dataset · United Kingdom
Government / regulator
Climate hydrology and ecology research support system potential evapotranspiration dataset for Great Britain (1961-2019) [CHESS-PE]
Gridded potential evapotranspiration over Great Britain for the years 1961-2019 at 1 km resolution. This dataset contains two potential evapotranspiration variables calculated using the Penman-Monteith equation parameterised for well-watered short grass: daily total potential evapotranspiration (PET; kg m-2) and daily total potential evapotranspiration with interception correction (PETI; kg m-2). The data are provided in gridded netCDF files. There is one file for each variable for each month of
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What's in it
- Data offered docs-verified
- daily total potential evapotranspiration (PET, kg m-2) · daily total potential evapotranspiration with interception correction (PETI, kg m-2)
- Coverage docs-verified
- Great Britain · 1961-01-01 to 2019-12-31
- Resolution docs-verified
- 1000 m (1 km) grid, OSGB 1936 / British National Grid; daily totals
- Formats docs-verified
- NetCDF
- Access docs-verified
- Download under the UKCEH CHESS-PE licence (ENTRY lists Non-Open government licence); scripted bulk download requires a personal access token
Useful for
- Use cases llm-inferred
- Long-term PET inputs for catchment water balance or hydrological model calibration · Climate baseline evapotranspiration for water resources or drought assessments alongside rainfall · Peatland or wetland water-demand context for ecological assessments
- Audience llm-inferred
- hydrologists · water resources engineers · flood risk consultants · ecologists
Limitations
- Constraints llm-inferred
- Covers Great Britain only, per the docs · Time span ends in 2019; no later years in this record · PET is calculated for well-watered grass (FAO reference), not for specific land cover · Scripted download needs a personal access token · Non-open licence with citation requirements · Gridded NetCDF files need processing before use in GIS or models
- Licence
- Non-Open government licence
- Authentication
- Unknown — review source docs
- GitHub stars
- Unknown
- Last commit
- Unknown
- Last successful page check
- 16/10/2026
- Page health
- healthy
- Package
- Not recorded
- Verification
- Not independently verified
Provenance & evidence
Listed in ukceh-eidc public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (ukceh-eidc)