1. Laboratoire d'Etudes en Géophysique et Océanographie Spatiales (LEGOS) Université de Toulouse, CNES/CNRS/IRD/Université Toulouse III Paul Sabatier Toulouse France
2. Institute of Geosciences Kiel University Kiel Germany
3. School of Earth, Ocean and Environmental Science University of South Carolina Columbia South Carolina USA
4. Department of Environmental Radiometrics (LRA) Instituto de Pesquisas Energéticas e Nucleares (IPEN) Sao Paulo Brazil
5. HydroSciences Montpellier (HSM) IRD/CNRS/University Montpellier Montpellier France