On the estimation of temporal changes of snow water equivalent by spaceborne SAR interferometry : a new application for the Sentinel-1 mission

Show full item record



Permalink

http://hdl.handle.net/10138/268057

Citation

Conde , V , Nico , G , Mateus , P , Catalão , J , Kontu , A & Gritsevich , M 2019 , ' On the estimation of temporal changes of snow water equivalent by spaceborne SAR interferometry : a new application for the Sentinel-1 mission ' , Journal of Hydrology and Hydromechanics , vol. 67 , no. 1 , pp. 93-100 . https://doi.org/10.2478/johh-2018-0003

Title: On the estimation of temporal changes of snow water equivalent by spaceborne SAR interferometry : a new application for the Sentinel-1 mission
Author: Conde, Vasco; Nico, Giovanni; Mateus, Pedro; Catalão, João; Kontu, Anna; Gritsevich, Maria
Contributor organization: Department of Physics
Date: 2019-03
Language: eng
Number of pages: 8
Belongs to series: Journal of Hydrology and Hydromechanics
ISSN: 0042-790X
DOI: https://doi.org/10.2478/johh-2018-0003
URI: http://hdl.handle.net/10138/268057
Abstract: In this work we present a methodology for the mapping of Snow Water Equivalent (SWE) temporal variations based on the Synthetic Aperture Radar (SAR) Interferometry technique and Sentinel-1 data. The shift in the interferometric phase caused by the refraction of the microwave signal penetrating the snow layer is isolated and exploited to generate maps of temporal variation of SWE from coherent SAR interferograms. The main advantage of the proposed methodology with respect to those based on the inversion of microwave SAR backscattering models is its simplicity and the reduced number of required in-situ SWE measurements. The maps, updated up to every 6 days, can attain a spatial resolution up to 20 m with sub-centimetre ASWE measurement accuracy in any weather and sun illumination condition. We present results obtained using the proposed methodology over a study area in Finland. These results are compared with in-situ measurements of ASWE, showing a reasonable match with a mean accuracy of about 6 mm.
Subject: 1171 Geosciences
114 Physical sciences
Snow Water Equivalent (SWE)
Synthetic Aperture Radar (SAR)
SAR interferometry (InSAR)
Sentinel-1
RADIOMETER DATA
RETRIEVAL
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: publishedVersion


Files in this item

Total number of downloads: Loading...

Files Size Format View
_0042790X_Journ ... the_Sentinel_1_Mission.pdf 4.518Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record