The image above is a representation of the third of the three model parameters used to reconstruct surface anisotropic effects and thus correct directional reflectances to a common view geometry, or to compute integrated albedos. The colors describe the geometric LiSparseR (fgeo) weighting parameters for data acquired between January 17 and February 1, 2007.
The MODerate-resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo Model Parameters product (MCD43C1) contains the weighting parameters for the models used to derive the Albedo and NBAR products (MCD43C3 and MCD43C4). The models support the spatial relationship and parameter characterization best describing the differences in radiation due to the scattering (anisotropy) of each pixel, relying on multi-date, atmospherically corrected, cloud-cleared input data measured over 16-day periods.
Both Terra and Aqua data are used in the generation of this product, providing the highest probability for quality input data and designating it as an "MCD," meaning "Combined," product.
Version-5 MODIS/Terra+Aqua BRDF/Albedo products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts. Although there may be later improved versions, these data are ready for use in scientific publications.
Temporal Coverage | February 24, 2000 - |
Area | Global |
File Size | ~231 MB |
Projection | Latitude/Longitude Grid |
Data Format | HDF-EOS |
Dimensions | 3600 x 7200 rows/columns |
Resolution | 0.05 degrees (5600 kilometer) |
Science Data Sets (SDS HDF Layers) | 34 |
Science Data Sets for MODIS Terra+Aqua BRDF/Albedo Parameters 16-Day L3 Global 0.05Deg CMG V005 (MCD43C1):
Science Data Sets (HDF Layers) 34 |
UNITS |
BIT TYPE |
FILL |
VALID RANGE |
MULTIPLY BY SCALE FACTOR |
---|---|---|---|---|---|
BRDF_Quality | Quality Byte, no units | 8-bit unsigned integer | 255 | 0–254, (0–4 used) | na |
Local_Solar_Noon | Quality Byte, degrees | 8-bit unsigned integer | 255 | 0–254, (0–90 used) | na |
Percent_Inputs | Quality Byte, percent | 8-bit unsigned integer | 255 | 0–254, (0–100 used) | na |
Percent_Snow | Quality Byte, percent | 8-bit unsigned integer | 255 | 0–254, (0–100 used) | na |
BRDF_Albedo_Parameter1_Band1 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band2 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band3 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band4 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band5 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band6 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_Band7 (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_vis (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_nir (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter1_shortwave (Isotropic-iso) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band1 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band2 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band3 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band4 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band5 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band6 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_Band7 (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_vis (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_nir (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter2_shortwave (RossThick-vol) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band1 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band2 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band3 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band4 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band5 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band6 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_Band7 (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_vis (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_nir (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
BRDF_Albedo_Parameter3_shortwave (LiSparseR-geo) | BRDF parameters, no units | 16-bit signed integer | 32767 | 0–32766 | 0.0010 |
V005 MODIS Terra+Aqua BRDF/Albedo 0.05Deg CMG QA Science Data Sets
The table below lists the four Science Data Sets representing Quality in the BRDF/Albedo Parameters product, with applicable QC bit legends. Note that Local_Solar_Noon, Percent_Inputs, and Percent_Snow do not utilize their full 0–254 range (see below).
This information is excerpted from the file specifications for V005 MCD43C1.
Bit Comb. | BRDF_Albedo_Quality |
0 | best quality, 75% or more with best full inversions |
1 | good quality, 75% or more with full inversions |
2 | Mixed, 75% or less full inversions and 25% or less fill values |
3 | All magnitude inversions or 50% or less fill values |
4 | 50% or more fill values |
255 | FillValue |
Local_Solar_Noon | |
0-254 | Zenith Angle at local solar noon (0 - 180 degrees) |
255 | FillValue |
Percent_Inputs | |
0-254 | Percent of the processed finer resolution data which contributed to this CMG pixel (0 - 100%) |
255 | FillValue |
Percent_Snow | |
0-254 | Percent of underlying data flagged as snow (0 - 100%) |
255 | FillValue |
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In the event that data distributed from the Land Processes DAAC are incorporated into your research, please supply the following acknowledgment within your published work: "These data are distributed by the Land Processes Distributed Active Archive Center (LP DAAC), located at the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center (lpdaac.usgs.gov)." If possible, please e-mail or send us reprints/citations of papers or oral presentations based on data obtained from the LP DAAC (see below for mailing address and e-mail address). This will help us to stay informed of how the data are being utilized.
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47914 252nd Street
Sioux Falls, SD 57198-0001
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Please find links to (and information about) these data access tools on the Get Data Section of this Web Site.
U.S. Geological Survey (USGS)
Center for Earth Resources Observation and Science (EROS)
47914 252nd Street
Sioux Falls, SD 57198-0001
Phone Number: | 605-594-6116 |
Toll Free: | 866-573-3222 |
866-LPE-DAAC | |
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