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.

本可公开获取的数据集包含瑞典50个流域逐日观测得到的水文气候变量，具体包括降水量、气温与河道径流量。该数据集的时间跨度为60年（1961年至2020年），同时收录了各流域的地理位置、土地覆被、土壤类型、水文特征指标以及水文调控相关信息。
本数据集的数据来源于多个渠道，包括瑞典气象水文研究所（Swedish Meteorological and Hydrological Institute, SMHI）、瑞典地质调查局（Swedish Geological Survey, SGU），以及欧洲环境署提供的多项哥白尼计划产品。经整合、空间匹配与预处理后的公开数据集可在线获取。
该数据集覆盖两段指定的气候标准期（climate normal periods, CNPs）：1961年至1990年与1991年至2020年，同时包含丰富的流域水文气候、地形与环境属性信息，可为研究人员与行业从业者深入解析水文过程、探究气候变化影响、制定可持续水资源管理策略提供极具价值的研究资源。
凭借其长时序的观测记录与广泛的适用性，该数据集可广泛应用于模型校准、教学、方法开发，以及推动多学科跨领域研究。