Long Name
Data Integration and Analysis System

Access Constraints

Please contact to the TECHNICAL CONTACT for the dataset.

Language

ENGLISH
JAPANESE

Originating Center

JAMSTEC

Organization

Organization Type
ORIGINATOR
Organization Name
Short Name
JAMSTEC
Long Name
Japan Agency for Marine-Earth Science and Technology
Personnel
Role
DATA CENTER CONTACT
Contact
dmo@jamstec.go.jp (dmo@jamstec.go.jp)

Related URL

Description
Estimated State of Global Ocean for Climate Research

Last Metadata Revision Date

2022-11-18