Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid)

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This dataset is available under the terms of the Open Government Licence

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https://doi.org/10.5285/beb62085-ba81-480c-9ed0-2d31c27ff196

This is the most recent version of this dataset

Gridded potential evapotranspiration calculated from HadUK-Grid gridded observed meteorological data at 1 km resolution over the United Kingdom for the years 1969-2022. 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.

Publication date: 2023-11-23

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More information

View numbers valid from 23 November 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

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 2022-12-31

Provenance & quality

This dataset was derived from the HadUK-Grid meteorological dataset v1.0.3.0 on a 1km grid over the UK for 1969-2020 inclusive, v1.1.0.0 for 2021, and v1.2.0 for 2022. (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.

Licensing and constraints

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. (2023). Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid). NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/beb62085-ba81-480c-9ed0-2d31c27ff196

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Citations

Slater, L., Coxon, G., Brunner, M., McMillan, H., Yu, L., Zheng, Y., Khouakhi, A., Moulds, S., & Berghuijs, W. (2024). Spatial Sensitivity of River Flooding to Changes in Climate and Land Cover Through Explainable AI. In Earth’s Future (Vol. 12, Issue 5). American Geophysical Union (AGU). https://doi.org/10.1029/2023ef004035