Evaluation of Moderate Resolution Imaging Spectroradiometer land surface visible and shortwave albedo products at FLUXNET sites

[1] We evaluated the accuracy of Moderate Resolution Imaging Spectroradiometer (MODIS) Collections 4 and 5 shortwave and visible albedo products at 18 FLUXNET sites globally from 2000 to 2007. While the shortwave product has been evaluated at a number of field sites, this represents the first attempt to assess the visible product. The surface visible albedo product relies more on quality of the atmospheric correction because atmospheric molecular scattering and aerosol absorption and scattering have larger impact on visible radiation than that on infrared radiation. The results show that in general the MODIS Collection 4 visible albedo product has an overall negative bias of −0.015, with a standard deviation (SD) error of 0.014 and a correlation coefficient of 0.88. The numbers are −0.010, 0.015, and 0.87 for Collection 5 visible albedo products. MODIS Collection 4 shortwave albedo product has an overall negative bias of −0.009, with a SD error of 0.023 and a correlation coefficient of 0.82. The numbers are −0.008, 0.023, and 0.80 for Collection 5 shortwave albedo products. A comparison of the site−averaged albedos shows that Collection 4 visible (shortwave) albedo has a SD of 0.009 (0.017) and a correlation coefficient of 0.94 (0.90), similar to the Collection 5 SD of 0.008 (0.017) and the correlation coefficient of 0.95 (0.89).

[1]  Feng Gao,et al.  Using MODIS BRDF and albedo data to evaluate global model land surface albedo , 2004 .

[2]  T. Chase,et al.  Representing a new MODIS consistent land surface in the Community Land Model (CLM 3.0) , 2007 .

[3]  E. Vermote,et al.  Operational Atmospheric Correction of MODIS Visible to Middle Infrared Land Surface Data in the Case of an Infinite Lambertian Target , 2006 .

[4]  C. Justice,et al.  Atmospheric correction of MODIS data in the visible to middle infrared: first results , 2002 .

[5]  W. Oechel,et al.  FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities , 2001 .

[6]  N. C. Strugnell,et al.  First operational BRDF, albedo nadir reflectance products from MODIS , 2002 .

[7]  S. Brand.  Earth Monitoring: Whole Earth comes into focus , 2007, Nature.

[8]  Shunlin Liang,et al.  Global atmospheric downward longwave radiation over land surface under all‐sky conditions from 1973 to 2008 , 2009 .

[9]  S. Liang.  Quantitative Remote Sensing of Land Surfaces , 2003 .

[10]  R. Dickinson,et al.  Clear Sky Visibility Has Decreased over Land Globally from 1973 to 2007 , 2009, Science.

[11]  Alan H. Strahler,et al.  A Comparison of Satellite-Derived Spectral Albedos to Ground-Based Broadband Albedo Measurements Modeled to Satellite Spatial Scale for a Semidesert Landscape , 2000 .

[12]  Feng Gao,et al.  Development of land surface albedo parameterization based on Moderate Resolution Imaging Spectroradiometer (MODIS) data , 2005 .

[13]  Chad J. Shuey,et al.  Validating MODIS land surface reflectance and albedo products: methods and preliminary results , 2002 .

[14]  C. Woodcock,et al.  Consistency of MODIS surface bidirectional reflectance distribution function and albedo retrievals: 2. Validation , 2003 .

[15]  Alan H. Strahler,et al.  Validation of the MODIS bidirectional reflectance distribution function and albedo retrievals using combined observations from the aqua and terra platforms , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[16]  Ann Henderson-Sellers,et al.  Surface albedo data for climatic modeling , 1983 .

[17]  Bernhard Geiger,et al.  Land Surface Albedo Derived on a Daily Basis From Meteosat Second Generation Observations , 2008, IEEE Transactions on Geoscience and Remote Sensing.

[18]  A. Strahler,et al.  Retrieval of Land Surface Albedo from Satellite Observations: A Simulation Study , 1999 .

[19]  Xiuji Zhou,et al.  Validation of the MODIS global land surface albedo product using ground measurements in a semidesert region on the Tibetan Plateau , 2004 .

[20]  K. Oleson,et al.  Assessment of global climate model land surface albedo using MODIS data , 2003 .

[21]  Francisco P. J. Valero,et al.  Albedo-watching satellite needed to monitor change , 2008, Nature.

[22]  Crystal B. Schaaf,et al.  Accuracy assessment of the MODIS 16-day albedo product for snow: comparisons with Greenland in situ measurements , 2005 .

[23]  Feng Gao,et al.  Use of Moderate-Resolution Imaging Spectroradiometer bidirectional reflectance distribution function products to enhance simulated surface albedos , 2004 .

[24]  Xubin Zeng,et al.  Moderate Resolution Imaging Spectroradiometer bidirectional reflectance distribution function-based albedo parameterization for weather and climate models , 2007 .

[25]  R. Dickinson,et al.  Comparison of seasonal and spatial variations of albedos from Moderate-Resolution Imaging Spectroradiometer (MODIS) and Common Land Model , 2003 .