New developments and results for snowcover monitoring using RADARSAT and VEGETATION data and the HYDROTEL hydrological model

Fortin, Jean‐Pierre; Bernier, Monique; Savary, Stéphane; Battay, Ali El; Khaldoune, Jalal

doi:10.1109/igarss.2002.1024994

Cited by 1 publication

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“…The NDSI has since been widely used with different sensors (e.g. Fortin and others, 2001; Hall and others, 2002; Salomonson and Appel, 2004). The NDSI value is proportional to the snow cover rate of the pixel and allows a monitoring of the spatial and temporal snow cover variations (Chaponnière and others, 2005).…”

Section: Methodsmentioning

confidence: 99%

Monitoring of seasonal glacier mass balance over the European Alps using low-resolution optical satellite images

et al. 2016

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ABSTRACT. We explore a new method to retrieve seasonal glacier mass balances (MBs) from lowresolution optical remote sensing. We derive annual winter and summer snow maps of the Alps during 1998-2014 using SPOT/VEGETATION 1 km resolution imagery. We combine these seasonal snow maps with a DEM to calculate a 'mean regional' altitude of snow (Z) in a region surrounding a glacier. Then, we compare the interannual variation of Z with the observed winter/summer glacier MB for 55 Alpine glaciers over 1998-2008, our calibration period. We find strong linear relationships in winter (mean R 2 = 0.84) and small errors for the reconstructed winter MB (mean RMSE = 158 mm (w.e.) a −1). This is lower than errors generally assumed for the glaciological MB measurements (200-400 mm w.e. a ) and slightly larger errors in summer (RMSE = 561 mm w.e. a −1). These results indicate that our approach might be valuable for remotely determining the seasonal MB of glaciers over large regions.

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