The is the primary sensor on the Sentinel-2A and 2B satellites. Unlike older weather satellites that provide frequent but low-resolution data, MSI offers a high spatial resolution of up to 10 meters. This allows it to "see" much smaller fires that other satellites might miss, making it invaluable for early detection and detailed mapping. 2. How "Active Fire" Detection Works

This technology has revolutionized how scientists track wildfires, peatland burning, and industrial heat sources from space. Below is an in-depth look at how MSI AF data is used and why it is a critical tool for global fire monitoring. 1. What is the Sentinel-2 MSI?

: The precision of MSI allows for the detection of industrial activities, such as operating kilns or gas flares at landfills, which are vital for monitoring carbon emissions.

: Researchers use MSI AF data to monitor thermal activity within volcano craters, providing early warnings of potential eruptions. 4. Comparison with Other Satellites

In the world of satellite remote sensing and environmental monitoring, "MSI AF" refers to the detection of using the Multi-Spectral Instrument (MSI) onboard the European Space Agency’s (ESA) Sentinel-2 satellites.

: MSI AF is used to track the spread of forest fires in real-time, helping emergency responders identify exactly where the "front" of a fire is located.

Active Fire (AF) detection relies on identifying —pixels that are significantly hotter than their surroundings.

Monitoring active fires in Borneo from Sentinel-2 MSI images