Large-scale comparison between buoy and SSM/I drift and deformation in the eurasian basin during winter 1992-1993
| Author(s) | Geiger, Cathleen A. | |
| Author(s) | Zhao, Y. H. | |
| Author(s) | Liu, A. K. | |
| Author(s) | Hakkinen, S. | |
| Ordered Author | Geiger, Cathleen A., Zhao, Y. H., Liu, A. K., Hakkinen, S. | |
| UD Author | Geiger, Cathleen A. | |
| Date Accessioned | 2015-04-25T09:20:52Z | |
| Date Available | 2015-04-25T09:20:52Z | |
| Copyright Date | Copyright © 2000 by the American Geophysical Union | |
| Publication Date | 2000 | |
| Description | Final published version | en_US |
| Abstract | A method for comparing sea ice velocity, divergence, and shear at the large-scale between buoys and Special Sensor Micro wave Imager (SSM/I) is presented. For initial testing, the method is applied in the Eurasian Basin because of its relatively simple circulation dominated by the wind. Using eight Argos buoys, 11 strain rate arrays 100-600 km in size are constructed. Daily 100 km resolution sea ice motion derived from SSM/I 85 GHz brightness temperatures is sampled 100-1000 km from the center of the buoy arrays. Over this range of possible scales, a minimum RMS difference (RMSD) for deformation is used to identify an optimal inclusion radius of 600 km corresponding to a length scale of 1000 km. This length scale is typical of local storms confirming a strong connection between wind and observed sea ice motion. On the basis of all II arrays, an average RMSD of 2.48 +/- 0.05 cm s(-1) for velocity vector and 8.8 +/- 0.9 x 10(-8) s(-1) using all four deformation components (partial derivative u(i)/partial derivative x(j)) is found at the optimal inclusion radius corresponding to average correlation coefficients of 0.896 +/- 0.002 and 0.729 +/- 0.030, respectively. RMSD are found to scale with the temporal and spatial uncertainties of the SSM/I suggesting that even better results can be achieved with higher resolution instruments. | en_US |
| Department | University of Delaware. Department of Geography. | |
| Citation | Geiger, C. A., Zhao, Y. H., Liu, A. K., & Hakkinen, S. (2000). Large-scale comparison between buoy and SSM/I drift and deformation in the eurasian basin during winter 1992-1993. Journal of Geophysical Research-Oceans, 105(C2), 3357-3368. | en_US |
| DOI | 10.1029/1999JC900285 | |
| ISSN | 0148-0227 | |
| URL | http://udspace.udel.edu/handle/19716/16740 | |
| dc.language | English (United States) | |
| Publisher | American Geophysical Union | en_US |
| dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | |
| dc.source | Journal of Geophysical Research-Oceans | |
| dc.source.uri | http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292169-9291/ | |
| Title | Large-scale comparison between buoy and SSM/I drift and deformation in the eurasian basin during winter 1992-1993 | en_US |
| Type | Article | en_US |