|
| EDG Data Set Name |
Granule Shortname |
| MODIS/Terra Nadir BRDF-Adjusted Reflectance 16-Day L3 Global 1km SIN Grid |
MOD43B4 |
| Version |
Acquisition Range |
Science Quality Status |
| V003 |
August 29, 2002 (2002241) - October 7, 2002 (2002280) |
Provisional as of Nov 1, 2000 |
| V004 |
February 18, 2000 (2000049) |
Provisional as of Feb 18, 2000
Validated as of Nov 1, 2000 |
Nadir BRDF-Adjusted Reflectance of North America for August 13, 2002.
NIR (0.1-0.4) Red (0.0-0.16) Green (0.0-0.18)
Data Set Characteristics
Area = ~ 10° x 10° lat/long
Image Dimensions = 3 (1200x1200x7 row/column/band)
Average File Size = 30 MB
Resolution = 1000 meters
Projection = Sinusoidal
Data Format = HDF-EOS
Science Data Sets (SDSs) = 2
Product Description
Every 16 days, the MODIS BRDF/Albedo
Product (MOD43B) algorithm relies on multidate, atmospherically corrected,
cloud-cleared data and a semiempirical kernel-driven bidirectional reflectance
model to determine a global set of parameters describing the Bidirectional
Reflectance Distribution Function (BRDF) of the land surface. These one
kilometer gridded parameters are then used to determine directional
hemispherical reflectance ("black-sky albedo"), bihemispherical
reflectance ("white-sky albedo"), and nadir BRDF-adjusted reflectance
(NBAR) for seven narrow spectral bands and (in the case of albedo) three broad
bands. Since the parameters of the simple kernel-based BRDF model (RossThickLiSparseR are also provided, along with extensive quality information, the MODIS BRDF/Albedo
Product offers members of the global remote sensing and modeling community the
additional flexibility to derive reflectance and albedo measures particularly
suited to their specific applications.
MOD43B is a MODLAND
Level 3 Product and is provided globally as discrete 1200 by 1200 element tiles
in a Sinusoidal Grid projection in a HDF-EOS format. MOD43B1
provides the BRDF model parameters, MOD43B2
provides an alternative set of model parameters, MOD43B3
provides the black-sky albedo (at a solar zenith angle of local solar noon) and
the white-sky albedo, and MOD43B4 provides the NBAR value at the mean solar
zenith angle of the 16 day period. Quality information is replicated and
available with each quantity.
Note: These products are validated, meaning that product uncertainties are well
defined over a range of representative conditions. Although there may be later improved versions, these data are ready for use in scientific publications.
| SDS |
Units |
Data Type-bit |
Fill Value |
Valid Range |
Multiply by
Scale Factor |
Dimensions |
| Nadir_Reflectance |
Reflectance |
16-bit signed integer |
32767 |
0 - 32766 |
0.0001 |
1D X-Dim
2D Y-Dim
3D#Land Bands |
| *Nadir_Reflectance_Quality |
Concatenated Flags |
32-bit unsigned integer |
4294967295 |
0-4294967294 |
na |
1D X-Dim
2D Y-Dim
3D # QC Words |
QC Word One
(band independent) |
Description |
| 00-01 Mandatory QA |
0 = processed, good quality
1 = processed, see other QA
2 = not processed due to cloud effects
3 = not processed due to other effects |
| 02-03 Period used |
0 = 16 days
1 = 32 days |
| 04-07 Land/Water |
0 = Shallow ocean
1 = Land (Nothing else but land)
2 = Ocean and lake shorelines
3 = Shallow inland water
4 = Ephemeral water
5 = Deep inland water
6 = Moderate or continental ocean
7 = Deep ocean |
| 08-10 AM/MISR/PM |
0 = AM
1 = AM/PM
2 = AM/PM/MISR
3 = AM/MISR
4 = PM
5 = PM/MISR
6 = MISR |
| 11-15 Mean Solar Angle of the Overpass Time |
0 = 0-5 degrees
1 = 5-10 degrees
2 = 10-15 degrees
3 = 15-20 degrees
4 = 20-25 degrees
5 = 25-30 degrees
6 = 30-35 degrees
7 = 35-40 degrees
8 = 40-45 degrees
9 = 45-50 degrees
10= 50-55 degrees
11= 55-60 degrees
12= 60-65 degrees
13= 65-70 degrees
14= 70-75 degree
15= 75-80 degrees
16= 80-90 degrees |
| 16-17 Snow |
0 = no Snow
1 = Snow present |
| 18-30 TBD |
| 31 QAfill |
0 = not fill-value
1 = fill-value |
QC Word Two
(band dependent) |
Description |
| 00-03 Band 1 Quality |
0 = RMSE good, WoD(NBAR) good, WoD(WSA) good
1 = RMSE good, WoD(NBAR) good, WoD(WSA) moderate
2 = RMSE good, WoD(NBAR) moderate, WoD(WSA) good
3 = RMSE good, WoD(NBAR) moderate, WoD(WSA) moderate
4 = RMSE moderate, WoD(NBAR) good, WoD(WSA) good
5 = RMSE moderate, WoD(NBAR) good, WoD(WSA) moderate
6 = RMSE moderate, WoD(NBAR) moderate, WoD(WSA) good
7 = RMSE moderate, WoD(NBAR) moderate, WoD(WSA) moderate
9 = magnitude inversion (numobs >3&<7)
10= magnitude inversion (numobs <=3)
11= Bus-in DB parameters
15= Fill value |
| 04-07 Band 2 Quality (see explanation for band 1) |
| 08-11 Band 3 Quality (see explanation for band 1) |
| 12-15 Band 4 Quality (see explanation for band 1) |
| 16-19 Band 5 Quality (see explanation for band 1) |
| 20-23 Band 6 Quality (see explanation for band 1) |
| 24-27 Band 7 Quality (see explanation for band 1) |
| 28-30 TBD |
| 31 QAFill |
0 = not fill-value
1 = fill value |
Print or save this information in .pdf format
View .pdf version 
 Retrieve the MOD43B4v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e0dps01u.ecs.nasa.gov:22000/OPS/drill?attrib=esdt&esdt;=MOD43B4.4&group;=MOLT
Via FTP Directory: ftp://e0dps01u.ecs.nasa.gov/MOLT/MOD43B4.004/
Order Data through the EOS Data Gateway
( http://edcimswww.cr.usgs.gov/pub/imswelcome/)
EOS Data Gateway Search Tips
| Data Center: |
LPDAAC |
| Sensor: |
MODIS |
| Dataset: |
MODIS/Terra Nadir BRDF-Adjusted Reflectance 16-Day L3 Global 1km SIN Grid |
| Spatial: |
HORIZONTALTILENUMBER Max/Min VERTICALTILENUMBER Max/Min |
| Geographic Extent: |
Type Lat/Long Range or Draw on Map |
| Temporal Extent: |
2000-02-18 to present |
Product Information
Contact Information
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