Quantifying C-band scattering mechanisms from snow-covered first-year sea ice at the winter-spring transition

Alexander S. Komarov, Jack C. Landy, Sergey A. Komarov, David G. Barber

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

We present model and measurement results for time-series C-band normalized radar cross-sections (NRCS) over first-year snow-covered sea ice during a winter-spring transition period. Experimental scatterometer and physical data were collected near Cambridge Bay, Nunavut, Canada between May 20 and May 28, 2014 covering a severe storm event on May 25. We observed good agreement between model and experimental HH and VV NRCS. Before the storm, the large-scale surface scattering and volume scattering components dominated. After the storm, the large-scale scattering contribution increased, while the volume scattering contribution considerably dropped. Surface scattering from the small-scale component of the air-snow interface became significant at high incidence angles. We attribute these effects to the increase in surface roughness and snow moisture content during the post-storm period. Our results provide a physical basis for interpretation of time-series SAR images over sea ice at the winter-spring transition.

Original languageEnglish
Title of host publication2017 IEEE International Geoscience and Remote Sensing Symposium
Subtitle of host publicationInternational Cooperation for Global Awareness, IGARSS 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages4262-4265
Number of pages4
Volume2017-July
ISBN (Electronic)9781509049516
DOIs
Publication statusPublished - 1 Dec 2017
Event37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017 - Fort Worth, United States
Duration: 23 Jul 201728 Jul 2017

Conference

Conference37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
CountryUnited States
CityFort Worth
Period23/07/1728/07/17

Keywords

  • Electromagnetic wave scattering
  • Layered media
  • Snow-covered sea ice
  • Surface and volume scattering

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    Komarov, A. S., Landy, J. C., Komarov, S. A., & Barber, D. G. (2017). Quantifying C-band scattering mechanisms from snow-covered first-year sea ice at the winter-spring transition. In 2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings (Vol. 2017-July, pp. 4262-4265). [8127943] Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/IGARSS.2017.8127943