MODIS/TERRA MOD13C2 Vegetation Indices Monthly 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（Moderate Resolution Imaging Spectroradiometer，MODIS）植被指数第6版产品可为每个像素提供植被指数（Vegetation Index, VI）数值。该产品包含两类核心植被指数图层。其算法会从16天合成周期内的所有观测数据中选取最优像素值，选取标准包括低云量、低观测角度以及最高的归一化差分植被指数/增强型植被指数（NDVI/EVI）数值。第一类为归一化差分植被指数（Normalized Difference Vegetation Index, NDVI），该指数可作为现有美国国家海洋和大气管理局-先进甚高分辨率辐射计（National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer, NOAA-AVHRR）衍生NDVI的连续性参考指标。第二类为增强型植被指数（Enhanced Vegetation Index, EVI），其在高生物量区域具备更优异的观测灵敏度。各类MODIS植被指数产品的详细信息以及第6版产品的更新改进内容，可通过以下链接获取：https://lpdaac.usgs.gov/dataset_discovery/modis_products_table。