NERC Data Catalogue Service
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.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2021-12-13T10:19:19
- Dataset Reference Date ()
- 2021-12-13T10:19:19
- Identifier
- Centre for Environmental Data Analysis (CEDA) / d8021685264e43c7a0868396a5f582d0
- Maintenance and update frequency
- monthly
- Update scope
- dataset
- Keywords
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- ECMWF
- ERA
- ERA5
- reanalysis
- analysis
- surface level
- ensemble run
- GEMET - INSPIRE themes, version 1.0 ()
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- atmospheric conditions
- Limitations on Public Access
- otherRestrictions
- Other constraints
- Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
- Use constraints
- otherRestrictions
- Spatial representation type
- grid
- Topic category
-
- Climatology, meteorology, atmosphere
))
- Begin date
- 1979-01-01T00:00:00
- Code
- WGS 84
Distribution Information
- Data format
-
-
Data are netCDF formatted.
()
-
Data are netCDF formatted.
()
- Resource Locator
-
CEDA Data Catalogue Page
Detail and access information for the resource
- Resource Locator
-
DOWNLOAD
Download Data
- Resource Locator
-
ERA5 documentation page from ECMWF, including list of known issues
No further details.
- Resource Locator
-
ECMWF ERA5 website
No further details.
- Resource Locator
-
netCDF user guide
No further details.
- Resource Locator
-
ECMWF Technical Memo 859: Simmons, A. et al., 2020: Global stratospheric temperature bias and other stratospheric aspects of ERA5 and ERA5.1. ECMWF
No further details.
- Resource Locator
-
CEDA Data Catalogue Page
Detail and access information for the resource
- Resource Locator
-
DOWNLOAD
Download Data
- Resource Locator
-
ERA5 documentation page from ECMWF, including list of known issues
No further details.
- Resource Locator
-
ECMWF ERA5 website
No further details.
- Resource Locator
-
netCDF user guide
No further details.
- Resource Locator
-
ECMWF Technical Memo 859: Simmons, A. et al., 2020: Global stratospheric temperature bias and other stratospheric aspects of ERA5 and ERA5.1. ECMWF
No further details.
- Quality Scope
- dataset
Report
- Dataset Reference Date ()
- 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 (en)
- Character set
- 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
- Parent identifier
- European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis 5 (ERA5) model data 5971cb20fae94540b862ae3ed3204c3f
- Resource type
- dataset
- Metadata Date
- 2023-12-01T00:55:48
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
