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MODIS 10-daily composite surface albedo time series of Canada - Revision 0

The MODIS surface albedo dataset was produced by the Canada Center for Remote Sensing (CCRS), Natural Resources Canada. The dataset represents the solar shortwave broadband surface albedo and it is at a 10-day interval covering the entire Canadian landmass as well as northern USA, Alaska, and the Greenland. The dataset was derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the TERRA satellite which provides a global coverage every 1-2 days in 36 spectral bands ranging from visible to infrared and to thermal wavelengths between 405 and 14,385 nm, and was available since 2000. For the estimation of surface albedo, the first seven spectral bands of B1 to B7 ranging from 459 nm to 2155 nm were used. B1 and B2 have a 250 meter resolution and B3 to B7 have a 500 meter resolution. A downscaling method using a regression and normalization scheme was employed to downscale the bands B3 to B7 to 250 meter resolution while preserving radiometric properties of the original data. To obtain clear-sky observations from MODIS, composite images for a 10 day period were generated by using a series of advanced algorithms (Luo et al., 2008). The 10-day composites of B1-B7 reflectance were then used to retrieve spatially continuous spectral albedo by using a combined land/snow BRDF (Bi-directional Reflectance Distribution Function) model. In that method, the modified RossThick-LiSparse BRDF model (Maignan et al., 2004) for land and Kokhanovsky and Zege’s model (2004) for snow are linearly combined for mixed surface conditions. They are weighted by snow fraction (0.0 ~ 1.0). The seven spectral albedo were then converted into the shortwave broadband surface albedo using the empirical MODIS polynomial conversion equation of Liang et al. (1999). The data product is in LCC (Lambert Conformal Conic) projection with a 250m pixel resolution. There are 36 albedo images per year. A dataset representing the pixel state (e.g. cloud/shadow, snow/ice, water, land, et al.) was also generated for each 10-day corresponding to the surface albedo product. References: Kokhanovsky, A. A. and Zege, E. P., 2004, Scattering Optics of Snow, Applied Optics, 43, 1589-1602, doi:10.1364/AO.43.001589, 20. Liang, S., Strahler, A.H., Walthall, C., 1999. Retrieval of land surface albedo from satellite observations: a simulation study. J. Appl. Meteorol. 38, 712–725. Luo, Y., Trishchenko, A.P., Khlopenkov, K.V., 2008. Developing clear-sky, cloud and cloud shadow mask for producing clear-sky composites at 250-meter spatial resolution for the seven MODIS land bands over Canada and North America. Remote Sens. Environ. 112, 4167–4185. Maignan, F., F.M. Bréon and R. Lacaze, 2004, Bidirectional reflectance of Earth targets : evaluation of analytical models using a large set of spaceborne measurements with emphasis with the hot spot, Remote Sens. Environ., 90, 210-220.

Simple

Date ( RI_366 )
2015-02-04
Date ( RI_367 )
2018-02-16
RI_414
  Government of Canada; Natural Resources Canada;Strategic Policy and Innovation Sector, Canada Centre for Remote Sensing
Physical; 560; Rochester Street , Ottawa , Ontario , K1A 0E4 , Canada
Presentation form
imageDigital; imageNumérique RI_389
Name
MODIS 10-daily composite surface albedo time series of Canada
Issue identification
2015
Purpose
Surface albedo is an important parameter for describing the radiative properties of the earth (http://modis-atmos.gsfc.nasa.gov/ALBEDO/ ). The products provide more than 10 yearslong-term record of 10-day shortwave broadband surface albedo measurements from MODIS for the entire Canadian landmass since 2000., Itwhich reflects the consequences of natural and human interactions on the surface properties over time. The products can be used for studying energy balance and climatestudies, assessing water cycle and water resources, modelling of land cover and land use change, and monitoring environmental changes related to human activities such as resources development, biophysical studies and meteorological studies.
Status
completed; complété RI_593
RI_414
  Government of Canada; Natural Resources Canada;Strategic Policy and Innovation Sector, Canada Centre for Remote Sensing
Physical; 560; Rochester Street , Ottawa , Ontario , K1A 0E4 , Canada
Maintenance and update frequency
unknown; inconnu RI_543
Keywords ( RI_528 )
  • Earth Sciences
  • Hydrosphere
  • Ground Water
  • Surface water
  • Hydropattern
  • Rivers
  • Land surface
  • Land Use
  • Land Cover
  • Landscapes
  • Ice
  • Surface albedo
Keywords ( RI_525 )
  • Canada
  • Alberta
  • British Columbia
  • Manitoba
  • New Brunswick
  • Newfoundland and Labrador
  • Northwest Territories
  • Nova Scotia
  • Nunavut
  • Ontario
  • Prince Edward Island
  • Québec
  • Saskatchewan
  • Yukon
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Earth sciences
  • Surface water
  • Ice
  • Radiation
Use constraints
otherRestrictions; autresRestrictions RI_609
Other constraints
A license agreement accompanies all value-added satellite products distributed via the NEODF. In addition to the terms and conditions which apply (see: http://data.gc.ca/eng/open-government-licence-canada ), none of these products may be redistributed. Please direct interested users to apply for NEODF accounts. To comply with Section 3.0, you must appropriately acknowledge the Canada Center for Mapping and Earth Observation, a part of Natural Resources Canada, as the source of these products when you use them in support of research, analysis, reporting, decisions, operations or any other undertaking. By adding these products to your cart, you agree to all the above requirements.
Use limitation
Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
grid; grille RI_636
Metadata language
eng; CAN
Topic category
  • Imagery base maps earth cover
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W
thumbnail


Begin date
2000
End date
2016
Reference system identifier
EPSG:3978

Date ( http://www.fgdc.gov/nap/metadata/register/registerItems.html#RI_367 )
2000-01-01
RI_418
 

Distribution format
  • ESRI REST ( 10.7.1 )

  • WMS ( 1.3.0 )

Distributor

RI_412
  Government of Canada; Natural Resources Canada;Strategic Policy and Innovation Sector, Federal Geospatial Platform
Fees
Free for download
Transfer size
1472184
OnLine resource
MODIS Albedo RGB 2000-2016 ( ESRI REST: Image Service )

Web Service;ESRI REST;eng

OnLine resource
MODIS Albedo RGB 2000-2016 ( ESRI REST: Image Service )

Web Service;ESRI REST;fra

Attribute description
Band-interleaved
Content type
http://www.fgdc.gov/nap/metadata/register/registerItems.html#RI_492
Name
Terra_MODIS_SW_BB_Albedo.Noon_250m.img
Name
16-bit unsigned integer
Descriptor
Surface shortwave broadband albedo
Bits per value
16
Scale factor
0.0001
Name
Terra_MODIS_VIS_BB_Albedo.Noon_250m.img
Name
16-bit unsigned integer
Descriptor
Surface visible broadband albedo
Bits per value
16
Scale factor
0.0001
Name
Terra_MODIS_NIR_BB_Albedo.Noon_250m.img
Name
16-bit unsigned integer
Descriptor
Surface near-infrared broadband albedo
Bits per value
16
Scale factor
0.0001
Name
Terra_MODIS_State_Mask_250m.img
Name
8-bit unsigned integer
Descriptor
State mask of each pixel
Bits per value
8
Scale factor
1
File identifier
02fd8f1b-d5d5-6073-e107-28c038ddcc9c XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2022-02-09T18:17:24
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_414
  Government of Canada; Natural Resources Canada;Strategic Policy and Innovation Sector, Canada Centre for Remote Sensing
Physical; 560; Rochester Street , Ottawa , Ontario , K1A 0E4 , Canada
 
 

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Spatial extent

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