Swedish Hydroclimatic Data 1961-2020 – Precipitation, Temperature and Streamflow Observations across 50 Catchments (CAMELS-SE)

This community-accessible dataset comprises daily hydroclimatic variables (precipitation, temperature, and streamflow) observed across 50 catchments in Sweden. The dataset covers a 60-year period (1961-2020) and includes information on geographical location, landcover, soil types, hydrologic signatures, and regulation for each catchment. Data was collected from various sources, such as the Swedish Meteorological and Hydrological Institute (SMHI), the Swedish Geological Survey (SGU) and several Copernicus products provided by the European Environment Agency. The compiled, spatially-matched, and processed data is publicly available online. The dataset spans two designated 'climate normal periods' (CNPs): 1961-1990 and 1991-2020, and a wide range of hydroclimatic, topographic and environmental catchment properties, making it a valuable resource for researchers and practitioners to gain in-depth insights into hydrological processes, explore climate change impacts, and devise sustainable water management strategies. With its long record period and versatility, the dataset is a great resource for model calibration, education, method development, and fostering transdisciplinary research across various disciplines.