BGS Hosted Metadata
ECMWF ERA5: ensemble means of surface level analysis parameter data
This dataset contains ERA5 surface level analysis parameter data ensemble means (see linked dataset for spreads). ERA5 is the 5th generation reanalysis project from the European Centre for Medium-Range Weather Forecasts (ECWMF) - see linked documentation for further details. The ensemble means and spreads are calculated from the ERA5 10 member ensemble, run at a reduced resolution compared with the single high resolution (hourly output at 31 km grid spacing) 'HRES' realisation, for which these data have been produced to provide an uncertainty estimate. This dataset contains a limited selection of all available variables and have been converted to netCDF from the original GRIB files held on the ECMWF system. They have also been translated onto a regular latitude-longitude grid during the extraction process from the ECMWF holdings. For a fuller set of variables please see the linked Copernicus Data Store (CDS) data tool, linked to from this record.
Note, ensemble standard deviation is often referred to as ensemble spread and is calculated as the standard deviation of the 10-members in the ensemble (i.e., including the control). It is not the sample standard deviation, and thus were calculated by dividing by 10 rather than 9 (N-1). See linked datasets for ensemble member and ensemble mean data.
The ERA5 global atmospheric reanalysis of the covers 1979 to 2 months behind the present month. This follows on from the ERA-15, ERA-40 rand ERA-interim re-analysis projects.
An initial release of ERA5 data (ERA5t) is made roughly 5 days behind the present date. These will be subsequently reviewed ahead of being released by ECMWF as quality assured data within 3 months. CEDA holds a 6 month rolling copy of the latest ERA5t data. See related datasets linked to from this record. However, for the period 2000-2006 the initial ERA5 release was found to suffer from stratospheric temperature biases and so new runs to address this issue were performed resulting in the ERA5.1 release (see linked datasets). Note, though, that Simmons et al. 2020 (technical memo 859) report that "ERA5.1 is very close to ERA5 in the lower and middle troposphere." but users of data from this period should read the technical memo 859 for further details.
Simple
- Date (Publication)
- 2021-12-13T10:19:19
- Date (Creation)
- 2021-12-13T10:19:19
- Citation identifier
- https://catalogue.ceda.ac.uk/uuid/d8021685264e43c7a0868396a5f582d0
- Citation identifier
- Centre for Environmental Data Analysis (CEDA) / d8021685264e43c7a0868396a5f582d0
- Point of contact
-
Organisation name Individual name Electronic mail address Role European Centre for Medium-Range Weather Forecasts (ECMWF)
unknown
Author Centre for Environmental Data Analysis (CEDA)
Custodian Centre for Environmental Data Analysis (CEDA)
Distributor European Centre for Medium-Range Weather Forecasts (ECMWF)
unknown
Principal investigator Centre for Environmental Data Analysis (CEDA)
pointofContact European Centre for Medium-Range Weather Forecasts (ECMWF)
unknown
pointofContact Centre for Environmental Data Analysis (CEDA)
Publisher
- Maintenance and update frequency
- Monthly
- Update scope
- Dataset
- Keywords
-
-
ECMWF
-
ERA
-
ERA5
-
reanalysis
-
analysis
-
surface level
-
ensemble run
-
-
GEMET - INSPIRE themes, version 1.0
-
-
atmospheric conditions
-
- Access constraints
- Other restrictions
- Other constraints
- Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.
- Use constraints
- Other restrictions
- Spatial representation type
- Grid
- Language
- English
- Topic category
-
- Climatology, meteorology, atmosphere
))
- Begin date
- 1979-01-01T00:00:00
- Unique resource identifier
- WGS 84
- Distribution format
-
Name Version Data are netCDF formatted.
- Distributor contact
-
Organisation name Individual name Electronic mail address Role Centre for Environmental Data Analysis (CEDA)
Distributor
- OnLine resource
-
Protocol Linkage Name https://catalogue.ceda.ac.uk/uuid/d8021685264e43c7a0868396a5f582d0 CEDA Data Catalogue Page
- OnLine resource
-
Protocol Linkage Name http://data.ceda.ac.uk/badc/ecmwf-era5/data/enda/em_sfc/ DOWNLOAD
- OnLine resource
-
Protocol Linkage Name https://confluence.ecmwf.int/display/CKB/ERA5%3A+data+documentation ERA5 documentation page from ECMWF, including list of known issues
- OnLine resource
-
Protocol Linkage Name http://www.ecmwf.int/en/research/climate-reanalysis/era-interim ECMWF ERA5 website
- OnLine resource
-
Protocol Linkage Name http://help.ceda.ac.uk/article/106-netcdf netCDF user guide
- OnLine resource
-
Protocol Linkage Name https://doi.org/10.21957/RCXQFMG0 ECMWF Technical Memo 859: Simmons, A. et al., 2020: Global stratospheric temperature bias and other stratospheric aspects of ERA5 and ERA5.1. ECMWF
- Hierarchy level
- Dataset
Conformance result
- Title
-
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Date (Publication)
- 2010-12-08
- Statement
-
Data are generated by the ERA5 project at European Centre for Medium-Range Weather Forecasts (ECMWF) before being prepared by CEDA staff using the ECMWF system and uploaded to Centre for Environmental Data Analysis (CEDA) for ingestion into the archive. Data are translated over to a regular latitude-longitude grid and converted to netCDF format ahead of transfer to the CEDA system.
Metadata
- File identifier
- d8021685264e43c7a0868396a5f582d0 XML
- Metadata language
- English
- Character set
- UTF8
- Parent identifier
-
European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis 5 (ERA5) model data
5971cb20fae94540b862ae3ed3204c3f
- Hierarchy level
- Dataset
- Date stamp
- 2025-08-10T02:21:48
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
- Metadata author
-
Organisation name Individual name Electronic mail address Role Centre for Environmental Data Analysis (CEDA)
Point of contact
)))
