Computing resources were provided by the German Climate Computing Center (DKRZ). Irina Fast was financially supported by the CliSAP Cluster of Excellence of the University Hamburg. The STORM/NCEP simulation is part of the German STORM consortium project. It is acknowledged by various institutions inside Germany in general and by Institute of Coastal Research of the Helmholtz Zentrum Geestacht and Alfred Wegener Institute for Polar and Marine Research through their financial support in particular. Thanks also to Kenji Shimizu for reviewing the manuscript.
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To reduce the output size, we stored our data in single precision that can distinguish 6 digits after comma. This way of storage is generally sufficient for most of the variables, except for the square of density, which is needed to calculate the eddy available potential energy. Because of extremely small variations in density, a large portion of the digits are used to store information that remains essentially unchanged, leaving very few digits to store the information about density variations.