| Attribute |
Long Description |
| Latitude |
Center of nominal 375 m fire pixel |
| Longitude |
Center of nominal 375 m fire pixel |
| Brightness temperature I-4(Kelvin) |
VIIRS I-4 channel brightness temperature of the fire pixel measured in Kelvin. |
| Acq_Date |
Date of VIIRS acquisition. |
| Acq_Time |
Time of acquisition/overpass of the satellite (in UTC). |
| Brightness temperature I-5(Kelvin) |
I-5 Channel brightness temperature of the fire pixel measured in Kelvin. |
| FRP(MW) |
FRP depicts the pixel-integrated fire radiative power in MW (megawatts). FRP depicts the pixel-integrated fire radiative power in MW (megawatts). Given the unique spatial and spectral resolution of the data, the VIIRS 375 m fire detection algorithm was customized and tuned in order to optimize its response over small fires while balancing the occurrence of false alarms. Frequent saturation of the mid-infrared I4 channel (3.55-3.93 µm) driving the detection of active fires requires additional tests and procedures to avoid pixel classification errors. As a result, sub-pixel fire characterization (e.g., fire radiative power [FRP] retrieval) is only viable across small and/or low-intensity fires. Systematic FRP retrievals are based on a hybrid approach combining 375 and 750 m data. In fact, starting in 2015 the algorithm incorporated additional VIIRS channel M13 (3.973-4.128 µm) 750 m data in both aggregated and unaggregated format. |
| DayNight |
D= Daytime fire, N= Nighttime fire |
