Collection-1 Landsat Level-3 Fractional Snow Covered Area (FSCA) Science Product

The U.S. Geological Survey (USGS) has developed and implemented an algorithm that identifies the spatial and temporal distribution of snow covered area in U.S. Landsat Analysis Ready Data (ARD) tiles to produce Landsat fractional Snow Covered Area (fSCA) Science Products. The fSCA packages include per-pixel percentages of snow cover (SNOW) as well as a revised cloud mask (REVCM) which flags various surficial and atmospheric conditions. Fractional Snow Covered Area products were generated for individual U.S. Landsat ARD tiles acquired over the western conterminous U.S. (CONUS) for 1984 - 2017.

美国地质调查局（U.S. Geological Survey, USGS）开发并实现了一款算法，该算法可识别美国陆地卫星（Landsat）分析就绪数据（Analysis Ready Data, ARD）瓦片内积雪覆盖区域的时空分布，进而生成陆地卫星分数积雪覆盖面积（fractional Snow Covered Area, fSCA）科学产品。该分数积雪覆盖面积产品包包含逐像素积雪覆盖率（SNOW）以及修订云掩膜（REVCM），后者可标记各类地表与大气状态。本数据集针对1984年至2017年间采集自美国本土西部（CONUS）的单幅美国陆地卫星ARD瓦片生成。