Modelled daily soil moisture and soil temperature at 1km resolution across the UK mainland, 1965-2018

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

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https://doi.org/10.5285/5100e84a-6af9-419b-b4b6-4a5df13b1aec

This dataset contains model outputs of daily mean volumetric water content and topsoil temperature at 1 km resolution across the UK mainland for the years 1965-2018. The outputs are generated using neural network models trained on COSMOS-UK (cosmic-ray soil moisture) observational data. The data are presented in monthly NetCDF files on the British National Grid.

Publication date: 2024-04-29

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View numbers valid from 29 April 2024 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

WGS 84

Temporal information

Temporal extent

1965-01-01 to 2018-12-31

Temporal resolution

1 day

Provenance & quality

The driving meteorology used to produce the outputs were from the CHESS-met dataset. Specifically, the inputs required to generate topsoil temperature outputs are: current day and previous day driving meteorology (temperature, total precipitation, longwave radiation, shortwave radiation, and the sunlight-hours average shortwave radiation); soil type vector (normalized ratios of five classes: sand, silt, clay, chalk, peat); soil organic carbon; bulk density of soil; land cover vector; elevation. There is an optional input of the MODIS 1 km Land Surface Temperature satellite product Day and/or Night values. The output of the topsoil temperature model is used as input to the soil moisture model.

The inputs required for the soil moisture model are: daily driving meteorology (temperature, pressure, total precipitation, relative humidity, longwave radiation, shortwave radiation, wind speed, and the sunlight-hours average shortwave radiation); soil type vector (normalized ratios of five classes: sand, silt, clay, chalk, peat); soil organic carbon; bulk density of soil; base flow index from the hydrology of soil types (BFIHOST); land cover vector; soil temperature; elevation. There is an optional input of the daily 1 km Soil Water Index satellite product from Copernicus.

Volumetric water content values in the COSMOS-UK data (TDT point probes and neutron sensor) that were higher than 90% were removed from the training set. The COSMOS-UK site Tadham Moor was removed from the training set after visual inspection of the TDT and neutron sensor data.

Licensing and constraints

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

Cite this dataset as:

Khamis, D.; Smith, R.; Fry, M.; Evans, J. (2024). Modelled daily soil moisture and soil temperature at 1km resolution across the UK mainland, 1965-2018. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/5100e84a-6af9-419b-b4b6-4a5df13b1aec

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