This work was made possible with the funding by the Canadian Foundation for Atmospheric and Climate Sciences (CFCAS). Data collection was part of the FAIRS project, supported by the Office of Naval Research. We are indebted to the crew of R/P FLIP and the technical staff of the acoustical oceanography group at the Institute of Ocean Sciences (Sidney, BC). A. Jessup (APL-UW) and J. Edson (WHOI) provided supplementary data. MLB also gratefully acknowledges support during this investigation from the U.S. Office of Naval Research under the CBLAST Departmental Research Initiative. Part of the analysis was done during one author’s (JG) visit to the Institute for Baltic Sea Research Warnemünde, and the hospitality and many insightful discussions with H. Burchard and L. Umlauf are greatly acknowledged. The critical reviews by two anonymous reviewers helped to improve the manuscript.
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