1. MIT‐WHOI Joint Program in Physical Oceanography, Woods Hole Oceanographic InstitutionWoods Hole Massachusetts USA
2. Now at Department of Marine, Earth and Atmospheric SciencesNorth Carolina State University Raleigh North Carolina USA
3. Department of Physical OceanographyWoods Hole Oceanographic InstitutionWoods Hole Massachusetts USA
4. Lamont‐Doherty Earth Observatory of Columbia UniversityPalisades New York USA