VIIRS/NPP BRDF/Albedo Model Parameters Daily L3 Global 0.05Deg CMG V001

Description

The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Model Parameters Daily Global 0.05 Degree Climate Modeling Grid (CMG) Version 1 product (VNP43C1) is derived from the 30 arc second CMG VNP43D Version 1 product suite. VNP43C1 is generated daily from all available high-quality reflectance data over a 16-day moving window emphasizing the ninth day of the retrieval period, which is reflected in the Julian date in the filename. VNP43C1 supplies the weighting parameters associated with the RossThick/Li-Sparse-Reciprocal BRDF model that best describes the anisotropy of each pixel, which is used to produce the VNP43C3 Albedo and VNP43C4 Nadir BRDF-Adjusted Reflectance (NBAR) products. The highest quality full inversion values are used for the temporal fitting effort and supplemented with lower quality pixels, spatial fitting, and spatial smoothing as needed. The status of each pixel can be found in the ancillary layers. Users are encouraged to assess the quality information before using the BRDF/Albedo data. This 0.05 degree (5,600 meters at the equator) CMG product covers the entire globe for use in climate simulation models. The VNP43C1 product includes 39 layers containing the three parameters (fiso, fvol, and fgeo) for the VIIRS Day/Night band (DNB), moderate resolution bands M1 through M5, M7, M8, M10, and M11, as well as the shortwave band, visible band, and near-infrared (NIR) broadbands. Along with the parameter data for the 13 bands are five ancillary layers for uncertainty, quality, local solar noon, percent finer resolution inputs, and snow cover. A low-resolution browse is also provided showing BRDF/Albedo parameters for bands M5, M4, and M3 as a red, green, blue (RGB) image in JPEG format.

Resources

Name Format Description Link
21 The File Specification provides a description of the product file including Scientific Data Sets and their attributes. https://ladsweb.modaps.eosdis.nasa.gov/filespec/VIIRS/1/VNP43C1
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FVIIRS%2FVNP43C1.001
20 LP DAAC Data Pool provides direct access to available products via HTTPS. https://e4ftl01.cr.usgs.gov/VIIRS/VNP43C1.001/
21 The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products. https://lpdaac.usgs.gov/
20 Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. https://search.earthdata.nasa.gov/search?q=C1629256929-LPDAAC_ECS
21 Access data via Open-source Project for a Network Data Access Protocol. https://opendap.cr.usgs.gov/opendap/hyrax/VNP43C1.001/contents.html
21 The technical information in the User's Guide enables users to interpret and use the data products. https://www.umb.edu/spectralmass/viirs/viirs_user_guide/vnp43c1_cmg_brdf_albedo_model_parameters_product
33 The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. https://lpdaac.usgs.gov/documents/194/VNP43_ATBD_V1.pdf
21 Further details regarding VIIRS product validation and maturity status are available from VIIRS Land Product Quality Assessment site. https://viirsland.gsfc.nasa.gov/Val_overview.html
21 Product Quality information regarding the usability and usefulness of the data product. https://landweb.modaps.eosdis.nasa.gov/NPP_QA/
21 Browse image for Earthdata Search https://e4ftl01.cr.usgs.gov/WORKING/BRWS/Browse.001/2019.12.26/BROWSE.VNP43C1.A2019352.001.2019360115739.1.jpg?_ga=2.133172878.1882281295.1577729098-2066674673.1574795892
21 Validation at stage 2 has been achieved for the VIIRS BRDF/Albedo product suite. https://viirsland.gsfc.nasa.gov/Val/Albedo_Val.html
21 The LP DAAC product page provides information on Science Data Set layers and links for user guides, ATBDs, data access, tools, customer support, etc. https://doi.org/10.5067/VIIRS/VNP43C1.001

Tags

  • land-surface
  • surface-radiative-properties
  • earth-science

Topics

Categories