This data set is only available for a restricted user group, please contact us if you want to access these data.
RESTRICTED only accessable in CEN/MPI net or via CliSAP login What does that mean?
This data set comprises daily values of the gridded global land surface albedo derived from MODIS reflectance values observed at bands 1-7 for periods of 16 days. Depending on the availability data from EOS-TERRA and (after July 2002) EOS-AQUA are used.
We are offering the data set with a spatial resolution of 0.05° (about 5600 m). This is the first albedo data set of MODIS collection 006.
Note that the data set has been modified by us at ICDC. The landmask of the original data set was incomplete. It showed land surface albedo values over sea area like, e.g., the North Sea. The modified data set, which is offered here, contains information about the land-water distribution given in the MODIS land cover type data set to correct this bug.
We recommend the EOS-Data hand book for further reading.
Last update of data set at ICDC: September 6, 2019
Period and temporal resolution:
Missing days: June 24./25. 2001.
Coverage and spatial resolution:
The data offered here are in netCDF format. These include, in addition to the white sky albedo (reflection of diffuse radiation) its difference to the black sky albedo (reflection of direct radiation), a quality flag giving information about the quality of the inversion, the local solar noon, the percentage snow cover fraction, the BRDF-albedo retrieval uncertainty and the percentage number of valid, high-resolution data per grid cell.
For better understanding: white sky albedo --> isotropic incident radiation from all directions assuming no direct sunlight; black sky albedo --> direct radiation from only a given solar geometry.
Original data are available in HDF-EOS Format. These data include in addition the reflectance values for each channel, the white & black sky albedo calculated separately for the visible and near infrared part of the spectrum.
This data set, based on MODIS collection 006 data, features a number of improvements:
Attention! The original data set has been modified by us (ICDC). The land mask of the original data set was incomplete, i.e. showed land surface albedo values over open water areas, e.g. the North Sea. We have corrected this bug by including the land-water distribution provided on the same grid in the MODIS land cover type data set.
For more information please refer to the references.
LP DAAC User Services
Estimation and evaluation of the daily mean land surface albedo:
How to cite when using the data:
C. Schaaf, and Z. Wang, 2015, MCD43C3 MODIS/Terra+Aqua BRDF/Albedo Albedo Daily L3 Global 0.05 Deg CMG V006. NASA EOSDIS Land Processes DAAC: doi.org/10.5067/MODIS/MCD43C3.006, last access date: 23/08/2019.
Please note the source in your acknowledgements:
These data were provided in netCDF file format by the Integrated Climate Data Center (ICDC, http://icdc.cen.uni-hamburg.de), University of Hamburg, Hamburg, Germany.