Historical Snow Simulation (Open Loop)

This dataset contains historical snow water equivalent (SWE) simulations, produced from the Hydrotel snow module fed with meteorological observations. The simulations are provided on a 10km by 10km grid covering the southern portion of the province of Quebec, Canada and used as a proxy of SWE climatology in our adaptation of the Schaake shuffle.. The grid for the historical SWE simulation covers -81.5 to -57.1 in longitude and 43 to 53.4 in latitude, which is smaller than the meteorological grids, but for the the common portion, the grids overlap. The SWE grid has is 105 (lat) x 245 (Lon), for a total of 25725 pixels. A total of 44 years are used to produce the historical grids (1961-2004), and +/- 7 days around each of the date is used, for a total of 44years x 15 days = 660 values for each day of the year. Therefore, the dimensions of the historical SWE data is 660 x 25 725, which represents \"nb of sample days x grid points).

本数据集包含历史雪水当量（Snow Water Equivalent, SWE）模拟结果，该结果由以气象观测数据为输入的Hydrotel雪模块生成。模拟数据基于覆盖加拿大魁北克省南部区域的10km×10km网格构建，在本次适配的Schaake洗牌（Schaake shuffle）中被用作雪水当量气候学的代理变量。本次历史雪水当量模拟的网格覆盖经度范围-81.5至-57.1、纬度范围43至53.4，其范围小于气象观测网格，但二者的公共区域存在重叠。该雪水当量网格的维度为105（纬度）×245（经度），总计25725个网格点。本次历史网格的生成使用了1961年至2004年共44年的观测数据，且针对每个日期选取前后±7天的窗口期，因此全年每日对应的数据总量为44年×15天=660个数值。因此，历史雪水当量数据的维度为660×25725，即样本天数×网格点数。