1. Earth Research Institute University of California Santa Barbara California USA
2. Institute for Geophysics and Planetary Physics University of California Los Angeles California USA
3. Department of Atmospheric and Oceanic Sciences University of California Los Angeles California USA
4. Now at Institute of Coastal Research Helmholtz‐Zentrum Geesthacht Geesthacht Germany
5. Jet Propulsion Laboratory California Institute of Technology Pasadena California USA
6. Naval Research Laboratory Washington DC USA