Multiscale climatological albedo look-up maps derived from moderate resolution imaging spectroradiometer BRDF/albedo products

作者：Gao Feng^*; He Tao; Wang Zhuosen; Ghimire Bardan; Shuai Yanmin; Masek Jeffrey; Schaaf Crystal; Williams Christopher

来源：Journal of Applied Remote Sensing, 2014, 8(1): 083532.

DOI：10.1117/1.JRS.8.083532

• albedo
• look-up table
• radiative forcing
• moderate resolution imaging spectroradi-ometer
• climate change

Surface albedo determines radiative forcing and is a key parameter for driving Earth's climate. Better characterization of surface albedo for individual land cover types can reduce the uncertainty in estimating changes to Earth's radiation balance due to land cover change. This paper presents albedo look-up maps (LUMs) using a multiscale hierarchical approach based on moderate resolution imaging spectroradiometer (MODIS) bidirectional reflectance distribution BRDF)/albedo products and Landsat imagery. Ten years (2001 to 2011) of MODIS BRDF/albedo products were used to generate global albedo climatology. Albedo LUMs of land cover classes defined by the International Geosphere-Biosphere Programme (IGBP) at multiple spatial resolutions were generated. The albedo LUMs included monthly statistics of white sky (diffuse) and black sky (direct) albedo for each IGBP class for visible, near infrared, and shortwave broadband under both snow free and snow covered conditions. The albedo LUMs were assessed by using the annual MODIS IGBP land cover map and the projected land use scenarios from the Intergovernmental Panel on Climate Change land use harmonization project. The comparisons between the reconstructed albedo and the MODIS albedo data product show good agreement. The LUMs provide high temporal and spatial resolution global albedo statistics without gaps for investigating albedo variations under different land cover scenarios and could be used for land surface modeling.

• 出版日期2014-11-5