{"id":"beb62085-ba81-480c-9ed0-2d31c27ff196","uri":"https://catalogue.ceh.ac.uk/id/beb62085-ba81-480c-9ed0-2d31c27ff196","type":"dataset","title":"Potential evapotranspiration derived from HadUK-Grid 1km gridded climate observations 1969-2022 (Hydro-PE HadUK-Grid)","description":"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.","metadataDate":"2026-03-05T16:18:30","resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/beb62085-ba81-480c-9ed0-2d31c27ff196"},{"code":"10.5285/beb62085-ba81-480c-9ed0-2d31c27ff196","codeSpace":"doi:"}],"relationships":[{"relation":"https://vocabs.ceh.ac.uk/eidc#supersedes","target":"https://catalogue.ceh.ac.uk/id/9275ab7e-6e93-42bc-8e72-59c98d409deb"},{"relation":"https://vocabs.ceh.ac.uk/eidc#supersedes","target":"9275ab7e-6e93-42bc-8e72-59c98d409deb"}],"lineage":"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.\n","reasonChanged":"There is a new dataset with 2023 data.","spatialRepresentationTypes":["grid"],"topicCategories":[{"value":"climatologyMeteorologyAtmosphere","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/climatologyMeteorologyAtmosphere"}],"keywordsTheme":[{"value":"Climate and climate change","uri":"http://onto.nerc.ac.uk/CEHMD/topic/4"}],"keywordsOther":[{"value":"evaporation","uri":"http://www.eionet.europa.eu/gemet/concept/3019"},{"value":"evapotranspiration","uri":"http://www.eionet.europa.eu/gemet/concept/3022"},{"value":"hydrology","uri":"http://www.eionet.europa.eu/gemet/concept/4118"},{"value":"modelling","uri":"http://www.eionet.europa.eu/gemet/concept/5327"},{"value":"potential evaporation"},{"value":"potential evapotranspiration"}],"distributionFormats":[{"name":"NetCDF","type":"application/netcdf","version":"4"}],"inspireThemes":[{"theme":"Atmospheric Conditions","uri":"http://inspire.ec.europa.eu/theme/ac"}],"spatialResolutions":[{"distance":"1000"}],"funding":[{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardNumber":"NE/S017380/1","awardURI":"https://gtr.ukri.org/projects?ref=NE%2FS017380%2F1","ror":true,"orcid":false}],"boundingBoxes":[{"westBoundLongitude":-8.648,"eastBoundLongitude":1.768,"southBoundLatitude":49.864,"northBoundLatitude":60.861,"bounds":"{\"type\": \"Feature\",      \"properties\": {},      \"geometry\": {        \"type\": \"Polygon\",        \"coordinates\": [[[-8.648, 49.864], [-8.648, 60.861], [1.768, 60.861], [1.768, 49.864], [-8.648, 49.864]]]      }}","coordinates":"[[[-8.648, 49.864], [-8.648, 60.861], [1.768, 60.861], [1.768, 49.864], [-8.648, 49.864]]]"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"responsibleParties":[{"familyName":"Brown","givenName":"M.J.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Maclean Building, Benson Lane, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire","postalCode":"OX10 8BB","country":"United Kingdom"},"fullName":"Brown, M.J.","pointOfContact":"UK Centre for Ecology & Hydrology"},{"familyName":"Brown","givenName":"M.J.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-1127-0279","fullName":"Brown, M.J."},{"familyName":"Robinson","givenName":"E.L.","organisationName":"UK Centre for Ecology & 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Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-0792-5650","fullName":"Bell, V.A."},{"familyName":"Blyth","givenName":"E.M.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-5052-238X","fullName":"Blyth, E.M."},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"},{"organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"rightsHolder","email":"enquiries@ceh.ac.uk"}],"temporalExtents":[{"begin":"1969-01-01","end":"2022-12-31"}],"onlineResources":[{"url":"https://data-package.ceh.ac.uk/sd/beb62085-ba81-480c-9ed0-2d31c27ff196.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"},{"url":"https://catalogue.ceh.ac.uk/datastore/eidchub/beb62085-ba81-480c-9ed0-2d31c27ff196","name":"Download the data","description":"Download a copy of this data","function":"fileAccess","type":"OTHER"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/27700","title":"OSGB 1936 / British National Grid"}],"incomingCitations":[{"description":"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). 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