VIIRS/JPSS1 Active Fires 6-Min L2 Swath 375m V002

Description

The Visible Infrared Imaging Radiometer Suite (VIIRS) Active Fires (VJ114IMG) Version 2 product is produced in 6-minute temporal satellite increments (swaths) at 375 meter resolution from the VIIRS sensor aboard the NOAA-20 satellite. This product is designed after the Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) Thermal Anomalies and Fire data products to promote the continuity of the Earth Observation System (EOS) mission. This data product can enable users to understand the location and intensity of fire events as well as thermal anomalies.The VJ114IMG product includes 26 science dataset layers to analyze key factors in fire detection, including atmospheric conditions (e.g., radiance, solar zenith angle, brightness temperature) and fuel type for the event. The fire mask layer in the VJ114IMG product is the primary layer and can be used to identify fires and other thermal anomalies such as volcanoes.Each swath of data is approximately 3,060 kilometers along track (long) and 3,060 kilometers across track (wide). The VJ114IMG product is also used to generate higher-level fire data products.Use of the [VJ103MODLL](https://doi.org/10.5067/viirs/vJ103modll.021) data product is required to apply accurate geolocation information to the VNP14IMG Science Datasets (SDS).Known Issues* For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=VIIRS).Improvements/Changes from Previous Version* Improved calibration algorithm and coefficients for entire NOAA-20 mission.* Improved geolocation accuracy and applied updates to fix outliers around maneuver periods.* Corrected the aerosol quantity flag (low, average, high) mainly over brighter surfaces in the mid- to high-latitudes such as desert and tropical vegetation areas. This has an impact on the retrieval of other downstream data products such as VJ113 Vegetation Indices and VJ143 Bidirectional Reflectance Distribution Function (BRDF)/Albedo.* Improved cloud mask input product for corrections along coastlines and artifacts from use of coarse resolution climatology data. * Replaced the land/water mask input product with the eight-class land/water mask from the VJ103 geolocation product that better aligns with MODIS.* More details can be found in this [VIIRS Land V2 Changes document](https://landweb.modaps.eosdis.nasa.gov/data/userguide/VIIRS_Land_C2_Changes_09152022.pdf).

Resources

Name Format Description Link
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://doi.org%2F10.5067%2FVIIRS%2FVJ114IMG.002
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2734197957-LPCLOUD
5 https://lpdaac.usgs.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F427%2FVNP14_User_Guide_V1.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F133%2FVNP14_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov%2Ffilespec%2FVIIRS%2F1%2FVNP14IMG
5 https://viirsland.gsfc.nasa.gov%2FVal_overview.html
5 https://viirsland.gsfc.nasa.gov%2FVal%2FFire_Val.html
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FVJ114IMG.002%2FVJ114IMG.A2024212.0654.002.2024212131840%2FBROWSE.VJ114IMG.A2024212.0654.002.2024212131840.1.jpg
5 https://landweb.modaps.eosdis.nasa.gov/
21 VJ114IMG.002 https://doi.org/10.5067/VIIRS/VJ114IMG.002
5 https://search.earthdata.nasa.gov/search?q=C2734197957-LPCLOUD
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 VNP14_User_Guide_V1.pdf https://lpdaac.usgs.gov/documents/427/VNP14_User_Guide_V1.pdf
33 VNP14_ATBD.pdf https://lpdaac.usgs.gov/documents/133/VNP14_ATBD.pdf
21 Val_overview.html https://viirsland.gsfc.nasa.gov/Val_overview.html
22 BROWSE.VJ114IMG.A2024212.0654.002.2024212131840.1.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/VJ114IMG.002/VJ114IMG.A2024212.0654.002.2024212131840/BROWSE.VJ114IMG.A2024212.0654.002.2024212131840.1.jpg
21 Fire_Val.html https://viirsland.gsfc.nasa.gov/Val/Fire_Val.html
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/VIIRS/1/VNP14IMG

Tags

  • earth-science-ecological-dynamics-biosphere-fire-ecology-fire-occurrence
  • earth-science-surface-thermal-properties-land-surface-land-surface-temperature

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