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ECMWF ERA-Interim: reduced N256 Gaussian gridded monthly mean of daily mean forecast pressure level parameter data (ggfp)

Update Frequency: Not Planned
Latest Data Update: 2019-10-26
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2020-04-24
Download Stats: last 12 months
Dataset Size: 488 Files | 141GB


ERA-Interim is the latest European Centre for Medium-Range Weather Forecasts (ECMWF) global atmospheric reanalysis of the period 1979 to August 2019. This follows on from the ERA-15 and ERA-40 re-analysis projects.

The dataset includes monthly mean of daily mean forecast pressure level data on a reduced N256 Gaussian grid.

Citable as:  European Centre for Medium-Range Weather Forecasts (2020): ECMWF ERA-Interim: reduced N256 Gaussian gridded monthly mean of daily mean forecast pressure level parameter data (ggfp). Centre for Environmental Data Analysis, date of citation.
Abbreviation: Not defined
Keywords: ECMWF, ERA, ERA, Interim, reanalysis, model, forecast, surface level, monthly-mean


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data are generated by the ERA-Interim project at European Centre for Medium-Range Weather Forecasts (ECMWF) before being prepared by ECMWF and uploaded to BADC for ingestion into the archive.

Data Quality:
ECMWF quality controlled data.
File Format:
Data are CF-compliant NetCDF formatted.

Process overview

This dataset was generated by the computation detailed below.

ECMWF ERA-Interim Re-analysis Model deployed on ECMWF Computer


This computation involved: ECMWF ERA-Interim Re-analysis Model deployed on ECMWF Computer. The data assimilation system used to produce ERA-Interim is based on a 2006 release of the IFS (Cy31r2). The system includes a 4-dimensional variational analysis (4D-Var) with a 12-hour analysis window. The spatial resolution of the data set is approximately 80 km (T255 spectral) on 60 vertical levels from the surface up to 0.1 hPa.

Input Description


Output Description


Software Reference


  • units: (0 - 1)
  • long_name: Cloud cover
  • var_id: CC
  • units: kg kg**-1
  • long_name: Cloud ice water content
  • var_id: CIWC
  • units: kg kg**-1
  • long_name: Cloud liquid water content
  • var_id: CLWC
  • units: s**-1
  • standard_name: divergence_of_wind
  • long_name: Divergence
  • var_id: D
  • units: m**2 s**-2
  • long_name: Geopotential
  • standard_name: geopotential
  • var_id: Z
  • var_id: O3
  • units: kg kg**-1
  • long_name: Ozone mass mixing ratio
  • var_id: PV
  • units: K m**2 kg**-1 s**-1
  • long_name: Potential vorticity
  • standard_name: relative_humidity
  • units: %
  • long_name: Relative humidity
  • var_id: R
  • standard_name: specific_humidity
  • units: kg kg**-1
  • long_name: Specific humidity
  • var_id: Q
  • units: m**2 s**-1
  • long_name: Stream function
  • standard_name: atmosphere_relative_vorticity
  • var_id: STRF
  • units: K
  • standard_name: air_temperature
  • long_name: Temperature
  • var_id: T
  • standard_name: eastward_wind
  • units: m s**-1
  • long_name: U velocity
  • var_id: U
  • standard_name: northward_wind
  • units: m s**-1
  • long_name: V velocity
  • var_id: V
  • standard_name: divergence_of_wind
  • units: m**2 s**-1
  • long_name: Velocity potential
  • var_id: VPOT
  • var_id: W
  • units: Pa s**-1
  • standard_name: vertical_air_velocity_expressed_as_tendency_of_pressure
  • long_name: Vertical velocity
  • units: s**-1
  • var_id: VO
  • standard_name: atmosphere_relative_vorticity
  • long_name: Vorticity (relative)
  • units: mbar
  • var_id: p
  • long_name: p
  • var_id: t
  • long_name: t

Co-ordinate Variables

  • units: degrees_north
  • standard_name: latitude
  • var_id: latitude
  • long_name: latitude
  • units: degrees_east
  • standard_name: longitude
  • var_id: longitude
  • long_name: longitude
Temporal Range
Start time:
End time:
Geographic Extent