Title :
Analysis of C-band backscatter measurements of thin Arctic sea ice
Author :
Pettersson, M. ; Grandell, J. ; Carlström, A. ; Pallonen, J. ; Ulander, L.M.H. ; Hallikainen, M.
Author_Institution :
Dept. of Radio & Space Sci., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Presents backscattering model predictions based on in situ data in comparison to helicopter borne C-band scatterometer measurements performed during the ARCTIC-91 expedition. The test sites were over thin ice areas covered with wet saline snow and slush. The scatterometer measurements were made at incidence angles between 12 and 60 degrees for all linear polarization combinations. Application of the backscattering models showed that surface scattering dominates in all studied cases. A comparison between scatterometer and ERS-1 SAR measurements over a rough and saline snow area indicate that the backscatter may change by 3 dB in 5 hours, probably due to changes in surface temperature by wind cooling
Keywords :
backscatter; electromagnetic wave scattering; oceanographic regions; oceanographic techniques; radar applications; radar cross-sections; radar polarimetry; remote sensing; remote sensing by radar; sea ice; AD 1991; ARCTIC-91; Arctic Ocean; C-band microwave SHF; SAR; backscatter; backscattering model; ocean; polarization; radar polarimetry; radar scattering strength; radiowave reflection; remote sensing measurement technique; rough surface; saline snow; sea ice; sea surface; temperature change; thin ice; wet snow slush; wind cooling; Arctic; Backscatter; Ocean temperature; Radar measurements; Rough surfaces; Sea ice; Sea measurements; Sea surface; Snow; Surface roughness;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Conference_Location :
Firenze
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.520281
