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Monitoring freeze/thaw cycles using ENVISAT ASAR Global Mode

Park, Sang-Eun and Bartsch, Annett and Sabel, Daniel and Wagner, Wolfgang and Naeimi, Vahid and Yamaguchi, Yoshio (2011) Monitoring freeze/thaw cycles using ENVISAT ASAR Global Mode. Remote Sensing of Environment, 115 (12), pp. 3457-3467. Elsevier. DOI: 10.1016/j.rse.2011.08.009. ISSN 00344257.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0034425711002914


Due to the high temporal sampling rate of ASAR Global Monitoring (GM) mode, it has a high application potential for analyzing the land surface freeze/thaw process in high latitudes. This study aims to develop effective methods of extracting freeze/thaw transition dates of permafrost areas from ASAR GM data sets. In order to use ASAR GM time-series for analyzing freeze/thaw states, a least square fitting of piecewise step function is introduced. The thawing date can be determined by minimizing the sum of squared residuals between measured backscattering time-series and a pre-defined step function. An experimental result for a Siberian permafrost region illustrates that it can be a promising approach in monitoring permafrostecosystems.

Document Type:Article
Title:Monitoring freeze/thaw cycles using ENVISAT ASAR Global Mode
AuthorsInstitution or Email of Authors
Park, Sang-Euns.park@wave.ie.niigata-u.ac.jp
Bartsch, Annettab@ipf.tuwien.ac.at
Sabel, Danields@ipf.tuwien.ac.at
Wagner, Wolfgangww@ipf.tuwien.ac.at
Naeimi, Vahidvahid.naeimi@dlr.de
Yamaguchi, YoshioNiigata University, Japan
Journal or Publication Title:Remote Sensing of Environment
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 3457-3467
Keywords:Synthetic Aperture Radar ENVISAT ASAR Siberia Freeze/thaw
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Fernerkundung der Landoberfläche
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Dr.techn. Vahid Naeimi
Deposited On:06 Nov 2012 11:31
Last Modified:22 Apr 2013 08:59

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