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  Intercomparisons of Antarctic sea ice types from visual ship, RADARSAT-1 SAR, Envisat ASAR, QuikSCAT, and AMSR-E satellite observations in the Bellingshausen Sea

Ozsoy-Cicek, B., Kern, S., Ackley, S. F., Xie, H., & Tekeli, A. E. (2011). Intercomparisons of Antarctic sea ice types from visual ship, RADARSAT-1 SAR, Envisat ASAR, QuikSCAT, and AMSR-E satellite observations in the Bellingshausen Sea. Deep-Sea Research Part II-Topical Studies in Oceanography, 58(9-10), 1092-1111. doi:10.1016/j.dsr2.2010.10.031.

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Ozsoy-Cicek, Burcu, Autor
Kern, Stefan1, Autor           
Ackley, Stephen F., Autor
Xie, Hongjie, Autor
Tekeli, Ahmet E., Autor
Affiliations:
1I 1 - Integrated Climate Data Center, Integrated Activities, The CliSAP Cluster of Excellence, External Organizations, ou_1863492              

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 Zusammenfassung: Antarctic Sea Ice Processes and Climate (ASPeCt) visual ship-based observations were conducted in the Bellingshausen Sea during the Sea Ice Mass Balance in the Antarctic (SIMBA) cruise in austral spring 2007. A total of 59 ASPeCt observations are compared to coincident satellite active and passive microwave data. Envisat and RADARSAT-1 C-Band HH-polarization radar backscatter values (called NRCS henceforth) are derived on km-scales for six individual ice types and ice type mixtures. C-Band HH-polarized and Ku-Band VV-polarized NRCS are extracted on several 10 km-scale areas from coincident Envisat, RADARSAT-1, and QuikSCAT radar images for areas primarily covered with multiyear, deformed first-year, and undeformed young ice, as well as ice of the marginal ice zone (MIZ). The C-Band NRCS permits distinction between first-year, MIZ, and undeformed young ice. However, NRCS of the multiyear ice zone overlaps with that of the other ice zones and types. Ku-Band NRCS obtained for the same ice types permits discrimination of the first-year ice zone only. Obtained NRCS agree with those of previous studies and suggest a high degree of deformation and considerable potential for flooding for the first-year ice case. In comparison to large scale NRCS, AMSR-E snow depth values form two clearly separated clusters, one for 0.24–0.35 m depth (first-year ice zone) and one for 0.36–0.54 m depth (multiyear ice zone). However, a comparison to ASPeCt observations suggests a remarkable underestimation of the snow depth by AMSR-E in the multiyear–first-year-ice transition zone and for first-year cake ice. Nevertheless, a fusion of the coarse AMSR-E snow depth ranges for interior pack ice regions with radar imagery at large scale, appears promising for mapping the major zones (MIZ and Pack Ice) and ice types (first-year and multiyear) of Antarctic sea ice on a circumpolar basis.

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Sprache(n): eng - English
 Datum: 2011-05
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.dsr2.2010.10.031
 Art des Abschluß: -

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Titel: Deep-Sea Research Part II-Topical Studies in Oceanography
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Oxford [England] : Pergamon
Seiten: - Band / Heft: 58 (9-10) Artikelnummer: - Start- / Endseite: 1092 - 1111 Identifikator: ISSN: 0967-0645
CoNE: https://pure.mpg.de/cone/journals/resource/954925582179