http://english.cas.cn/newsroom/research_news/infotech/202601/t20260119_1145878.shtml

https://www.nature.com/articles/s41597-025-05831-x

A team from the CAS Aerospace Information Research Institute has developed the world’s first global, 10 m resolution map of leaf chlorophyll content (LCC), providing a new method for closely tracking plant health and ecosystem productivity worldwide. For this, they used data from Sentinel-2, two satellites of the European Copernicus space mission.

The chlorophyll content in leaves reflects plant health and their efficiency in absorbing carbon from the atmosphere. However, the absence of high-resolution, global-scale data has hindered efforts to understand how chlorophyll varies across different ecosystems and how it responds to environmental changes. To fill this knowledge gap, the research team applied the Chlorophyll Sensitive Index (CSI) to the cloud-based Google Earth Engine (GEE) platform. This approach allowed the team to process large volumes of Sentinel-2 data and generate a global chlorophyll map with an unprecedented spatial resolution. In addition to the global dataset, the researchers developed a dedicated web application that allows users to create customized chlorophyll maps. Users can select specific regions, time periods, and resolutions, as well as generate time-series profiles to study vegetation changes over time. A 100-meter resolution version of the data is freely available via the Science Data Bank, along with a dedicated web application on the GEE platform.