It is an image detector, the purpose of which is to observe clouds, aerosols and vegetation and ocean surfaces, in order to allow a better understanding of the Earth's radiation and the interaction of atmospheric movements.
仪器本身是一台图像探测仪，用以观测云层、烟雾、植被以及海洋表面，以便更好地了解地球的辐射及大气运动的交互作用。