THIS DATASET HAS BEEN SUPERSEDED The latest version is Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid)
This data has been superseded due to errors in the data. Intercepted precipitation was not always limited to the total amount of precipitation that fell, and so occasionally reported slightly higher PETI, mostly in the summer months. Also there was an occasional error in interpolation from monthly to daily data affecting both the PET and PETI calculations, mostly in the winter months (e.g. negative sunshine hours). The newer version corrects these errors.
If you need access to the archived version, please contact the EIDC
Potential evapotranspiration derived from HadUK-Grid gridded climate observations 1969-2020 (Hydro-PE HadUK-Grid)
https://doi.org/10.5285/470d9bf9-8c82-487c-956e-f15f9d8aac64
Cite this dataset as:
Brown, M.J.; Robinson, E.L.; Kay, A.L.; Chapman, R.; Bell, V.A.; Blyth, E.M. (2022). Potential evapotranspiration derived from HadUK-Grid gridded climate observations 1969-2020 (Hydro-PE HadUK-Grid). NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/470d9bf9-8c82-487c-956e-f15f9d8aac64
Download/Access
THIS DATASET HAS BEEN SUPERSEDED The latest version is Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid)
This data has been superseded due to errors in the data. Intercepted precipitation was not always limited to the total amount of precipitation that fell, and so occasionally reported slightly higher PETI, mostly in the summer months. Also there was an occasional error in interpolation from monthly to daily data affecting both the PET and PETI calculations, mostly in the winter months (e.g. negative sunshine hours). The newer version corrects these errors.
If you need access to the archived version, please contact the EIDC
Gridded potential evapotranspiration calculated from HadUK-Grid gridded observed meteorological data at 1 km resolution over the United Kingdom for the years 1969-2020. This dataset contains two potential evapotranspiration variables: daily total potential evapotranspiration (PET; kg m-2 d-1) and daily total potential evapotranspiration with interception correction (PETI; kg m-2 d-1). The units kg m-2 d-1 are equivalent to mm d-1.
The data are provided in gridded netCDF files. There is one file for each variable, for each calendar month.
These data were generated as part of NERC grant NE/S017380/1 (Hydro-JULES: Next generation land surface and hydrological prediction.)
The data are provided in gridded netCDF files. There is one file for each variable, for each calendar month.
These data were generated as part of NERC grant NE/S017380/1 (Hydro-JULES: Next generation land surface and hydrological prediction.)
Publication date: 2022-05-17
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Format
NetCDF
Spatial information
Study area
Spatial representation type
Raster
Spatial reference system
OSGB 1936 / British National Grid
Temporal information
Temporal extent
1969-01-01 to 2020-12-31
Provenance & quality
This dataset was derived from the HadUK-Grid gridded observed meteorological dataset v1.0.3.0 at 1 km resolution over the United Kingdom for the years 1969-2020 (https://catalogue.ceda.ac.uk/uuid/4dc8450d889a491ebb20e724debe2dfb). HadUK-Grid is a gridded dataset derived from observed meteorological station data. The daily total potential evapotranspiration (PET; kg m-2 d-1) was calculated using the Penman-Monteith equation parameterised for a well-watered grass surface. The daily total potential evapotranspiration with interception correction (PETI; kg m-2 d-1), was calculated as PET then a correction added for interception by a grass canopy on days with non-zero precipitation.
The HadUK-Grid meteorological variables used were: daily maximum and minimum air temperature at 1.5 m (°C), daily precipitation (mm d-1), monthly mean water vapour pressure (hPa), monthly mean sea level pressure (hPa), monthly total sunshine hours (hours) and monthly mean wind speed at 10 m (m s-1). Other variables used were the surface elevation (m) and Ångström coefficients a, b and c. A description of the methodology is available in the supporting documentation.
The HadUK-Grid meteorological variables used were: daily maximum and minimum air temperature at 1.5 m (°C), daily precipitation (mm d-1), monthly mean water vapour pressure (hPa), monthly mean sea level pressure (hPa), monthly total sunshine hours (hours) and monthly mean wind speed at 10 m (m s-1). Other variables used were the surface elevation (m) and Ångström coefficients a, b and c. A description of the methodology is available in the supporting documentation.
Licensing and constraints
THIS DATASET HAS BEEN SUPERSEDED The latest version is Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid)
This data has been superseded due to errors in the data. Intercepted precipitation was not always limited to the total amount of precipitation that fell, and so occasionally reported slightly higher PETI, mostly in the summer months. Also there was an occasional error in interpolation from monthly to daily data affecting both the PET and PETI calculations, mostly in the winter months (e.g. negative sunshine hours). The newer version corrects these errors.
If you need access to the archived version, please contact the EIDC
This dataset is available under the terms of the Open Government Licence 
Cite this dataset as:
Brown, M.J.; Robinson, E.L.; Kay, A.L.; Chapman, R.; Bell, V.A.; Blyth, E.M. (2022). Potential evapotranspiration derived from HadUK-Grid gridded climate observations 1969-2020 (Hydro-PE HadUK-Grid). NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/470d9bf9-8c82-487c-956e-f15f9d8aac64
Related
Citations
Robinson, E.L. (2023) NERC-CEH/hydro-pe: v1.1.0. Zenodo https://doi.org/10.5281/zenodo.8363151
Correspondence/contact details
Authors
https://orcid.org/0000-0003-1127-0279 Other contacts
Custodian
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Additional metadata
Keywords
Funding
Natural Environment Research Council Award: NE/S017380/1
Last updated
21 March 2025 13:36