Science Service System

Summary of Proposal OCE0990

TitleComparison of TerraSAR-X and Multi-Frequency/Multi-Polarization Scatterometer Data (ComTeSS)
Investigator Gade, Martin - Universität Hamburg, Institut für Meereskunde
Team Member
Dr. Gade, Martin - Universität Hamburg, ZMAW, Institut für Meereskunde
SummaryComTeSS will focus on the comparison of high-resolution TerraSAR-X imagery and simultaneously acquired scatterometer data. A sister project, CompRasS, will comprise the same research, but will use Radarsat-2 imagery instead. The aim of this effort is to enhance knowledge about the influence of small-scale turbulent structures on the radar backscattering from the ocean surface and, thus, to provide a basis for an improved interpretation of TerraSAR-X data. The scientific work will be done in the frame of the German national project SOPRAN (Surface Ocean PRocesses in the ANthropocene), which addresses main aspects of ocean-atmosphere biogeochemical interaction. During the first SOPRAN phase (2007-2010), the Multi-Frequency/Multi-Polarization/ Multi-Purpose Microwave Scatterometer “Multi³Scat” of the University of Hamburg was improved and extended in such away that it can be operated autonomously on the research platform FINO2 in the western Baltic Sea. From early 2011 on, continuous measurements of the radar backscatter at L-, S-, C-, X- and Ku-band (1.0, 2.3, 5.3, 10.0, and 15.0 GHz, respectively) will be carried out at oblique incidence angles, and the backscatter time series will be compared with in-situ data. High-resolution TerraSAR-X and Radarsat-2 data will be an important complement in this respect. The dependence of the backscattered radar power on environmental conditions such as wind speed and direction, rain, and marine surface films, its modulation by long breaking ocean waves, the frequency of the wave breaking and its influence on the averaged radar signal will be studied in great detail during SOPRAN Phase II (2010-2013). In this frame, the Multi³Scat data shall becompared with high-resolution SAR data from TerraSAR-X and RADARSAT-2 (withinComTeSS and CompRasS, respectively).

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