dataset · United Kingdom
Government / regulator
Potential evapotranspiration derived from Climate Hydrology and Ecology Research Support System meteorological gridded climate observations (Hydro-PE CHESS), 19
This dataset contains two gridded potential evapotranspiration variables for Great Britain from 1961-2019: 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 variables were calculated from the Climate Hydrology and Ecology research Support System meteorology dataset for Great Britain (1961-2019) [CHESS-met] gridded observed meteorological data at 1 km resolution. The units kg m-2 d-1 are equ
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What's in it
- Data offered docs-verified
- daily potential evapotranspiration (PET, kg m-2 d-1 = mm d-1) · daily potential evapotranspiration with interception correction (PETI, kg m-2 d-1 = mm d-1)
- Coverage docs-verified
- Great Britain · 1961-01-01 to 2019-12-31
- Resolution docs-verified
- 1 km (1000 m) spatial; daily temporal
- Formats docs-verified
- NetCDF
- Access docs-verified
- Open Government Licence (OGL); download from NERC EIDC catalogue; scripted (wget/curl) bulk download requires a personal access token (Bearer)
Useful for
- Use cases llm-inferred
- FRA evaporative loss inputs for catchment water balance (GB) · Long-term PET context for drainage and SuDS design assessments · Groundwater recharge and water balance modelling using PET as an input
- Audience llm-inferred
- hydrologists · flood consultants · water resources engineers · drainage engineers · environmental consultants
Limitations
- Constraints llm-inferred
- Covers Great Britain only, 1961-2019; no data after 2019 in this dataset · PET is parameterised for a well-watered grass surface, not other land covers · Scripted download needs a personal access token · Files are split per variable per calendar month, so multi-month analysis needs merging · Monthly mean wind speed is an input, so daily wind variability is not represented
- Licence
- 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)