VIIRS/NPP Surface Reflectance Daily L2G Global 1km and 500m SIN Grid V001

Description

The Visible Infrared Imaging Radiometer Suite (VIIRS) (https://lpdaac.usgs.gov/dataset_discovery/viirs) daily surface reflectance (VNP09GA) Version 1 product provides an estimate of land surface reflectance from the Suomi National Polar-Orbiting Partnership (Suomi NPP) VIIRS sensor. Data are provided for three imagery bands (I1-I3) at nominal 500 meter resolution (~ 463 meter) and nine moderate resolution bands (M1-M5, M7, M8, M10, M11) at nominal 1 kilometer (~926 meter) resolution. The 500 meter and 1 kilometer datasets are derived through resampling the native 375 meter and 750 meter VIIRS resolutions, respectively, in the Level 2 input product. These bands are corrected for atmospheric conditions such as the effects of molecular gases, including ozone and water vapor, and for the effects of atmospheric aerosols. The inputs to the surface reflectance algorithm are top-of-atmosphere reflectance for the VIIRS visible bands, the VIIRS cloud mask and aerosol product, aerosol optical thickness and atmospheric data obtained from the NOAA National Centers for Environmental Prediction (NCEP) reanalysis system. Along with the twelve reflectance bands are reflectance band quality, sensor azimuth angle, solar azimuth angle, sensor zenith angle, solar zenith angle, and observations layers. The reflectance layers from the VNP09GA data product are used as input data for many of the VIIRS land products.

Resources

Name Format Description Link
21 Quality Assessment provides information regarding the usability and usefulness of the data product. https://landweb.modaps.eosdis.nasa.gov/NPP_QA/
21 LP DAAC Data Pool provides direct access to available products via HTTPS. https://e4ftl01.cr.usgs.gov/VIIRS/VNP09GA.001/
21 OPeNDAP provides direct access to data via HTTPS. https://opendap.cr.usgs.gov/opendap/hyrax/VNP09GA.001/contents.html
33 The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. https://lpdaac.usgs.gov/documents/122/VNP09_ATBD.pdf
21 Browse image for Earthdata Search https://e4ftl01.cr.usgs.gov//WORKING/BRWS/Browse.001/2019.07.02/BROWSE.VNP09GA.A2019182.h19v04.001.2019183070609.1.jpg?_ga=2.79669204.116070394.1561987039-1109527761.1561753117
21 Validation at stage 1 has been achieved for the VIIRS surface reflectance product suite. https://viirsland.gsfc.nasa.gov/Val/LSR_Val.html
21 USGS EarthExplorer provides users the ability to query, search, and order products available from the LP DAAC. https://earthexplorer.usgs.gov/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FVIIRS%2FVNP09GA.001
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/VNP09GA.001
21 The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products. https://lpdaac.usgs.gov/
33 The technical information in the Version 1.6 User's Guide enables users to interpret and use the data products. https://lpdaac.usgs.gov/documents/124/VNP09_User_Guide_V1.6.pdf
21 Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. https://search.earthdata.nasa.gov/search?q=C1373412034-LPDAAC_ECS
33 The technical information in the Version 1.1 User's Guide enables users to interpret and use the data products. https://lpdaac.usgs.gov/documents/123/VNP09_User_Guide_V1.1.pdf
21 Further details regarding VIIRS product validation and maturity status are available from VIIRS Land Product Quality Assessment site. https://landweb.modaps.eosdis.nasa.gov/cgi-bin/NPP_QA/NPPpage.cgi?fileName=maturity&subdir=forPage%23
21 The Application for Extracting and Exploring Analysis Ready Samples (AρρEEARS) offers a simple and efficient way to perform data access and transformation processes. https://lpdaacsvc.cr.usgs.gov/appeears/

Tags

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

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