Georg C. Heygster
Institute of Environmental Physics, University of Bremen
P.O. Box 330440, D-28334 Bremen
Tel.+49 421 218-3910, Fax -4555,
Georg C. Heygster, born in 1951, Diplomphysiker (University of Gottingen,1976),
Ph.D. (University of Gottingen, 1979).
Since 1988 he is with the Institute of Environmental Physics, University of Bremen where he is head of the group 'Physical Analysis of Satellite Images'. His research interests have been in the fields of remote sensing of cryospheric surface and atmosphere parameters with passive microwave and other sensors. Development of a combined emissivity model of (ice covered) sea surface and atmosphere ( ESA, 1994-96). Activities in radiative transfer calculations, signal processing, and image restoration. Research projects obtained from the European Comission (1994-1996, 1998-2000), the German Research Community (many since 1989) and the German Ministery of Education and Research (many since 1995).
Hunewinkel, T., Markus, T., Heygster, G., 1998: Improved determination of the sea ice edge with SSM/I data for small-scale analyses, IEEE Transactions on Geoscience and Remote Sensing, 36,5, 1795-1808.
Sethmann, R., Burns, B.A., Heygster, G., 1994: Spatial resolution improvement of SSM/I data with image restoration techniques, IEEE Transactions on Geoscience and Remote Sensing, 32,6 (November), 1144--1151.
Thomas, C.H., Heygster, G.C., 1996: Individual weather correction for Antarctic sea ice concentrations from SSM/I -- in: Proc. IGARSS'96, 1788--1790.
K.-P.Johnsen, G. Heygster, A. Darovskikh, 1998: Microwave radiometer measurements of sea ice and freshwater ice in experiment and theory, Submitted to IEEE Transactions on Antennas and Propagation.
R.Fuhrhop, T.C.Grenfell, G.Heygster, K.-P.Johnsen, P.Schluessel, M. Schrader, C.Simmer, 1998 -- A combined radiative transfer model for sea ice, open ocean, and atmosphere. Radio Science, Vol.3, No.2, 303--316.
Role in the SMOS mission:
Exploiting the high spatial resolution of the 1.4 GHz channel in combination with the low influence of the atmosphere we will analyze the possibility to improve the detection of the ice concentration and ice drift. For comparisons and synergy the AMSR and the SSM/I will be used.
With microwave emissivity models we will analyse the influence of the salinity in sea ice to the radiometric signal. According to preliminary studies it should be possible to determine the ice thickness for areas of low salinity. Development of a retrieval scheme.