MODIS/Terra+Aqua Land Surface BRF Daily L2G Global 500m, 1km and 10km SIN Grid V006

Description

The MCD19A1 Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the [MCD19A1 Version 6.1](https://doi.org/10.5067/MODIS/MCD19A1.061) data product. The MCD19A1 Version 6 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Multi-Angle Implementation of Atmospheric Correction (MAIAC) Land Surface Bidirectional Reflectance Factor (BRF) gridded Level 2 product produced daily at 500 meter (m) and 1 kilometer (km) pixel resolutions. The MCD19A1 product is corrected for atmospheric gases and aerosols using a new MAIAC algorithm that is based on a time series analysis and a combination of pixel- and image-based processing. The MODIS MAIAC Land Surface BRF products provide an estimate of the surface spectral reflectance as it would be measured at ground-level in the absence of atmospheric scattering or absorption. The MCD19A1 MAIAC Surface Reflectance data product includes 34 Science Dataset (SDS) layers: surface reflectance for bands 1-12, BRF uncertainty for bands 1-2, snow fraction, snow grain size, snow fit, Quality Assessment (QA) bits at 1 km, surface reflectance for bands 1-7 at 500 m, cosine of solar zenith angle, cosine of view zenith angle, relative azimuth angle, scattering angle, solar azimuth angle, view azimuth angle, glint angle, RossThick/Li-Sparse (RTLS) volumetric kernel, and RTLS geometric kernel at 5 km. A low-resolution browse image is also included showing surface reflectance band combination 1, 4, 3 created using a composite of all available orbits. Each SDS layer within each MCD19A1 Hierarchical Data Format 4 (HDF4) file contains a third dimension that represents the number of orbit overpasses. This factor could affect the total number of bands for each SDS layer. Known Issues * The longname in the internal metadata is provided incorrectly. The correct longname is "MODIS/Terra and Aqua MAIAC Land Surface BRF Daily L2G Global 500 m and 1 km SIN Grid." * Known issues are described on page 14 of the User Guide. * For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=MODIS&sat=TerraAqua&as=6).

Resources

Name Format Description Link
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://doi.org%2F10.5067%2FMODIS%2FMCD19A1.006
5 https://lpdaac.usgs.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F111%2FMCD19_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov%2Ffilespec%2FMODIS%2F6%2FMCD19A1
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://lpdaac.usgs.gov%2Fdocuments%2F110%2FMCD19_User_Guide_V6.pdf
5 https://landweb.modaps.eosdis.nasa.gov/
5 MCD19A1.006 https://doi.org/10.5067/MODIS/MCD19A1.006
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 MCD19_User_Guide_V6.pdf https://lpdaac.usgs.gov/documents/110/MCD19_User_Guide_V6.pdf
33 MCD19_ATBD.pdf https://lpdaac.usgs.gov/documents/111/MCD19_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MCD19A1
5 https://landweb.modaps.eosdis.nasa.gov
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2763289460-LPCLOUD.iso19115

Tags

  • earth-science-surface-radiative-properties-land-surface-reflectance
  • earth-science-cryospheric-indicators-climate-indicators-snow-cover
  • earth-science-glaciers-ice-sheets-cryosphere-firn-snow-grain-size

Topics

Categories