MISR Level 1B2 Ellipsoid Data V003

Multi-angle Imaging SpectroRadiometer (MISR) is an instrument designed to view Earth with cameras pointed in 9 different directions. As the instrument flies overhead, each piece of Earth's surface below is successively imaged by all 9 cameras, in each of 4 wavelengths (blue, green, red, and near-infrared). The goal of MISR is to improve our understanding of the fate of sunlight in Earth's environment, as well as distinguish different types of clouds, particles, and surfaces. Specifically, MISR monitors the monthly, seasonal, and long-term trends in three areas: 1) amount and type of atmospheric particles (aerosols), including those formed by natural sources and by human activities; 2) amounts, types, and heights of clouds, and 3) distribution of land surface cover, including vegetation canopy structure. MISR Level 1B2 Ellipsoid Data V003 contains Ellipsoid-projected TOA Radiance, resampled at the surface and topographically corrected, as well as geometrically corrected by PGE22.

多角度成像光谱辐射计（Multi-angle Imaging SpectroRadiometer, MISR）是一款专为通过9个不同指向的相机开展地球观测而设计的仪器。当该仪器飞越上空时，下方地表的每一个区域都会被9台相机依次成像，成像覆盖蓝、绿、红及近红外共4个波段。
MISR的研发目标在于深化对地球环境中太阳光辐射归宿的认知，同时实现对不同类型云系、颗粒物与地表覆盖物的精准区分。具体而言，MISR将在三大领域开展月度、季节及长期趋势监测：1）大气颗粒物（aerosol）的含量与类型，涵盖自然源与人类活动产生的气溶胶；2）云的含量、类型与高度；3）陆地地表覆盖的分布特征，包括植被冠层结构。
本次提供的数据集为MISR V003版本1B2级椭球投影数据集（MISR Level 1B2 Ellipsoid Data V003），包含经地表重采样、地形校正，且由PGE22完成几何校正的椭球投影大气层顶辐射亮度（TOA Radiance）数据。