Subarctic Boreal Forest Albedo Estimation Using Envisat/asar and Spot

نویسندگان

  • Terhikki Manninen
  • Aku Riihelä
چکیده

Optical satellite albedo observations of forests suffer from understory contamination, but C-band microwave reacts mostly with the canopy. This paper studies whether or not adding ASAR backscattering information could enhance optical albedo retrieval accuracy. We compare SPOT-4-retrieved reflectances combined with ASAR backscattering ratios with solely optically retrieved SPOT-4 NIR albedo, and a MODIS 16-day NIR albedo product in a subarctic boreal forest test area. The results suggest that microwave augmentation of optical data can improve albedo retrieval accuracy.

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تاریخ انتشار 2009