PatagoniaMet: A multi-source hydrometeorological dataset for Western Patagonia

<strong>PatagoniaMet v1.0 </strong>(PMET from here on) is new dataset for Western Patagonia which comprises two datasets: i) PMET-obs, a compilation of quality-controlled ground-based hydrometeorological data, and ii) PMET-sim, a daily gridded product of precipitation, and maximum and minimum temperature. PMET-obs was developed using a 4-step quality control process applied to 523 hydro-meteorological time series (precipitation, air temperature, potential evaporation, streamflow and lake level stations) obtained from eight institutions in Chile and Argentina. Based on this dataset and currently available uncorrected gridded products (ERA5), PMET-sim was developed using statistical bias correction procedures (i.e., quantile mapping), spatial regression models (random forest) and hydrological methods (Budyko framework). The details of each dataset are the following: - <strong>PMET-obs</strong> is a compilation of five hydrometeorological variables obtained from eigth institutions in Chile and Argentina. The daily quality-controlled data of each variable is stored in separate .csv files with the following naming convention: variable_PMETobs_1950_2020_v10d.csv. Each column represents a different gauge with its "gauge_id". Each variable has a additional .csv file with the metadata of each station (variable_PMETobs_v10_metadata.csv). For all variables, the metadata is at least the name (gauge_name), the institution, the station location (gauge_lat and gauge_lon), the altitude (gauge_alt) and the total number of daily records (length). Following current guidelines for hydrological datasets, the upstream area corresponding to each stream gauge was delimited, and several climatic and geographic attributes were derived. The details of the attributes can be found in the README file. - <strong>PMET-sim</strong> is a daily gridded product with a spatial resolution of 0.05° covering the period 1980-2020. The data for each variable (precipitation and maximum and minimum temperature) are stored in separate netcdf files with the following naming convention: variable_PMETsim_1980_2020_v10d.nc. <strong>Citation: </strong> Aguayo, R., León-Muñoz, J., Aguayo, M., Baez-Villanueva, O., Fernandez, A. Zambrano-Bigiarini, M., and Jacques-Coper, M. (2023) PatagoniaMet v1.0: A A multi-source hydrometeorological dataset for Western Patagoniaa (40-56ºS). Submitted to Scientific Data. <strong>Code repository: </strong>https://github.com/rodaguayo/PatagoniaMet