Application of the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System (NHMI-PRMS), 1950-2010, Maurer Calibration

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.1.0 and the USGS National Hydrologic Model Infrastructure (NHMI, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1950 to 2010. Specific file types include: 1) input atmospheric forcings of minimum air temperature, maximum air temperature, and daily precipitation accumulation derived from a gridded observation-based dataset developed by Maurer and others (2002), 2) input parameter files for static and dynamic land cover conditions, and 3) output files of simulated water budget components for each hydrologic response unit and stream segment. Figure 1 shows the calibration methodology that was used for the model application (see LaFontaine and others, 2019 for additional information). Table 1 lists the streamgages that are included in the model application. Table 2 lists the calibration datasets that were used in addition to USGS measured streamflow. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analsysis.

本数据集发布内容涵盖美国本土（conterminous United States, CONUS）范围内，采用降水径流模拟系统（Precipitation Runoff Modeling System, PRMS）5.1.0版本与美国地质调查局（United States Geological Survey, USGS）国家水文模型基础设施（National Hydrologic Model Infrastructure, NHMI，Regan等，2018）开展的水文模拟的输入与输出数据。本系列模拟旨在估算1950年至2010年的区域水量平衡。具体文件类型包括：1) 由Maurer等人（2002）开发的网格化观测数据集衍生得到的大气强迫输入数据，包含最低气温、最高气温与日降水累积量；2) 用于静态与动态土地覆盖条件的输入参数文件；3) 针对每个水文响应单元与河段的模拟水量平衡组分输出文件。图1展示了本次模型应用所采用的率定方法，详细信息可参阅LaFontaine等人（2019）的相关研究。表1列出了本次模型应用纳入的水文测站；表2列出了除美国地质调查局实测径流数据外，本次率定所使用的辅助数据集。本次模拟的前三年属于"模型初始化阶段"，不得纳入后续任何分析工作。