Accuracy assessment of the MODIS snow products
Accuracy assessment of the MODIS snow products
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DOI：
10.1002/hyp.6715
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发表时间：
2007-06-15
影响因子：
3.2
通讯作者：
Riggs, George A.
中科院分区：
文献类型：
--
作者：
Hall, Dorothy K.;Riggs, George A.
自 2000 年 2 月以来，Terra 卫星提供了一套具有各种空间和时间分辨率的中分辨率成像光谱仪 (MODIS) 积雪产品。标准产品包括每日和 8 天复合 500 米分辨率条带和切片产品（其中包括积雪覆盖分数 (FSC) 和积雪反照率），以及气候模拟网格 (CMG)（也包括 FSC）上的 0.05 度分辨率产品。这些雪产品（来自 Collection 4 (C4) 再处理）已经成熟，大多数已经过不同程度的验证，并且可以通过国家冰雪数据中心订购。经过充分研究的 500 m 分辨率测带 (MODI0_L2) 和日常切片 (MOD10A1) 产品的总体绝对精度类似于 93%，但因土地覆盖类型和雪况而异。最常见的错误是由于雪/云辨别问题造成的，但是，MODIS 云掩模（一种输入产品）的改进已在“集合 5”再处理中发生。检测非常薄的雪（
A suite of Moderate-Resolution Imaging Spectroradiometer (MODIS) snow products at various spatial and temporal resolutions from the Terra satellite has been available since February 2000. Standard products include daily and 8-day composite 500 m resolution swath and tile products (which include fractional snow cover (FSC) and snow albedo), and 0.05 degrees resolution products on a climate-modelling grid (CMG) (which also include FSC). These snow products (from Collection 4 (C4) reprocessing) are mature and most have been validated to varying degrees and are available to order through the National Snow and Ice Data Center. The overall absolute accuracy of the well-studied 500 m resolution swath (MODI0_L2) and daily tile (MOD10A1) products is similar to 93%, but varies by land-cover type and snow condition. The most frequent errors are due to snow/cloud discrimination problems, however, improvements in the MODIS cloud mask, an input product, have occurred in 'Collection 5' reprocessing. Detection of very thin snow (