1. Division of Hydrologic Sciences; Desert Research Institute; Reno Nevada USA
2. Department of Atmospheric Sciences, Rosenstiel School of Marine and Atmospheric Science; University of Miami; Miami Florida USA
3. Woods Hole Oceanographic Institution; Woods Hole Massachusetts USA
4. Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung; Bremerhaven Germany
5. British Antarctic Survey; Cambridge UK