Dataset for: Scaling laws for the upper ocean temperature dissipation rate

Using high-resolution optical turbulence measurements, scaling laws for Chi are investigated under forcing states where either the daytime heat flux or the wind stress forcing is dominant. We find that Chi remains constant over 1.5 times the significant wave height, while over a layer below, Chi decays based on the local surface forcing. When the heat flux is dominant, traditional scaling based on the Monin-Obukhov similarity theory remains valid; Chi ∝ z^−1. When the wind stress dominates, we observe the emergence of a new scaling, Chi ∝ z^−1∕2, which is explained by invoking the effect of small-scale coherent structures on vertical heat transport. This dataset reports wind forcing, dissipation with associated depth (pressure) during the Grand Lagrangian Experiment (GLAD) July 2012. These results have implications for improved modeling of the ocean’s heat and CO2 intake. This dataset was created to support the publication Bogucki, D., et al. 2015. Scaling laws for the upper ocean temperature dissipation rate, Geophysical Research Letters doi: 10.1002/2014GL062235.

本研究利用高分辨率光学湍流测量数据，在日间热通量或风应力强迫占主导的两种强迫状态下，对Chi的标度律展开了研究。研究发现，在显著波高1.5倍的高度范围内，Chi保持恒定；而在该高度以下的层中，Chi则根据局部表面强迫发生衰减。当热通量占主导时，基于莫宁-奥布霍夫相似理论（Monin-Obukhov similarity theory）的传统标度律依然有效，即Chi ∝ z^−1；当风应力占主导时，观测到一种新标度律的出现，即Chi ∝ z^−1/2，这可通过引入小尺度相干结构对垂直热传输的影响来解释。本数据集记录了2012年7月大型拉格朗日实验（Grand Lagrangian Experiment, GLAD）期间的风强迫、耗散及其相关深度（压力）数据。这些结果对改进海洋热量与CO₂吸收的建模具有重要意义。本数据集的创建旨在支持Bogucki等人2015年发表于《地球物理研究通讯》（Geophysical Research Letters）的论文《上层海洋温度耗散率的标度律》（Scaling laws for the upper ocean temperature dissipation rate），其DOI为10.1002/2014GL062235。