VIIRS/JPSS1 BRDF/Albedo Model Parameters Daily L3 Global 1km SIN Grid NRT

Description

The VIIRS/JPSS1 BRDF/Albedo Model Parameters Daily L3 Global 1 km SIN Grid Near Real Time (NRT), short-name VJ143MA1N product provides BRDF/Albedo model parameters at 1 km resolution. The VJ143MA1N product is produced daily using 16-day VIIRS data (i.e., the current day and the previous 15 days). The algorithm uses the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model, with the three kernel weights from VJ143MA1N to reconstruct surface anisotropic effects, correcting the directional reflectance to a common view geometry (VJ143MA4N), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VJ143MA3N). Researchers can use the BRDF model parameters with a simple polynomial, to obtain black-sky albedo at any solar illumination angle. Likewise, both the BSA and WSA Science Dataset (SDS) layers can be used with a simple polynomial, to manually estimate instantaneous actual albedo (blue-sky albedo). Additional details regarding the methodology are available in the Algorithm Theoretical Basis Document (ATBD) at https://www.umb.edu/editor_uploads/images/school_for_the_environment_cs/Viirs/VIIRS_ATBD_Apr_Jul2017.pdf The VJ143MA1N data product provides a total of 24 SDS layers including: mandatory quality bands and three multi-dimensional model parameter bands representing fiso, fvol, and fgeo for VIIRS moderate resolution bands: M1-M5, M7-M8, and M10-M11.

Resources

Name Format Description Link
5 https://earthdata.nasa.gov%2Fearth-observation-data%2Fnear-real-time%2Fdownload-nrt-data%2Fviirs-nrt
5 https://nrt3.modaps.eosdis.nasa.gov%2Farchive%2FallData%2F5200%2FVJ143MA1N%2F
5 https://nrt3.modaps.eosdis.nasa.gov/archive/allData/5200/VJ143MA1N/
5 https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/viirs-nrt
5 https://nrt3.modaps.eosdis.nasa.gov/archive/allData/5200/VJ143IA3N/
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2808098739-LANCEMODIS.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

Topics

Categories