ERS-1 SAR analysis of Arctic ice concentration during the melt season

Author

Askne, J. ; Ulander, L.M.H. ; Birkeland, D.

Author_Institution

Dept. of Radio & Space Sci., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

1993

fDate

18-21 Aug 1993

Firstpage

431

Abstract

Ice concentration can be derived with high accuracy (a few percent) from SAR images using the so called “global” ice concentration algorithm. The concentration error increases if surface properties change systematically, e.g. due to temperature or wind shifts. Properties of importance for the accuracy of the algorithm have been studied over an Arctic ice area in August 1991. The algorithm has also been compared with field observations. It is found that ice concentration can be obtained with a precision of a few percent over areas of the same size as the resolution cells of passive radiometry. Information from high resolution SAR images is expected to improve passive microwave radiometry

Keywords

oceanographic regions; oceanographic techniques; remote sensing by radar; sea ice; AD 1991 08; Arctic ice concentration; August 1991; ERS-1 SAR analysis; concentration error; melt season; passive microwave radiometry; surface properties; temperature shift; wind shift; Arctic; Electromagnetic heating; Global warming; Ice; Image resolution; Microwave radiometry; Oceans; Sea measurements; Space technology; Speckle;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322313

Filename

322313