Daily estimates for meteorological and potential evapotranspiration variables (CHESS) and soil moisture estimates (JULES) at COSMOS-UK sites, 2013-2017

The data sources used for generating the meteorological and potential evapotranspiration variables at COSMOS-UK locations are:
• Climate hydrology and ecology research support system meteorology dataset for Great Britain (1961-2017) [CHESS-met]. Only daily data for the period 2013-2017 were used.
• Climate hydrology and ecology research support system potential evapotranspiration dataset for Great Britain (1961-2017) [CHESS-PE]. Only daily data for the period 2013-2017 were used.
• A JULES soil moisture data product derived as the “Water, carbon and energy fluxes simulation for Great Britain using the JULES Land Surface Model and the Climate Hydrology and Ecology research Support System meteorology dataset (1961-2015) [CHESS-land]” and using a standardized, gridded daily meteorological forcing dataset at 1 km resolution [CHESS-met] as input.
Information about the COSMOS-UK sites and their coordinates were obtained from the dataset:
• Daily and sub-daily hydrometeorological and soil data (2013-2019) [COSMOS-UK]. Location data were obtained for sites active during 2013-2017.
To generate estimates of the meteorological, evapotranspiration and JULES soil moisture variables at the COSMOS-UK locations in Britain a linear interpolation was performed for each day in the period 2013-2017 and for each variable. All computations were performed using the software R.
Checks to verify that no missing data were present in the input datasets and output datasets were performed. Additional descriptive analyses were performed to the outputs to verify that the resulting estimates belong to a feasible and valid range for each variable and to control the residual error in a neighbourhood to each COSMOS-UK site location.