Abstract
An important class of oceanographic models is the mixed layer models that, simply stated, provided predictions of mixed layer depth and temperature. These predictions take into account the surface winds that drive the mixing and the solar radiation that heats the mixed layer. As interest has increased in using such models as a step in the process for making acoustic forecasts or nowcasts, a recurring question has been that of what information is needed for accurate acoustic predictions. For instance, how precisely do mixed layer depths need to be calculated? Is mixed layer temperature important? These and other questions are addressed through a parameter study using synthetic sound‐speed profiles as input to an acoustic model. The implications are demonstrated in a somewhat more concrete form in a two‐step process: The SSP is predicted using particular mixed layer models (Niiler, Mellor‐Yamada, Garwood, etc.) and passed to an acoustic model to provide transmission loss calculations. The results are also compared to predictions based on both measured and historical SSP measurements.
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