VALue of the RAPID-WATCH Climate Change programme array project (VALOR) Logo
Numerical data from the Global Ocean Physics Reanalysis UR025.4 (1989-2010) as part of the VALue of the RAPID-WATCH Climate Change programme array (VALOR) project
Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2013-06-27
DOI Publication Date: 2013-07-09
Download Stats: last 12 months

These data are the University of Reading (Reading, UK) UR025.4 reanalysis produced by the Earth System Science Centre, and are used to support the work of the NERC (Natural Environmental Research Council) RAPID-WATCH (Rapid Climate Change-Will the Atlantic Thermohaline Circulation halt?) VALOR (VALue of the RAPID-WATCH Climate Change programme array) project.

They consist of global ocean and sea ice fields, with coverage at 1/4 deg lat x 1/4 deg lon, on 75 vertical levels, for the period from 1989 to 2010. These variables include monthly means of Temperature, Salinity, Currents, Sea Surface Height and Sea Ice Parameters, forced by ERA-Interim atmospheric variables with Data Assimilation of in-situ T,S profiles and satellite SST, Sea Level Anomalies, Temperature and Salinity profiles and satellite Sea Ice Concentration using the UK Met Office FOAM system. 5-day data also exist for all variables and daily data for some upper ocean variables may be available from the provider.

These data were originally produced under the EU MyOcean project and have been validated against observations. They are also currently available through the MyOcean website.

Citable as:  Natural Environment Research Council; Zuo, H.; Valdivieso, M.; Lea, D.; Haines, K. (2013): Numerical data from the Global Ocean Physics Reanalysis UR025.4 (1989-2010) as part of the VALue of the RAPID-WATCH Climate Change programme array (VALOR) project. NCAS British Atmospheric Data Centre, 09 July 2013. doi:10.5285/4bcfa3a4-c7ec-4414-863d-caeceb21f16f.
Keywords:  VALOR, RAPID-Watch
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Data lineage:

Data were produced by the University of Reading partners of the VALOR project before preparation and delivery for archiving by the BADC.

Data Quality:
Not known.
File Format:
Data are netCDF formatted
Process overview
This dataset was generated by the computation detailed below.

University of Reading NEMO coupled ice-ocean model v3.2
This computation involved: Reading University Ocean Reanalysis Software deployed on Reading University computer. Reading University developed ocean reanalysis software which uses the NEMOv3.2 ocean model in configuration ORCA025_LIM (1/4 deg by 75 vertical levels). The model is forced with ECMWF ERA-Interim atmospheric reanalysis without corrections for radiation and precipitation and bulk fluxes calculated as in Large and Yeager (2004). The vertical grid has 75 levels with partial steps at the bottom. The data assimilation methodology is similar to what is currently employed in the UK Met Office operational FOAM - NEMO system (Storkey et al., 2010). It is an OI-type scheme with assimilation increments calculated using a first-guess-at-appropriate- time (FGAT) scheme every 5 days and introduced evenly over the period in an incremental analysis update (IAU) step. UR025.4 assimilates in situ and satellite-based SSTs, altimeter SLA from AVISO/CLS using the Rio et al. (2005) mean dynamic topography (MDT), in situ temperature and salinity profile observations obtained from the UK Met Office ENACT/ENSEMBLES (EN3_v2a_NoCWT_LevitusXBTMBT_ Corr) data set, which includes bias corrections for XBT and MDT data, and satellite-based sea ice concentrations from the EUMETSAT Ocean Sea Ice Satellite Application Facility (OSI-SAF).
Input Description
Output Description
Software Reference
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Temporal Range
Geographic Extent

-180.0000°     180.0000°
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