VIIRS/JPSS1 BRDF/Albedo BSA at Solar Noon Band M11 Daily L3 Global 30ArcSec CMG V002

Description

The NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Black-Sky Albedo for Band M11 (VJ143D62) is produced daily using 16 days of data at 30 arc second (1,000 meter) resolution. Data are temporally weighted to the ninth day, which is reflected in the file name. The VJ143D product suite is provided in a Climate Modeling Grid (CMG), which covers the entire globe for use in climate simulation models. Due to the large file size, each VJ143D product contains just one data layer. VJ143D54 through VJ143D79 are the albedo products of the VJ143D BRDF/Albedo product suite. Black-sky albedo (BSA) and white-sky albedo (WSA) values are provided for the nine VIIRS moderate resolution bands (M1 through M5, M7, M8, M10, and M11) along with the visible, near-infrared (NIR), and shortwave bands included in the [VJ143MA3](https://doi.org/10.5067/VIIRS/VJ143MA3.002) product. In addition to the bands included in VJ143MA3, this product suite includes albedo values for the VIIRS Day/Night Band (DNB). The black-sky albedo (directional hemispherical reflectance) is defined as albedo in the absence of a diffuse component and is a function of solar zenith angle. White-sky albedo (bihemispherical reflectance) is defined as albedo in the absence of a direct component when the diffuse component is isotropic. Details regarding methodology are available on the VJ143MA3 product page and in the Algorithm Theoretical Basis Document (ATBD). VJ143D62 is the BSA for VIIRS band M11 (2.25 μm). 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). Improvements/Changes from Previous Versions The NOAA-20 VIIRS algorithms include the same improvements as the S-NPP VIIRS V002 * Improved calibration algorithm and better coefficients for entire NOAA-20 mission * Improved geolocation accuracy and updates to fix outliers around maneuver periods and other events * Corrections to 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 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 MODIS heritage seven class land/water mask

Resources

Name Format Description Link
5 https://viirsland.gsfc.nasa.gov%2FVal_overview.html
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2842035738-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://doi.org%2F10.5067%2FVIIRS%2FVJ143D62.002
5 https://lpdaac.usgs.gov%2F
5 https://www.umb.edu%2Fspectralmass%2Fviirs-user-guides-c1-and-c2%2Fvnp43d-cmg-30-arc-second-products%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F194%2FVNP43_ATBD_V1.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov%2Ffilespec%2FVIIRS%2F2%2FVNP43D62
5 https://viirsland.gsfc.nasa.gov%2FVal%2FAlbedo_Val.html
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://search.earthdata.nasa.gov/search?q=C2842035738-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov/
21 VJ143D62.002 https://doi.org/10.5067/VIIRS/VJ143D62.002
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 VNP43_ATBD_V1.pdf https://lpdaac.usgs.gov/documents/194/VNP43_ATBD_V1.pdf
21 Albedo_Val.html https://viirsland.gsfc.nasa.gov/Val/Albedo_Val.html
21 Val_overview.html https://viirsland.gsfc.nasa.gov/Val_overview.html
5 https://www.umb.edu/spectralmass/viirs-user-guides-c1-and-c2/vnp43d-cmg-30-arc-second-products/
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/VIIRS/2/VNP43D62
5 https://search.earthdata.nasa.gov/search?q=vemap-1_scenario_223&ac=true
21 https://doi.org/10.3334/ORNLDAAC/223
57 vemap-1_scenario_223.zip https://data.ornldaac.earthdata.nasa.gov/protected/bundle/vemap-1_scenario_223.zip
34 vemap_logo_square.png https://daac.ornl.gov/graphics/browse/project/square/vemap_logo_square.png
5 VEMAPDOC.txt https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/VEMAPDOC.txt
5 SVF_FORMAT.txt https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/SVF_FORMAT.txt
33 Phase_1_User_Guide.pdf https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/Phase_1_User_Guide.pdf
5 README.vem https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/README.vem
5 CORRECT.txt https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/CORRECT.txt
5 README.SCE https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/README.SCE
33 scenarios.pdf https://data.ornldaac.earthdata.nasa.gov/public/vemap/vemap-1_scenario/comp/scenarios.pdf
5 https://search.earthdata.nasa.gov/search?q=C2842035738-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov
5 VJ143D62.002 https://doi.org/10.5067/VIIRS/VJ143D62.002
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://www.umb.edu/spectralmass/viirs-user-guides-c1-and-c2/vnp43d-cmg-30-arc-second-products/
33 VNP43_ATBD_V1.pdf https://lpdaac.usgs.gov/documents/194/VNP43_ATBD_V1.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/VIIRS/2/VNP43D62
21 Albedo_Val.html https://viirsland.gsfc.nasa.gov/Val/Albedo_Val.html
21 Val_overview.html https://viirsland.gsfc.nasa.gov/Val_overview.html
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2842035738-LPCLOUD.iso19115

Tags

  • earth-science-surface-radiative-properties-land-surface-reflectance
  • earth-science-surface-radiative-properties-land-surface-anisotropy
  • earth-science-surface-radiative-properties-land-surface-albedo

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