MODIS/Terra Vegetation Indices Daily Rolling-8-Day L3 Global 500m SIN Grid NRT

The MODIS level-3 Vegetation Indices Daily Rolling-8-Day Near Real Time (NRT), MOD13A4N data are provided everyday at 500-meter spatial resolution as a gridded level-3 product in the Sinusoidal projection. Vegetation indices are used for global monitoring of vegetation conditions and are used in products displaying land cover and land cover changes. These data may be used as input for modeling global biogeochemical and hydrologic processes and global and regional climate. These data also may be used for characterizing land surface biophysical properties and processes including primary production and land cover conversion.

Note: This is a near real-time product only. Standard historical data and imagery for MOD13Q4N (250m) and MOD13A4N (500m) are not available. Users can either use the NDVI standard products from LAADS web (https://ladsweb.modaps.eosdis.nasa.gov/search/) or access the science quality MxD09[A1/Q1] data and create the NDVI product of their own.

MODIS三级植被指数每日滚动八日近实时（NRT）数据，MOD13A4N数据，以500米的空间分辨率，以正弦投影形式每日提供，作为网格化的三级产品。植被指数被应用于全球植被状况的监测，并在展示土地覆盖和土地覆盖变化的产物中使用。这些数据可被用作模拟全球生物地球化学和水利过程以及全球和区域气候的输入。此外，这些数据亦可用于表征地表生物物理性质和过程，包括初级生产和土地覆盖转化。注：此产品仅为近实时产品。MOD13Q4N（250米）和MOD13A4N（500米）的标准历史数据和图像不可用。用户可以选择使用来自LAADS网站（https://ladsweb.modaps.eosdis.nasa.gov/search/）的NDVI标准产品，或访问科学质量的MxD09[A1/Q1]数据，自行创建NDVI产品。