What's New in Collection 6 MODIS Active Fire / Hotspot Data?
Collection 6 represents the best available MODIS active fire / thermal anomalies product. Key changes, as they relate to the active fire / hotspots distributed by FIRMS are listed below. For the most up to date information, please refer to the MODIS Collection 6 Active Fire Product User's Guide Revision B.
- Processing has been extended to oceans and other large water bodies to detect offshore gas flaring.
- Reduced incidence of false alarms caused by small forest clearings.
- Improved detection of small fires.
- Expanded sun-glint rejection.
- Slightly improved cloud masking.
- Slight adjustment of detection confidence calculation.
- FRP retrieval now performed using Wooster et al. (2003) approach.
- DayNight field added to the attribute table
- Version field updated to a string field in the attribute table
Download Collection 6 MODIS Active Fire Data.
Please note:
- The FIRMS Fire Email Alerts will be updated to distribute Collection 6 and VIIRS 375 m data.
- For data older than the last 7 days, please use the Archive Download Tool.
Attribute fields for NRT MODIS C6 fire data distributed by FIRMS
| Attribute | Short Description | Long Description |
|---|---|---|
| Latitude | Latitude | Center of 1km fire pixel but not necessarily the actual location of the fire as one or more fires can be detected within the 1km pixel. |
| Longitude | Longitude | Center of 1km fire pixel but not necessarily the actual location of the fire as one or more fires can be detected within the 1km pixel. |
| Brightness | Brightness temperature 21 (Kelvin) | Channel 21/22 brightness temperature of the fire pixel measured in Kelvin. |
| Scan | Along Scan pixel size | The algorithm produces 1km fire pixels but MODIS pixels get bigger toward the edge of scan. Scan and track reflect actual pixel size. |
| Track | Along Track pixel size | The algorithm produces 1km fire pixels but MODIS pixels get bigger toward the edge of scan. Scan and track reflect actual pixel size. |
| Acq_Date | Acquisition Date | Date of MODIS acquisition. |
| Acq_Time | Acquisition Time | Time of acquisition/overpass of the satellite (in UTC). |
| Satellite | Satellite | A = Aqua and T = Terra. |
| Confidence | Confidence (0-100%) | This value is based on a collection of intermediate algorithm quantities used in the detection process. It is intended to help users gauge the quality of individual hotspot/fire pixels. Confidence estimates range between 0 and 100% and are assigned one of the three fire classes (low-confidence fire, nominal-confidence fire, or high-confidence fire). |
| Version | Version (Collection and source) | Version identifies the collection (e.g. MODIS Collection 6) and source of data processing: Near Real-Time (NRT suffix added to collection) or Standard Processing (collection only). "6.0NRT" - Collection 6 NRT processing. "6.0" - Collection 6 Standard processing. Find out more on collections and on the differences between FIRMS data sourced from LANCE FIRMS and University of Maryland. |
| Bright_T31 | Brightness temperature 31 (Kelvin) | Channel 31 brightness temperature of the fire pixel measured in Kelvin. |
| FRP | Fire Radiative Power | Depicts the pixel-integrated fire radiative power in MW (megawatts). |
| DayNight | Day / Night | D = Daytime, N = Nighttime |
Page Last Updated: Oct 10, 2019 at 9:54 AM EDT
