Preprints
https://doi.org/10.5194/tcd-7-1927-2013
https://doi.org/10.5194/tcd-7-1927-2013
 
03 May 2013
03 May 2013
Status: this preprint was under review for the journal TC but the revision was not accepted.

Snow density retrieval using SAR data: algorithm validation and applications in part of North Western Himalaya

P. K. Thakur1, R. D. Garg2, S. P. Aggarwal1, P. K. Garg2, Snehmani3, and J. Shi4 P. K. Thakur et al.
  • 1Indian Institute of Remote Sensing (IIRS), Dehradun 4-kalidas road, 248001 Uttarakhand, India
  • 2Indian Institute of Technology (IIT), Roorkee, 247667 Uttarakhand, India
  • 3Snow and Avalanche Studies Establishment (SASE), Chandigarh Himparisar, Sector 37-A, 160017 Chandigarh, India
  • 4Institute for Computational Earth System Science, Ellison Hall 6808, University of California, Santa Barbara, CA 93106, USA

Abstract. The current study has been done using Polarimetric Synthetic Aperture Radar (SAR) data to estimate the dry snow density in Manali sub-basin of Beas River located in state of Himachal Pradesh, India. SAR data from Radarsat-2 (RS2), Environmental Satellite (ENVISAT), Advanced Synthetic Aperture Radar (ASAR) and Advanced Land Observing Satellite (ALOS)-Phased Array type L-band Synthetic Aperture Radar (PALSAR) have been used. The SAR based inversion models were implemented separately for fully polarimetric RS2, PALSAR and dual polarimetric ASAR Alternate polarization System (APS) datasets in Mathematica and MATLAB software and have been used for finding out dry snow dielectric constant and snow density. Masks for forest, built area, layover and shadow were considered in estimating snow parameters. Overall accuracy in terms of R2 value and Root Mean Square Error (RMSE) was calculated as 0.85 and 0.03 g cm−3 for snow density based on the ground truth data. The retrieved snow density is highly useful for snow avalanche and snowmelt runoff modeling related studies of this region.

P. K. Thakur et al.

 
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Status: closed
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

P. K. Thakur et al.

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