MODIS/TERRA MOD13C1 Vegetation Indices 16-Day L3 Global 0.05Deg CMG Version 6

The MODIS Vegetation Indices Version 6 product provides a Vegetation Index (VI) value at a per pixel basis. There are 2 primary vegetation layers. The algorithm for this product chooses the best available pixel value from all the acquisitions from the 16 day period. The criteria used is low clouds, low view angle and the highest NDVI/EVI value. The first is the Normalized Difference Vegetation Index (NDVI), which is referred to as the continuity index to the existing National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer (NOAA-AVHRR) derived NDVI. The second vegetation layer is the Enhanced Vegetation Index (EVI), which has improved sensitivity over high biomass regions. Information on each individual MODIS Vegetation Indices Product along with improvements/changes for Version 6 are available at: https://lpdaac.usgs.gov/dataset_discovery/modis_products_table.

中分辨率成像光谱仪（MODIS）第六版植被指数产品可提供逐像素的植被指数（VI）数值。该产品包含两类核心植被指数图层。其算法会从16天周期内的所有有效观测数据中选取最优像素值，选取标准为低云覆盖、低观测角度以及最高的归一化差分植被指数（NDVI）/增强型植被指数（EVI）数值。第一类为归一化差分植被指数（NDVI），该指数可与现有基于美国国家海洋和大气管理局-先进甚高分辨率辐射计（NOAA-AVHRR）生成的NDVI形成连续性兼容的观测序列。第二类为增强型植被指数（EVI），其在高生物量区域具备更优的探测灵敏度。各类MODIS植被指数产品的详细信息，以及第六版产品的改进与变更内容，均可通过以下链接获取：https://lpdaac.usgs.gov/dataset_discovery/modis_products_table。