Hydro-PE: gridded datasets of historical and future Penman–Monteith potential evaporation for the United Kingdom
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Published:2023-10-06
Issue:10
Volume:15
Page:4433-4461
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ISSN:1866-3516
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Container-title:Earth System Science Data
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language:en
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Short-container-title:Earth Syst. Sci. Data
Author:
Robinson Emma L.ORCID, Brown Matthew J., Kay Alison L.ORCID, Lane Rosanna A.ORCID, Chapman Rhian, Bell Victoria A., Blyth Eleanor M.ORCID
Abstract
Abstract. We present two new potential evaporation datasets for the United Kingdom: a
historical dataset, Hydro-PE HadUK-Grid, which is derived from the HadUK-Grid
gridded observed meteorology (1969–2021), and a future dataset, Hydro-PE UKCP18 RCM, which is
derived from UKCP18 regional climate projections (1980–2080).
Both datasets are suitable for hydrological modelling and provide Penman–Monteith potential evapotranspiration parameterised for short grass, with and without a correction for
interception on days with rainfall. The potential evapotranspiration calculations have been formulated to closely follow the methodology of the existing Meteorological Office Rainfall and Evaporation Calculation System (MORECS) potential evapotranspiration, which has historically been widely used by hydrological modellers in the United Kingdom.
The two datasets have been created using the same methodology to allow seamless modelling from past to future. Hydro-PE HadUK-Grid shows good agreement with MORECS in much of the United Kingdom, although Hydro-PE HadUK-Grid is higher in the mountainous regions of Scotland and Wales. This is due to differences in the underlying meteorology, in particular the wind speed, which are themselves due to the different spatial scales of the data. Hydro-PE HadUK-Grid can be downloaded from https://doi.org/10.5285/9275ab7e-6e93-42bc-8e72-59c98d409deb (Brown et al., 2022)
and Hydro-PE UKCP18 RCM can be
downloaded from
https://doi.org/10.5285/eb5d9dc4-13bb-44c7-9bf8-c5980fcf52a4 (Robinson et al., 2021).
Funder
Natural Environment Research Council
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences
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