Downscaled precipitation and mean air temperature datasets; East-Taylor subbasin; 2008-2019; daily temporal resolution; 400 m spatial resolution

This dataset provides gridded meteorological forcing data (specifically, daily precipitation and daily mean air temperature). The dataset has been generated by downscaling the Parameter-elevation Regressions on Independent Slopes Model (PRISM) dataset from a spatial resolution of 800 m to 400 m. The time period is 2008-2019, and the mapped area is East Taylor subbasin in Upper Colorado. The data are in the form of NetCDF files, arranged by year. Compared to the PRISM dataset, the dates of the downscaled dataset are shifted backwards by one (e.g., downscaled data for May 25 corresponds to PRISM data for May 26). This temporal shifting makes the meteorological forcing correspond more closely to the prescribed date. The NetCDF format is a standard raster format that can be read using any Geographic Information System (GIS) software; plenty of modules exist in popular scripting languages (such as Python, R and Matlab) that can also be used to read NetCDF files. East_Taylor_Tavg_PRISM400 corresponds to mean air temperature. East_Taylor_Precip_PRISM400.zip corresponds to precipitation. Dataset update on March 9, 2022: Uploaded new data files that are identical to the earlier files but are now in the NetCDF format, arranged by year. Earlier, the files were in the GeoTiff format, arranged by date.

本数据集提供网格化气象强迫数据，具体包含日降水量与日平均气温。本数据集通过将基于独立斜坡的参数-高程回归模型（Parameter-elevation Regressions on Independent Slopes Model，PRISM）数据集的空间分辨率从800米降尺度至400米生成。数据集的时间跨度为2008年至2019年，制图覆盖区域为科罗拉多河上游的东泰勒子流域。数据以NetCDF格式文件存储，按年份进行组织。相较于PRISM数据集，本降尺度数据集的日期整体向后偏移一日（例如，5月25日的降尺度数据对应PRISM数据集5月26日的数据）。该时间偏移可使气象强迫数据更贴合预设的日期要求。NetCDF格式属于标准栅格格式，可通过任意地理信息系统（GIS）软件读取；主流脚本语言（如Python、R及Matlab）中均配备可用于读取NetCDF文件的工具包。文件East_Taylor_Tavg_PRISM400对应平均气温数据，文件East_Taylor_Precip_PRISM400.zip对应降水数据。本数据集于2022年3月9日完成更新：上传了与旧版文件内容完全一致的新版数据文件，新版文件采用按年份组织的NetCDF格式；此前旧版文件采用按日期组织的GeoTIFF格式。