CLIVAR

CLIMATE VARIABILITY AND PREDICTABILITY

International CLIVAR Project Office
National Oceanography Centre
European Way
Southampton, SO14 3ZH, UK
Phone: +44-2380 596777
Fax: +44-2380 596204
Email: icpo@noc.soton.ac.uk

CLIVAR Ocean Synthesis Directory

CLIVAR Data | Synthesis Efforts | Intercomparison project

Ocean Synthesis/Reanalysis Efforts

Project Name	Project Goals (*)	Sponsoring Agencies	Model	Domain	Resolution	Data assimilated	Assimilation method	Forcing and relaxation used	Product availability
AWI
BLUElink	D	BoM, CSIRO Royal Australian Navy	MOM4 + Chen hybrid mixed layer	Global	Vertical 47 levels	Satellite, SST, SSH, Argo, XBT, TAO	Simplified ensemble Kalman Filter	No global constraints	1992-2006
BLUElink	D	BoM, CSIRO Royal Australian Navy	MOM4 + Chen hybrid mixed layer	Australasian region	Horizontal 0.1°x0.1°	Satellite, SST, SSH, Argo, XBT, TAO	Simplified ensemble Kalman Filter	No global constraints
CERFACS	A,B	CNES, Météo France CERFACS	OPA8.2	Global	Horizontal 2°x2° (~0.5° meridional at the tropics) Vertical 31 levels	Temperature profiles from ENACT dataset, SST from Reynolds (from 1982) and HadISST (before 1982) Salinity profiles from ENACT dataset	Multivariate 3D-Var (OPAVAR) for T & S profiles	Forcing daily ERA40 fluxes, with bias-corrected P-E Relaxation SST relaxation (-200W/m² k) no SS relaxation 3D Levitus damping (3 year time-scale)	1962-2001
DePreSys	A,B	DEFRA		Global	Horizontal 1.25°x1.25° Vertical 20 levels, 5 in top 50m	Temperature subsurface data from bottles MBTs, XBTs, CTDs, buoys ARGO WOD01 for the period 1950-55 ENACT dataset from 1956 onwards (additional obs and quality control) SST obs from HadISST Salinity subsurface data from bottles MBTs, XBTs, CTDs, buoys ARGO WOD01 for the period 1950-55 ENACT dataset from 1956 onwards (additional obs and quality control)	Statistical optimal interpolation Covariances computed from a transient integration of HadCM3 (from 1950 to 1999)		1950-present
ECMWF Ocean ReAnalysis (ORA)	A,B	ECMWF	HOPE	Global	Horizontal 1°x1° (equatorial refinement)	Temperature temperature profiles from Argo and XBT, CTD Salinity profiles from Argo and XBT, CTD Altimetry AVISO			1959-2006
ECCO-GODAE MIT/AER		NOPP (NASA, NOAA, NSF)	MITgcm	Quasi-global	Four different configurationss v2.xx 1°x1°, 23 levels; v3.xx as v2 but with sea ice; v4. 1°x1° (1/3° equator), 43 level, global LLC grid with sea ice. SOSE 1/6°, 43 levels	All alt. SLA,;GRACE- based MDT; Gouretski/Koltermann clim., all Argo, WOCE hydrog., SEaOS elephant seal; NCEP reanal.; Reynolds /TMI/AMSR-E SST			1992-2004
ECCO-JPL	A,B,C		MITgcm and MOM4	Quasi-global	Horizontal 1°x1° Vertical 50 levels, 10 in top 100m	Temperature temperature profiles from Argo and XBT, CTD Altimetry	Kalman filter and RTS smoother		1993-present
ECCO-SIO					1°				1992-2002
ECCO2	A,C,E	NASA (MAP)	MITgcm	Global	Horizontal 18 x 18 km Vertical 50 levels, 10 in top 100m		Green's functions	Estimated via assimilation	1992-present
ENACT	A,B	ENACT consortium EU FP5		Global	1°				1962-2006
EN2/EN3 ObjA	A,B	EU FP5/FP6, UK Met Office	No dynamical model	Global	Analysis grid Horizontal 1.25°x1.25° (meridional spacing decreasing to ~0.3° near the equator) Vertical 40 levels Product grid Horizontal 1°x1° Vertical 31 levels	Subsurface temperature and salinity observational data. (Met Office EN2 and EN3 in situ datasets)	Optimal interpolation	No forcing. Relaxation Relaxes towards climatology in the absence of data	EN2 2005-2006
EN2/EN3 ObjA	A,B	EU FP5/FP6, UK Met Office	No dynamical model	Global			Optimal interpolation		EN3 1950-2006
FNMOC/GODAE				Quasi-global
FOAM	D	British Royal Navy	UM	Global	Horizontal 1°x1° Vertical 20 levels				2001-present
				North Atlantic	Horizontal 1/9°x1/9° Vertical 20 levels				pre-2003
				Mediterranean Sea	Horizontal 1/9°x1/9° Vertical 20 levels
GECCO-50 years	A,C		MITgcm	Quasi-global	Horizontal 1°x1° Vertical 23 levels	CTD, MBT/XBT, Argo, TOGA/TAO,T/P-ERS- ENVISAT,Jason, AMSR/E/TMI SST, Quicksact, mean surface drifter velocity, GRACE SSH, Levitus (1994) NCEP RA1			1950-2000
GFDL				Global					1960-2006
GloSea	A,B	EU FP5, UK Met Office	GloSea OGCM	Global	Analysis grid Horizontal 1.25°x1.25° (meridional spacing decreasing to ~0.3° near the equator) Vertical 40 levels Product grid Horizontal 1°x1° Vertical 31 levels	EN2 subsurface in situ temperature and salinity observational data	Optimal interpolation including vertical adjustment of S profile from T assimilation	Forcing daily ERA40 fluxes with corrected precipitation Relaxation SST relaxed to HadISST up to 1982 and Reynolds SST OIv2 from 1982 (approx 3 day timescale) subsurface (all gridpoints, all levels) T and S relaxation (3 years timescale) towards running-3-monthly Levitus climatology	1962-1998
GMAO				Quasi-global	1/3° meridional 5/8° zonal				1993-present
HYCOM				Global					1993-present
INGV	A,B		OPA8.2	Global	Horizontal 2°x2° (~0.5° meridional at the tropics) Vertical 31 levels	In situ T and S profiles from ENACT and ENSEMBLES datastes until december 2005. Coriolis data after this date.	Reduced Order Multivarite OI with bivariate T and S EOFs	Forcing daily ERA40 fluxes until august 2002, operational ECMWF fluxes after this date Relaxation SST relaxed to Reynolds (strong relaxation). No SSS relaxation. 3D T ans S relaxation (3 year timescale) toward Levitus	1962-present
K-7	A,B	MEXT	MOMv3	Quasi-global	Horizontal 1°x1° Vertical 36 levels, 10m res.in top 50m	Temperature data from FNMOC, Argo climatology from WOA98 OISST Salinity data from FNMOC, Argo climatology from WOA98 Altimetry Topex/POSEIDON	4D-VAR method controlling the initial conditions and 10daily air-sea fluxes (heat, fresh water, and momentum fluxes)	Forcing 10daily forcing for first guess: momentum, sensible heat , latent heat, long-wave radiative, and fresh water fluxes from NCEP2 reanalysis data, shortwave from ISCCP data. Relaxation T,S below 2000m are relaxed to WOD98 climatology.	1990-2000
MERCATOR-2	A,B	CNES, IFREMER Météo France SHOM, CNRS, IRD	OPA8.1	North Atlantic	Horizontal 1/3°x1/3° Vertical 43 levels	SLA, SST, T&S profiles	3D OI with multivariate 1D EOFs	Forcing ERA40, daily, bulk formulation Relaxation None	1993-2001
MERCATOR-2	A,B	CNES, IFREMER Météo France SHOM, CNRS, IRD	OPA8.2	Global	Horizontal 2°x2° (~0.5° meridional at the tropics) Vertical 31 levels	SLA, SST, T&S profiles	Singular Evolutive Extended Kalman (SEEK) filter 3D time evolutive covariances	Forcing ERA40, daily, bulk formulation Relaxation SST relaxed to Reynolds SST OIv2 (weak relax.) SSS relaxed to Levitus monthly clim. (weak relax.). 3D T&S relaxation (3 years timescale) towards Levitus.	1993-2001
MERCATOR-3	A,B	CNES, IFREMER Météo France SHOM, CNRS, IRD	OPA8.2	Global	Horizontal 2°x2° (~0.5° meridional at the tropics) Vertical 31 levels	SLA, SST, T&S profiles	3D-VAR (OPAVAR) 3D multivariate covariances	Forcing ERA40, daily, bulk formulation Relaxation SST relaxed to Reynolds SST OIv2 (strong relax.) no SSS relaxation. 3D T&S relaxation (3 years timescale) towards Levitus.	1993-2001
MOVE/MRI.COM	A,B	JMA		Quasi-global	1°				1949-2005
NCEP/GODAS	B	NOAA	MOMv3	Quasi-global	Horizontal 1°x1° (1/3° meridional at the tropics) Vertical 40 levels, 10m res.in top 200m	Temperature XBTs and TAO/Triton/PIRATA, Argo Salinity synthetic based on T(z) and local TS-correlation Altimetry Jason-1 altimery		Forcing Momentum, shortwave, longwave, sensible heat, latent heat, P-E fluxes from the NCEP Reanalysis 2 Relaxation surface temperature to Reynolds' weekly SST OI, surface salinity to monthly Levitus climatological SSS	1980-present
POAMA	A,B	BoM, CSIRO	ACOM2 (based on MOM2)	Global	Horizontal 2° (0.5° meridional at the tropics, 1.5° at high latitudes) Vertical 27 levels, 15m top layer	In situ temperature and salinity profiles from the ENACT dataset	Multi-variate ensemble OI with time evolving ensemble covariances (pseudo EnKF)	Forcing ERA40 6 hourly stress, heat and fresh water. Relaxation Strong SST relaxation (3 days timescale) to Reynolds. Surface salinity relaxed to Levitus (30 days).	1980-2006
SODA 2.0.2	A,B		POP2.x	Global	Horizontal 0.25° on average (0.25°x0.4° tropics) Vertical 27 levels, 15m top layer	WOD05 T&S, MBTs, XBTs, CTDs, TAO, Pirata, Argo, satellite SST, altimetry, GPCC rainfall			1958-2004
(*) Coding used for Project goals A - Reconstruction of the historical record B - Initialization of Seasonal-Interannual Forecasting C - Dynamical estimates of WOCE era D - Operational mesoscale forecasting E - Other (see project webiste for more details)