Energetic Submesoscales Maintain Strong Mixed Layer Stratification during an Autumn Storm
Energetic Submesoscales Maintain Strong Mixed Layer Stratification during an Autumn Storm
复制标题
在秋季风暴期间,高能次中尺度保持强烈的混合层分层
DOI:
10.1175/jpo-d-17-0130.1
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发表时间:
2017
影响因子:
3.5
通讯作者:
Taylor, John R.
中科院分区:
文献类型:
--
作者:
Whitt, Daniel B.;Taylor, John R.
Atmospheric storms are an important driver of changes in upper-ocean stratification and small-scale (1–100 m) turbulence. Yet, the modifying effects of submesoscale (0.1–10 km) motions in the ocean mixed layer on stratification and small-scale turbulence during a storm are not well understood. Here, large-eddy simulations are used to study the coupled response of submesoscale and small-scale turbulence to the passage of an idealized autumn storm, with a wind stress representative of a storm observed in the North Atlantic above the Porcupine Abyssal Plain. Because of a relatively shallow mixed layer and a strong downfront wind, existing scaling theory predicts that submesoscales should be unable to restratify the mixed layer during the storm. In contrast, the simulations reveal a persistent and strong mean stratification in the mixed layer both during and after the storm. In addition, the mean dissipation rate remains elevated throughout the mixed layer during the storm, despite the strong mean stratification. These results are attributed to strong spatial variability in stratification and small-scale turbulence at the submesoscale and have important implications for sampling and modeling submesoscales and their effects on stratification and turbulence in the upper ocean.
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影响因子:
3.5
作者:
S. Bachman;John R. Taylor
通讯作者:
S. Bachman;John R. Taylor
影响因子:
3.7
作者:
H. Kaltenbach;T. Gerz;U. Schumann
通讯作者:
U. Schumann
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
S. Thomsen;T. Kanzow;F. Colas;V. Echevin;G. Krahmann;A. Engel
通讯作者:
A. Engel
影响因子:
5.2
作者:
Buckingham, Christian E.;Garabato, Alberto C. Naveira;Belcher, Stephen E.
通讯作者:
Belcher, Stephen E.