N: 90 S: -90 E: 180 W: -180
Description
The Visible Infrared Imaging Radiometer Suite (VIIRS) FIre Light Detection Algorithm-2 (FILDA-2) Modified Combustion Efficiency (MCE) Version 2 swath product (VJ147IMG) is produced in 6-minute orbit segments 375 meter (m) resolution from the VIIRS sensor aboard the NOAA-20 satellite. The VJ147IMG product takes advantage of the rich information that visible band observation conveys at night to assess fire combustion efficiency and enhance fire detection. It also utilizes improvements made in fire detection algorithms to detect smaller and cooler fires.
The VJ147IMG product includes 83 layers containing fire detection and retrievals of Radiative Power (FRP), fire Visible Energy Fraction (VEF), and Modified Combustion Efficiency (MCE).
Known Issues
- Known issues can be found in Section 5 of the User Guide.
- For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.
Version Description
Product Summary
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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File Naming Convention
The file name begins with the Product Short Name (VJ147IMG) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025225), the Hours and Minutes of Acquisition provided as HHMM (0842), the Version of the data collection (002), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025225144057), and the Data Format (nc).
Documents
USER'S GUIDE
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
SCIENCE DATA PRODUCT VALIDATION
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| Algorithm_QA | Algorithm_QA | N/A | uint32 | 4294967295 | N/A | N/A |
| DNB_observations | DNB radiance of fire pixel | nW/sr/m² | uint32 | 9 | N/A | N/A |
| Fire_mask | Fire_mask | N/A | int8 | -127 | N/A | N/A |
| FP_AdjCloud | Number of adjacent cloud pixel | N/A | int8 | -127 | N/A | N/A |
| FP_AdjWater | Number of adjacent water pixel | N/A | int8 | -127 | N/A | N/A |
| FP_Area | Pixel area | m² | float32 | 9 | N/A | N/A |
| FP_BG_Temp | Estimated background temperature | Kelvin | float32 | 9 | N/A | N/A |
| FP_Bowtie | Fraction of bowtie effect | N/A | float32 | 9 | N/A | N/A |
| FP_BTD_MAD | Background brightness temperature difference mean absolute deviation (I04-I05) | Kelvin | float32 | 9 | N/A | N/A |
| FP_BTD_Mean | Mean background brightness temperature difference (I04-I05) | Kelvin | float32 | 9 | N/A | N/A |
| FP_CM | Cloud Mask | N/A | int8 | -127 | N/A | N/A |
| FP_Confidence | Detection confidence | N/A | int8 | -127 | N/A | N/A |
| FP_DNB_POS | DNB abnormal possibility | N/A | float32 | 9 | N/A | N/A |
| FP_Fire_Frac | Estimated fire fraction | N/A | float32 | 9 | N/A | N/A |
| FP_Fire_Temp | Estimated fire temperature | Kelvin | float32 | 9 | N/A | N/A |
| FP_Gas_Flaring | Gas Flaring flag | N/A | int8 | -127 | N/A | N/A |
| FP_I04_BT | I04 (3.74 um) brightness temperature of fire pixel | Kelvin | float32 | 9 | N/A | N/A |
| FP_I04_MAD | Background I04 (3.74 um) brightness temperature mean absolute deviation | Kelvin | float32 | 9 | N/A | N/A |
| FP_I04_Mean | I04 (3.74 um) brightness temperature of background | Kelvin | float32 | 9 | N/A | N/A |
| FP_I04_Rad | I04 (3.74 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_I04_Rad_Mean | Background mean I04 (3.74 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_I04_Rad_Num | Number of background I04 (3.74 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_I05_BT | I05 (11.45 um) brightness temperature of fire pixel | Kelvin | float32 | 9 | N/A | N/A |
| FP_I05_MAD | Background I05 (11.45 um) brightness temperature mean absolute deviation | Kelvin | float32 | 9 | N/A | N/A |
| FP_I05_Mean | I05 (11.45 um) brightness temperature of background | Kelvin | float32 | 9 | N/A | N/A |
| FP_I05_Rad | I05 (11.45 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_I05_Rad_Mean | Background mean I05 (11.45 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_I05_Rad_Num | Number of background I05 (11.45 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_IMG_BTD | Brightness temperature of fire pixel (I04-I05) | Kelvin | float32 | 9 | N/A | N/A |
| FP_Land_Type | MODIS Land cover product MCD12C1 | N/A | int8 | -127 | N/A | N/A |
| FP_Latitude | Latitude of fire pixel | Degree | float32 | 9 | N/A | N/A |
| FP_Line | Granule line of fire pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_Longitude | Longitude of fire pixel | Degree | float32 | 9 | N/A | N/A |
| FP_M07_Rad | M07 (0.865 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M07_Rad_Mean | Background mean M07 (0.865 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M07_Rad_Num | Number of background M07 (0.865 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_M08_Rad | M08 (1.24 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M08_Rad_Mean | Background mean M08 (1.24 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M08_Rad_Num | Number of background M08 (1.24 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_M10_Rad | M10 (1.61 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M10_Rad_Mean | Background mean M10 (1.61 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M10_Rad_Num | Number of background M10 (1.61 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_M11_Rad | M11 (2.25 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M11_Rad_Mean | Background mean M11 (2.25 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M11_Rad_Num | Number of background M11 (2.25 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_M12_Rad | M12 (3.7 um) radiance of the fire pixel | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M12_Rad_Mean | Background mean M12 (3.7 um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M12_Rad_Num | Number of background M12 (3.7 um) pixel | N/A | int16 | -32767 | N/A | N/A |
| FP_M13_Rad | M13 (4.05 um) radiance for FRP calculation | W/m²/sr/μm | float32 | 9 | N/A | N/A |
| FP_M13_Rad_MAD | Background median absolute devaiation of M13 (4.05um) radiance | W/m²/sr/μm | float32 | 9 | N/A | N/A |