1. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research; Bremerhaven Germany
2. Norwegian Meteorological Institute; Oslo Norway
3. Laboratory of Oceanography from Space; Ifremer Plouzane France
4. National Institute of Polar Research; Tachikawa Japan
5. University of Colorado; Boulder Colorado USA
6. Ocean Atmosphere Systems; Hamburg Germany
7. Jacobs University; Bremen Germany