Polarimetric C-band Microwave Scattering Properties of Snow Covered First-Year Sea Ice

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atmire.migration.oldid2939
dc.contributor.advisorYackel, John
dc.contributor.authorGill, Jagvijay P. S.
dc.date.accessioned2015-02-09T16:29:08Z
dc.date.available2015-06-23T07:00:44Z
dc.date.issued2015-02-09
dc.date.submitted2014en
dc.description.abstractIn this thesis, the physical, dielectric, and C-band polarimetric microwave properties of snow covered first-year sea ice (FYI) at different temperature conditions, largely encompassing late winter to melt onset period are investigated. First, a set of polarimetric parameters derived using different decomposition and synthesis techniques are analyzed at cold temperature conditions by relating them to pre-identified sea ice types. These parameters are further analyzed for their sea ice classification potential. This analytical scheme is extended to warmer temperature conditions and their stability for ice type signature response and classification potential is assessed. Second, the polarimetric SAR response from snow covered FYI at cold temperature conditions is analyzed to investigate the sensitivity of polarimetric backscatter to snow thickness. The backscatter sensitivities are examined as a function of change in surface air temperature through the changes manifested in snow geophysical properties. Lastly, in-situ measured geophysical and dielectric properties of thick and thin snow cover over smooth FYI and the corresponding C-band scatterometer measurements are analyzed at diurnal time scales during the transition from early melt to melt onset. A simple, multi-layer surface and volume scattering model of snow covered FYI is adopted. Using in-situ snow properties for model parameterization, corresponding C-band backscatter response is evaluated and scattering mechanisms are theorized. The findings indicate additional information is provided from fully polarimetric C-band backscatter data for sea ice classification and snow thickness retrieval purposes. Results also suggest that these parameters are best estimated at low radar incidence angles and during the late winter to early melt timeframe.en_US
dc.identifier.citationGill, J. P. (2015). Polarimetric C-band Microwave Scattering Properties of Snow Covered First-Year Sea Ice (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27376en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/27376
dc.identifier.urihttp://hdl.handle.net/11023/2096
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectGeography
dc.subjectGeophysics
dc.subjectRemote Sensing
dc.subject.classificationRemote Sensingen_US
dc.subject.classificationSynthetic Aperture Radaren_US
dc.subject.classificationMicrowaveen_US
dc.subject.classificationPolarimetryen_US
dc.subject.classificationSnowen_US
dc.subject.classificationSea Iceen_US
dc.subject.classificationClassificationen_US
dc.titlePolarimetric C-band Microwave Scattering Properties of Snow Covered First-Year Sea Ice
dc.typedoctoral thesis
thesis.degree.disciplineGeography
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
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