MOD13Q1.061质量控制（去云等）之GEE

最新推荐文章于 2024-08-02 18:00:00 发布

编程有这么难吗？

最新推荐文章于 2024-08-02 18:00:00 发布

阅读量5k

点赞数 11

分类专栏： GEE 文章标签： java

本文链接：https://blog.youkuaiyun.com/weixin_45909963/article/details/125327567

版权

本文介绍了MOD13Q1.061数据集，包括其提供的植被指数（NDVI和EVI）以及详细的波段信息。重点讲述了质量控制在遥感影像处理中的重要性，特别是如何使用SummaryQA波段进行云和云影的去除。通过GEE平台的bitwiseAnd函数进行二进制操作，确保数据的准确性。同时提醒在选取NDVI等数据前应先进行质量控制，以避免错误。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

一、MOD13Q1.061数据说明（来自GEE）

1. DATA

MOD13Q1.061 Terra Vegetation Indices 16-Day Global 250m

2.DESCRIPTION

The MOD13Q1 V6.1 product provides a Vegetation Index (VI) value at a per pixel basis. There are two primary vegetation layers.
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) that minimizes canopy background variations and maintains sensitivity over dense vegetation conditions.
The MODIS NDVI and EVI products are computed from atmospherically corrected bi-directional surface reflectances that have been masked for water, clouds, heavy aerosols, and cloud shadows.