1. Alfred Wegener Institute; Helmholtz Centre for Polar and Marine Research; Am Alten Hafen 26 Bremerhaven D - 27568 Germany
2. Joint Antarctic Research Institute; Victoria University of Wellington and GNS Science; Wellington New Zealand
3. British Antarctic Survey; Natural Environment Research Council; Cambridge UK
4. Cryospheric Sciences Laboratory; NASA Goddard Space Flight Center; Greenbelt MD 20771 USA
5. Scott Polar Research Institute; SCAR Life Science; Lensfield Road Cambridge CB2 1ER UK
6. Institut de Ciències del Mar-CSIC; Passeig Marítim de la Barceloneta; 37-49 Barcelona 08003 Spain
7. Instituto Antártico Argentino; Balcarce 290 (C1064AAF) Ciudad Autónoma de Buenos Aires & CONICET Argentina
8. Argentina & Institut des sciences de la mer de Rimouski; 310 Allée des Ursulines Rimouski QC G5L 3A1 Canada
9. Department of Oceanography; University of Hawaii at Manoa; 1000 Pope Road Honolulu HI 96822 USA
10. Laboratoire d'Océanographie Spatiale; IFREMER; ZI de la Pointe du Diable Plouzané CS 10070 29280 France
11. Institute of Marine Research; Department of Life Sciences; University of Coimbra; Coimbra 3001-401 Portugal