MCD43A3 v006

MODIS/Terra and Aqua Albedo Daily L3 Global 500 m SIN Grid


PI: Crystal Schaaf

Description

The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A3 Version 6 Albedo Model dataset is produced daily using 16 days of Terra and Aqua MODIS data at 500 meter (m) resolution. Data are temporally weighted to the ninth day of the 16 day which is reflected in the Julian date in the file name.

The MCD43A3 provides black-sky albedo (directional hemispherical reflectance) and white-sky albedo (bihemispherical reflectance) data at local solar noon for MODIS bands 1 through 7 and the visible, near infrared (NIR), and shortwave bands. Along with the albedo layers are the quality layers for each of the 10 bands.

read more

Characteristics

Improvements/Changes from Previous Versions

  • Observations are weighted to estimate the BRDF/Albedo on the ninth day of the 16-day period.
  • MCD43 products use the snow status weighted to the ninth day instead of the majority snow/no-snow observations from the 16-day period.
  • Better quality at high latitudes from use of all available observations for the acquisition period. Collection 5 used only four observations per day.
  • The MCD43 products use L2G-lite surface reflectance as input.
  • When there are insufficient high quality reflectances, a database with archetypal BRDF parameters is used to supplement the observational data and perform a lower quality magnitude inversion. This database is continually updated with the latest full inversion retrieval for each pixel.

Product Maturity

The MODIS BRDF/ALBEDO products have achieved stage 3 validation.

Collection and Granule

Collection

Characteristic Description
CollectionCombined MODIS
DOI10.5067/MODIS/MCD43A3.006
File Size~37 MB
Temporal ResolutionDaily
Temporal Extent2000-02-16 to Present
Spatial ExtentGlobal
Coordinate SystemSinusoidal
DatumN/A
File FormatHDF-EOS
Geographic Dimensions~1200 km x 1200 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers30
Columns/Rows2400 x 2400
Pixel Size~500 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
BRDF_Albedo_Band_Mandatory_Quality_Band1 BRDF Albedo Mandatory Quality for Band 1 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band2 BRDF Albedo Mandatory Quality for Band 2 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band3 BRDF Albedo Mandatory Quality for Band 3 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band4 BRDF Albedo Mandatory Quality for Band 4 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band5 BRDF Albedo Mandatory Quality for Band 5 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band6 BRDF Albedo Mandatory Quality for Band 6 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_Band7 BRDF Albedo Mandatory Quality for Band 7 Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_vis BRDF Albedo Mandatory Quality for vis broadband Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_nir BRDF Albedo Mandatory Quality for NIR broadband Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
BRDF_Albedo_Band_Mandatory_Quality_shortwave BRDF Albedo Mandatory Quality for shortwave broadband Bit Field 8-bit unsigned integer 255 N/A 0 to 254 N/A
Albedo_BSA_Band1 Black-Sky Albedo for Band 1 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band2 Black-Sky Albedo for Band 2 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band3 Black-Sky Albedo for Band 3 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band4 Black-Sky Albedo for Band 4 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band5 Black-Sky Albedo for Band 5 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band6 Black-Sky Albedo for Band 6 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band7 Black-Sky Albedo for Band 6 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_vis Black-Sky Albedo for vis broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_nir Black-Sky Albedo for NIR broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_shortwave Black-Sky Albedo for shortwave broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band1 White-Sky Albedo for Band 1 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band2 White-Sky Albedo for Band 2 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band3 White-Sky Albedo for Band 3 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band4 White-Sky Albedo for Band 4 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band5 White-Sky Albedo for Band 5 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band6 White-Sky Albedo for Band 6 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band7 White-Sky Albedo for Band 7 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_vis White-Sky Albedo for vis broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_nir White-Sky Albedo for NIR broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_shortwave White-Sky Albedo for shortwave broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001

Mandatory Quality bit index

Value Description
0 Processed, good quality (full BRDF inversions)
1 Processed, see other QA (magnitude BRDF inversions)
255 Fill Value

Known Issues

For complete information about the MCD43A3 known issues refer to the MODIS Land Quality Assessment website.

Documentation

Using the Data

Data In Action

Highlights from the Literature: April to June 2017

Tools

Citation

DOI: 10.5067/MODIS/MCD43A3.006

About the Image

Combined MODIS BRDF Albedo black-sky albedo band 1 data from the MCD43A3 product over western United States June 7, 2018.

View full-size image