|
| EDG Data Set Name |
Granule Shortname |
| MODIS/Terra Albedo 16-Day L3 Global 0.05Deg CMG |
MOD43C1 |
| 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 |
Data Set Characteristics
Area = Global
Image Dimensions = 3 (3600x7200x10 row/column/band)
Average File Size = ~46 MB
Resolution = 0.05 degree (~5 km)
Projection = Latitude/Longitude Grid
Data Type Albedo = 16-bit Signed Integer
Data Type Quality = 32-bit Unsigned Integer
Data Format = HDF-EOS
Science Data Sets (SDS) = 3
Product Description
The 16-day 0.05Deg global albedo product (MOD43C1)
is a Level-3 Climate Modeling Grid product that provides measures of Earth's
white-sky and black-sky albedo. These measures are derived averages
computed from the 16-Day 1 km global albedo product (MOD43B3).
The 1 km global albedo is computed by integrating the Bi-directional Reflectance
Distribution Function (BRDF), which describes the characteristic anisotropy of
the land surface. The MODIS BRDF parameters are modeled by inverting
multi-date, multi-angular, cloud-free, atmospherically corrected surface
reflectance observations acquired by MODIS over a 16-day period.
Black-sky albedo and white-sky albedo mark the
extreme cases of both completely direct and diffuse illumination. Black-sky
albedo, or directional hemispherical reflectance, is defined as albedo in the
absence of a diffuse component and is a measure of a surface's relative
brightness when illuminated from a certain angle. MODIS black-sky albedo
is calculated at the solar zenith angle of local solar noon. White-sky
albedo, or bi-hemispherical reflectance, is defined as albedo in the absence of
a direct component when the diffuse component is isotropic.
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 |
SCALING FACTOR |
CALIBRATED NT |
| Global Black Sky Albedo |
Albedo |
16-bit signed integer |
32767 |
0-32766 |
0.001 |
5 |
| Global White Sky Albedo |
Albedo |
16-bit signed integer |
32767 |
0-32766 |
0.001 |
5 |
| Aggregated Albedo Quality |
Flags |
32-bit unsigned integer |
4294967295 |
0-4294967294 |
na |
na |
| QC Bit Description |
Quality Control Explanation |
| 00-01 Mandatory QA |
0 = Majority processed, good quality |
|
1 = Majority processed, see other QA |
|
2 = Majority not processed due to cloud effects |
|
3 = Majority not processed due to other effects |
| 02 Period used |
0 = 16 days |
|
1 = 32 days |
| 03-05 AM/MISR/PM* |
0 = AM |
|
1 = AM/PM |
|
2 = AM/PM/MISR |
|
3 = AM/MISR |
|
4 = PM |
|
5 = PM/MISR |
|
6 = MISR |
| 06-07 BRDF Quality |
0 = Majority full inversion |
|
1 = Majority magnitude inversion |
|
2 = Majority Bus-in DB parameters (not currently used) |
|
3 = Majority Fill value |
08-15 Percent Inputs |
0-100 (percent of the processed finer resolution data contributed to this
CMG pixel) |
16-23 Percent Snow |
0-100 |
| 24-27 Local Solar Noon |
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 degrees |
|
15 = >75 degrees |
| 28-30 TBD |
|
| 31 QAfill |
|
*AM is the original name of the of the first EOS satellite, indicative of its morning equator crossing. The platform is now called "Terra."
*PM is the original name of the second EOS satellite, indicative of its afternoon equator crossing. The platform is now called "Aqua."
*MISR is the Multi-angle Imaging Spectroradiometer, and is one of the five instruments currently flying on Terra.
Print or save this information in .pdf format
View .pdf version 
 Retrieve the MOD43C1v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e0dps01u.ecs.nasa.gov:22000/OPS/drill?attrib=esdt&esdt;=MOD43C1.4&group;=MOLT
Via FTP Directory: ftp://e0dps01u.ecs.nasa.gov/MOLT/MOD43C1.004/
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 Albedo 16-Day L3 Global 0.05Deg CMG |
| 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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