ERA5-Land hourly data

Overview:

ERA5-Land is a reanalysis dataset providing a consistent view of the evolution of land variables over several decades at an enhanced resolution compared to ERA5. ERA5-Land has been produced by replaying the land component of the ECMWF ERA5 climate reanalysis. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using the laws of physics. Reanalysis produces data that goes several decades back in time, providing an accurate description of the climate of the past.

ERA5-Land uses as input to control the simulated land fields ERA5 atmospheric variables, such as air temperature and air humidity. This is called the atmospheric forcing. Without the constraint of the atmospheric forcing, the model-based estimates can rapidly deviate from reality. Therefore, while observations are not directly used in the production of ERA5-Land, they have an indirect influence through the atmospheric forcing used to run the simulation. In addition, the input air temperature, air humidity and pressure used to run ERA5-Land are corrected to account for the altitude difference between the grid of the forcing and the higher resolution grid of ERA5-Land. This correction is called 'lapse rate correction'.

The ERA5-Land dataset, as any other simulation, provides estimates which have some degree of uncertainty. Numerical models can only provide a more or less accurate representation of the real physical processes governing different components of the Earth System. In general, the uncertainty of model estimates grows as we go back in time, because the number of observations available to create a good quality atmospheric forcing is lower. ERA5-land parameter fields can currently be used in combination with the uncertainty of the equivalent ERA5 fields.

The temporal and spatial resolutions of ERA5-Land make this dataset very useful for all kind of land surface applications such as flood or drought forecasting. The temporal and spatial resolution of this dataset, the period covered in time, as well as the fixed grid used for the data distribution at any period enables decisions makers, businesses and individuals to access and use more accurate information on land states.

Variables (selection): wind, temperature, evaporation, albedo, vegetation indices, snow variables, runoff, radiation, precipitation

Spatial resolution: 0.1° x 0.1° (9 km)

Temporal resolution: hourly

Temporal extent: 1950 - present

Data type: Gridded

CRS as EPSG: EPSG:4326

Update frequency: Monthly with a delay of about three months relatively to actual date.

Simple

Date ( Publication )
2019-07-12
Identifier
dataset
Status
On going
Point of contact
European Centre for Medium-Range Weather Forecasts (ECMWF) -

Maintenance and update frequency
Monthly
Keywords ( Theme )
  • air temperature
  • precipitation
  • evaporation
  • albedo
  • snow
  • radiation
  • climate
Continents, countries, sea regions of the world. ( Place )
  • World
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Meteorological geographical features
Use limitation
Licence to Use Copernicus Products
Access constraints
Other restrictions
Use constraints
Intellectual property rights
Other constraints
no limitations to public access
Other constraints
Licence to Use Copernicus Products (Version 1.2, Nov. 2019): "All users of Copernicus Products must provide clear and visible attribution to the Copernicus programme. The Licensee will communicate to the public the source of the Copernicus Products by crediting the Copernicus Climate Change and Atmosphere Monitoring Services" (full licence available here: https://cds.climate.copernicus.eu/api/v2/terms/static/licence-to-use-copernicus-products.pdf
Other constraints
{ "id": "other-open", "name": "Licence to Use Copernicus Products", "url": "https://ads.atmosphere.copernicus.eu/api/v2/terms/static/licence-to-use-copernicus-products.pdf", "quelle": "Source: Copernicus Programme" }
Spatial representation type
Grid
Distance
0.1 degree
Distance
9 km
Metadata language
en
Character set
UTF8
Topic category
  • Environment
  • Geoscientific information
  • Health
  • Climatology, meteorology, atmosphere
Begin date
1950-01-01
End date
2021-08-31
N
S
E
W
thumbnail


Reference system identifier
EPSG / WGS 84 (EPSG:4326) / 8.6
Distribution format
  • GRIB ( )

  • netCDF (experiemental) ( )

OnLine resource
https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-land?tab=overview ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-12-08
Other citation details
http://data.europa.eu/eli/reg/2010/1089/2014-12-31
Explanation
See specified reference
Pass
Yes
Statement
reanalysis dataset providing a consistent view of the evolution of land variables over several decades at an enhanced resolution

Process step

No information provided.

gmd:MD_Metadata

File identifier
601ea08c-0768-4af3-a8fa-7da25fb9125b XML
Metadata language
en
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-10-28T12:27:28
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
European Centre for Medium-Range Weather Forecasts (ECMWF) -

Citation proposal


(2019) . ERA5-Land hourly data.
https://data.opendatascience.eu/geonetwork/static/api/records/601ea08c-0768-4af3-a8fa-7da25fb9125b

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