Clouds Optically Gridded by Stereo COGS product

COGS product is a 4D grid of cloudiness covering a 6 km × 6 km × 6 km cube centered at the central facility of SGP site at a spatial resolution of 50 meters and a temporal resolution of 20 seconds. The dimensions are X, Y, Z, and time, where X,Y, Z, correspond to east-west, north-south, and altitude of the grid point, respectively. COGS takes on values 0, 1, and -1 denoting "cloud", "no cloud", and "not available".COGS数据集是一款四维云量网格数据集，覆盖以SGP站点核心设施为中心的6km×6km×6km立方体区域，空间分辨率为50米，时间分辨率为20秒。该数据集的维度依次为X、Y、Z与时间，其中X、Y、Z分别对应网格点的东西向、南北向与海拔高度。COGS的取值为0、1和-1，分别代表“有云”、“无云”和“不可用”。