ECMWF Operational Orography Data

Orography files for the European Centre for Medium-Range Weather Forecasts's (ECMWF) operational forecast model. Archived data are on the 1.125 and 2.5 degree regular longitude-latitude grids, N80 (full) Gaussian grid and Spectral (T106) grid. These files are updated each time the model orography is changed. For the Operational data (March 1994-present day) there are orography files for the following dates: 1 March 1994, 4 April 1995, 8 September 1996, 10 December 1996, 1 April 1998 and 12 October 1999. The orography for the ERA-15 project was constant so only the start date orography is stored here: i.e. for 1 Jan 1979. The spectral orography file only contains the orography data (surface geopotential). Depending on the age and grid type, the remaining files contain some of the constant fields: Geopotential (at the surface, orography), Standard deviation of orography, Anisotropy of subgrid scale orography, Angle of subgrid scale orography, Slope of subgrid scale orography, Land/Sea mask, EW component of sub-grid scale orographic variance, NScomponent of sub-grid scale orographic variance, NWSE component of sub-grid scale orographic variance, NESW component of sub-grid scale orographic variance.

Date (Publication): 2012-05-25T15:09:16

Date (Creation): 2012-05-25T15:09:16

Citation identifier: https://catalogue.ceda.ac.uk/uuid/76c8a9f9c14545fc4fb11e4aceb148e5

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 76c8a9f9c14545fc4fb11e4aceb148e5

Point of contact

Organisation name	Electronic mail address	Role
European Centre for Medium-Range Weather Forecasts (ECMWF)	unknown	Author
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Custodian
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Distributor
European Centre for Medium-Range Weather Forecasts (ECMWF)	unknown	Principal investigator
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Publisher

Maintenance and update frequency: Daily

Update scope: Dataset

Keywords

ECMWF
operational
forecast
analysis
surface
model
Orography Data

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Restricted data: please submit an application using the REQUEST ACCESS link for access.

Use constraints: Other restrictions

Other constraints: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/ecmwf_op_agreement.pdf, appropriate use of these data may fall under academic use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 1994-03-01T00:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are GRIB-1 formatted

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/76c8a9f9c14545fc4fb11e4aceb148e5	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/ecmwf-op/data/orography	DOWNLOAD

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 extracted from European Centre for Medium-Range Weather Forecasts (ECMWF) MARS system and transfered to BADC daily, 10 days in arrears of production.

Metadata

File identifier: 76c8a9f9c14545fc4fb11e4aceb148e5 XML

Metadata language: English

Character set: UTF8

Parent identifier: ECMWF operational analysis: Assimilated Data
c46248046f6ce34fc7660a36d9b10a71

Hierarchy level: Dataset

Date stamp: 2026-03-16T03:01:12

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Point of contact

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