Tekeli, Ahmet E; Kern, Stefan; Ackley, Stephen F; Ozsoy-Cicek, Burcu; Xie, Hongjie (2011): Comparisons of observed ice properties and Envisat Advanced Synthetic Aperture Radar (ASAR) data during Nathanial B. Palmer cruise NBP09-01 and Oden cruise OSO08/09 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.839043, Supplement to: Tekeli, AE et al. (2011): Summer Antarctic sea ice as seen by ASAR and AMSR-E and observed during two IPY field cruises: a case study. Annals of Glaciology, 52(57), 327-336, https://doi.org/10.3189/172756411795931697
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Envisat Advanced Synthetic Aperture Radar (ASAR) Wide Swath Mode (WSM) images are used to derive C-band HH-polarization normalized radar cross sections (NRCS). These are compared with ice-core analysis and visual ship-based observations of snow and ice properties observed according to the Antarctic Sea Ice Processes and Climate (ASPeCt) protocol during two International Polar Year summer cruises (Oden 2008 and Palmer 2009) in West Antarctica. Thick first-year (TFY) and multi-year (MY) ice were the dominant ice types. The NRCS value ranges between -16.3 ± 1.1 and -7.6 ± 1.0 dB for TFY ice, and is -12.6 ± 1.3 dB for MY ice; for TFY ice, NRCS values increase from ~-15 dB to -9 dB from December/January to mid-February. In situ and ASPeCt observations are not, however, detailed enough to interpret the observed NRCS change over time. Co-located Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) vertically polarized 37 GHz brightness temperatures (TB37V), 7 day and 1 day averages as well as the TB37V difference between ascending and descending AMSR-E overpasses suggest the low NRCS values (-15 dB) are associated with snowmelt being still in progress, while the change towards higher NRCS values (-9dB) is caused by commencement of melt-refreeze cycles after about mid-January.
Project(s):
Coverage:
Median Latitude: -73.625796 * Median Longitude: -127.008638 * South-bound Latitude: -75.500000 * West-bound Longitude: -151.300000 * North-bound Latitude: -71.613471 * East-bound Longitude: -102.981370
Date/Time Start: 2008-12-25T00:00:00 * Date/Time End: 2009-02-09T00:00:00
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
Download Data
Datasets listed in this publication series
- Tekeli, AE; Kern, S; Ackley, SF et al. (2011): (Table 2) ASAR radar data in comparison with observations of ice-core ice and snow properties made during Nathanial B. Palmer cruise NBP09-01 and Oden cruise OSO08/09. https://doi.org/10.1594/PANGAEA.839040
- Tekeli, AE; Kern, S; Ackley, SF et al. (2011): (Table 1) ASAR radar data in comparison with observations of total and dominant sea ice-type, ice concentration and thickness made during Nathanial B. Palmer cruise NBP09-01 and Oden cruise OSO08/09. https://doi.org/10.1594/PANGAEA.839039
- Tekeli, AE (2011): (Table 3) Daily mean and standard deviation of brightness temperatures, daily mean ice concentrations and daily brightness temperature amplitude obtained from AMSR-E. https://doi.org/10.1594/PANGAEA.839042