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Area of Science:

  • Earth Observation
  • Remote Sensing
  • Fire Science

Background:

  • Moderate Resolution Imaging Spectroradiometer (MODIS) instruments provide global fire data.
  • Previous Collection 5 fire product had limitations including false alarms and missed large fires.

Purpose of the Study:

  • To describe improvements in the MODIS fire detection algorithm and product (Collection 6).
  • To address limitations of the previous Collection 5 fire product.
  • To expand fire detection to oceans for monitoring offshore gas flaring.

Main Methods:

  • Updated MODIS fire detection algorithm and swath-level product reprocessing (Collection 6).
  • Stage-3 validation using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images.
  • Radiance-based approach for Fire Radiative Power (FRP) retrieval.

Main Results:

  • Collection 6 showed targeted improvements over Collection 5.
  • Reduced omission errors for large fires and false alarm rates in tropical ecosystems.
  • Global commission error decreased from 2.4% (Collection 5) to 1.2% (Collection 6).
  • Increased probability of detection in Boreal North America and Asia.

Conclusions:

  • The Collection 6 MODIS fire product demonstrates significant performance improvements.
  • Algorithm enhancements effectively reduce false alarms and improve detection of large fires.
  • Expanded processing for water bodies enhances monitoring capabilities.