HySN5, daily, 2001 through 2017

Daily HySN5 data from 2001 through 2017. Data from 1979 through 2000 is stored here. HySN5 is a high resolution HYbrid SeNorge data set of daily near surface humidity and surface incident shortwave and longwave radiation, and surface pressure created by merging reanalysis data (Era5) with a national 1-by-1 km gridded temperature data set, SeNorge2018. The assumptions and methods used to downscale humidity and longwave radiation are similar to those used in WATCH/PGMFD/NLDAS-1. The data has the same projection as SeNorge, UTM33, and is stored for precipitation days, i.e. the datestamp is day-month-year 06 UTC and the variable represents average value of the preceding 24 hours. A previous version of the data set, derived from Era-Interim and SeNorge version 2 is described, and compared to surface observations and other data sets here: GitHub, Erlandsen, H. B., Tallaksen, L. M., and Kristiansen, J.: Merits of novel high-resolution estimates and existing long-term estimates of humidity and incident radiation in a complex domain, Earth Syst. Sci. Data, 11, 797-821, https://doi.org/10.5194/essd-11-797-2019, 2019, and in its supplement: Supplement of Earth Syst. Sci. Data, 11, 797–821, 2019 https://doi.org/10.5194/essd-11-797-2019-supplement.本数据集涵盖2001年至2017年的每日HySN5数据，1979年至2000年的数据存储于此。HySN5是一套高分辨率混合SeNorge数据集（Hybrid SeNorge），由ERA5再分析数据（ERA5）与国家级1×1公里网格化温度数据集SeNorge2018融合生成，包含每日近地表湿度、地表入射短波辐射、长波辐射及地表气压数据。其对湿度与长波辐射进行降尺度的假设与方法，与WATCH/PGMFD/NLDAS-1所采用的方法相似。该数据集采用与SeNorge一致的UTM33投影坐标系（UTM33），数据针对降水日存储，即时间戳采用日-月-年 06 UTC格式，变量值代表此前24小时的平均值。本数据集的前代版本由ERA-Interim（ERA-Interim）与SeNorge 2版本衍生而来，相关描述及与地面观测数据、其他数据集的对比分析可参见GitHub及以下文献：Erlandsen, H. B.、Tallaksen, L. M. 与Kristiansen, J.发表于《地球系统科学数据》（Earth Syst. Sci. Data）2019年第11卷第797-821页的论文《复杂区域内新型高分辨率湿度与入射辐射估算及现有长期估算的优势》，DOI: 10.5194/essd-11-797-2019；以及该论文的补充材料：《地球系统科学数据》2019年第11卷补充材料，DOI: 10.5194/essd-11-797-2019-supplement。