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Evaluation and use of CBERS-2 digital data for glacier inventories

In this paper, we describe the glacier baseline inventory carried out for the Cordillera Tres Cruces (67°22'67°32'W and 16°47' 16°09'S), Bolivia, and provide information on its glacier state in 2004. A geo-rectified ChinaBrazil Earth Resources Satellite (CBERS-2) scene acquired on 19 May 2004 was employed for delimitation of glacier catchment areas and snow line position. To validate the results, we overlayed the resulting glacier outlines on an ASTER band-ratio image. Final results showed errors (≈ ± 40 m) due the different spatial resolutions and georectification of the images. This study constitutes potential contribution to the international project Global Land Ice Measurements from Space, and towards a low-cost glacier monitoring program for the Andean region.