Distribution of Antarctic Sea Ice from Satellite Altimetry in the Weddell Sea: Preliminary Results

• Journal title : Ocean and Polar Research
• Volume 24, Issue 3,  2002, pp.255-261
• Publisher : Korea Institute of Ocean Science & Technology
• DOI : 10.4217/OPR.2002.24.3.255
Title & Authors
Distribution of Antarctic Sea Ice from Satellite Altimetry in the Weddell Sea: Preliminary Results
Kim, Jeong-Woo; Hong, Sung-Min; Hwang, Jong-Sun; Yoon, Ho-Il; Lee, Bang-Yong; Kim, Yea-Dong;

Abstract
We investigated the distribution of sea ice using Topex/Poseidon (T/P) and ERS-1 .ada. altimeter data in the northwest Weddell Sea, Antarctica, between the area $\small{45-75^{\circ}W\;and\;55-66^{\circ}S}$. Using the Geo_Bad_1 flag of the Merged GDR of the T/P, we classified the surface into ocean, land, and sea. Total 257 cycles of altimeter measurements between Oct. 1992 and Sep. 1999 (for nearly 2570 days) were used to analyze the distribution of the Antarctic sea ice. We then calculated the surface area of ice coverage using SUTM20 map projection to monitor the periodic variations. Each year, the maximum and minimum coverage of the sea ice were found in late August and February in the study area, respectively. We also studied the sea ice distribution using ERS-1 altimeter data between $\small{45-75^{\circ}W\;and\;55-81.5^{\circ}S}$ to compare with the T/P Using the Valid/Invalid flag of the Ocean Product, we analyzed the sea ice distribution between March and August of 1995, which showed very good coherence with the T/P measurements. Our preliminary results showed that the altimeter measurements can be effectively used to monitor the distribution of the sea ice in the polar region. However, the size of radar footprint, typically 2-6km depending on the roughness of the sea surface, may be too big to monitor the sharp boundary between ice and water/land. If more other altimeter mission data with dense coverage such as Geosat GM are analyzed together, this limitation can be significantly improved. If we also combine other microwave remote sensing data such as radiometer, and SSM/I, the result will be significantly enhanced.
Keywords
Language
English
Cited by
1.
‘Live’ (stained) deep-sea benthic foraminiferans in the western Weddell Sea: trends in abundance, diversity and taxonomic composition along a depth transect, Deep Sea Research Part II: Topical Studies in Oceanography, 2004, 51, 14-16, 1571
References
1.
Benada, R. 1997. Merged GDR(Topex/Poseidon) Generation B User’s Handbook. Physical Oceanography Distributed Active Archive Center, Jet Propulsion Lab., 124 p.

2.
Carsey, F.D., R.G. Barry, and W.F. Weeks. 1992. Chapter 1. Introduction. p.1-7. In: Microwave Remote Sensing of Sea Ice, ed. by F.D. Carsey.

3.
CLS. 1993. Quality Assessment of CERSAT Altimetry OPR Products, OCNT-93.005, CDs.

4.
French Processing and Archiving Facility. 1995. Altimeter and Microwave Radiometer ERS Product User Manual, Ref. C2-MUT-A-01-IF, Vol. 1.2.

5.
Fu, L.L. and A. Cazenave. 2001. Satellite Altimetry and Earth Sciences - A Handbook of Techniques and Applications. International Geophysics Series, Vol. 69, Academic Press, 463 p.

6.
Hong, C.-K., S. Hong, J.-S. Hwang, D.C. Lee, and J.W. Kim. 2000. Distribution of altimetry-implied sea ice in the Weddell Sea, Antarctica: Preliminary Results, Proceeding of International Symposium on Remote Sensing, Korea Remote Sensing Society, p. 122-126.

7.
Jeffries, M.O. 1998. Antarctic Sea Ice - Physical Processes, Interactions and Variability. American Geophysical Union, 407 p.

8.
Kim, J.W., S. Hong, D.C. Lee, and C.-K. Hong. 2001. Satellite altimetry-implied sea ice in the Weddell Sea, Antarctica, Proceedings of 2001 IEEE International Geoscience and Remote Sensing Society.

9.
Massom, R. 1991. Satellite Remote Sensing of Polar Regions. Lewis Publications, Boca Raton, Florida, 307 p.