Normalized Difference Vegetation Index-3rd generation (NDVI) using the Global Inventory Monitoring and Modeling System (GIMMS) 1981-2015

Normalized Difference Vegetation Index-3rd generation (NDVI) using the Global Inventory Monitoring and Modeling System (GIMMS): Vegetation indices are radiometric measures of photosynthetically active radiation absorbed by chlorophyll in the green leaves of vegetation canopies and are therefore good surrogate measures of the physiologically functioning surface greenness level of a region. For 30 years, Compton J. Tucker created the NDVI time series within the framework of the Global Inventory Monitoring and Modeling System (GIMMS) project. He carefully assembled it from different Advanced Very High Resolution Radiometer (AVHRR) sensors and accounting for various deleterious effects, such as calibration loss, orbital drift, volcanic eruptions, etc. The latest version of the GIMMS NDVI data set spans the period July 1981 to December 2015 and is termed NDVI3g (third generation GIMMS NDVI from AVHRR sensors).

基于全球库存监测与建模系统（Global Inventory Monitoring and Modeling System, GIMMS）的第三代归一化差分植被指数（Normalized Difference Vegetation Index, NDVI）：植被指数是植被冠层绿叶中叶绿素所吸收的光合有效辐射的辐射度量指标，因此可作为区域地表生理功能状态下绿度水平的良好替代表征指标。三十余年来，康普顿·J·塔克（Compton J. Tucker）在全球库存监测与建模系统项目框架下构建了该NDVI时间序列数据集。他通过整合多台先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer, AVHRR）的观测数据，并校正了诸如校准损耗、轨道漂移、火山喷发等多种干扰因素的影响。GIMMS NDVI数据集的最新版本时间跨度为1981年7月至2015年12月，被命名为NDVI3g（即基于AVHRR传感器的第三代GIMMS NDVI数据集）。