主要內(nèi)容：

　　The wind wave tank facility of the University of Hamburg is 26 m long and 1 m wide. It is filled with freshwater and has a mean water depth of 0.5 m. The wind tunnel height is 1 m, and the effective (maximum) fetch is 19 m. During the past decades, basic research has been carried out here, on small-scale processes that influence fluxes of energy, momentum, gas and heat across the air-water interface, and that may affect the radar backscattering from the sea surface. Among those are the damping of small-scale waves by monomolecular surface films, the generation of turbulent surface and sub-surface features by heavy rain and the effect of different wind speeds on the small-scale wave and current fields below and above the water surface. In this lecture examples of the various measurement campaigns are given, and their link to radar remote sensing data is demonstrated, primarily to those of imaging radars such as synthetic aperture radar (SAR).

　　專家簡介：

　　Dr. Martin Gade received his Diploma degree in Physics in 1992 and the Ph.D. degree in Geosciences in 1996, both from the University of Hamburg, Hamburg, Germany. He has been working as a Research Scientist at the Institute of Oceanography (IfM), University of Hamburg, Hamburg, Germany. In 2000, he was visiting scientist at the Dept. of Physical Geography of the University of Stockholm, Sweden. In 2002, he was with the Applied Physics Laboratory of the University of Washington in Seattle, WA, USA.

　　His research interests include air-sea interactions, marine surface films and coastal processes, and their remote sensing using active microwave sensors such as scatterometers and synthetic aperture radar (SAR). Apart from his analyses of regional and global satellite data he has been actively involved in laboratory and field remote sensing experiments deploying optical, infrared, and microwave sensors. He has published more than 40 papers in peer-reviewed journals and books and has co-edited four books focusing on Marine Surface Films and on Remote Sensing of the European, African and Asian Seas.