A data set containing hydrometeorological and hydroclimatological data for 3,540 watersheds in North America is described. The data set contains four main parts: (a) observed hydrometeorological data including daily streamflow observations, precipitation, minimum temperature, and maximum temperature; (b) 20 bias‐corrected climate model projections for two Representative Concentration Pathway (RCP) scenarios and five bias correction methods; (c) hydrological model calibration parameters and simulated streamflow for 4 hydrological models, 2 objective functions, and 10 calibration parameter sets for the reference period; and (d) hydrological simulations for each of the combinations of the abovementioned elements of the climate change impact study chain, for a total of 16,000 combinations. The data set also contains simulations and bias‐corrected climate for 30‐year horizons corresponding to 1.5°C and 2°C temperature increases for a subset of the climate models, for an additional 8,000 combinations. All simulations in the reference period are also provided. Fifty‐one precomputed hydrological indices are made available for each simulation. Overall, 2.89 × 10¹² years of simulations are classified, analyzed, compressed, and made available for all researchers. This data set can be used to evaluate the uncertainty of various components in the impact study chain, to establish relationships between catchment properties and hydrological response to climate change, and to evaluate the spatial distribution of hydrological change according to a multitude of hydrological indices.

中文翻译：

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NAC2H：北美气候变化和水文气候学数据集

描述了一个包含北美3540个流域水文气象和水文气候数据的数据集。该数据集包含四个主要部分：（a）观测到的水文气象数据，包括每日流量观测，降水，最低温度和最高温度；（b）针对两种代表性浓度路径（RCP）方案和五种偏差校正方法的20种偏差校正的气候模型预测；（c）在参考期间内有4个水文模型，2个目标函数和10个标定参数集的水文模型标定参数和模拟流量；（d）对气候变化影响研究链中上述各要素的每种组合进行水文模拟，共计16,000种组合。该数据集还包含模拟和针对30年地平线的偏正校正气候，对应于一部分气候模型的1.5°C和2°C温度升高，另外还有8,000种组合。还提供了参考期间的所有模拟。每次模拟可获得五十一个预先计算的水文指数。整体而言，2.89×10^对12 年的模拟进行分类，分析，压缩，并提供给所有研究人员。该数据集可用于评估影响研究链中各个组成部分的不确定性，建立集水性质与对气候变化的水文响应之间的关系，以及根据众多水文指数评估水文变化的空间分布。