Eddy‐Induced Acceleration of Argo Floats
Eddy‐Induced Acceleration of Argo Floats
复制标题
Argo 浮标的涡流诱发加速度
DOI:
10.1029/2019jc016042
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Du, Yan
中科院分区:
文献类型:
--
作者:
Wang, Tianyu;Gille, Sarah T.;Mazloff, Matthew R.;Zilberman, Nathalie V.;Du, Yan
Float trajectories are simulated using Lagrangian particle tracking software and eddy‐permitting ocean model output from the Estimating the Circulation and Climate of the Ocean, Phase II (ECCO2) project. We find that Argo‐like particles near strong mean flows tend to accelerate while at their parking depth. This effect is pronounced in western boundary current regions and in the Antarctic Circumpolar Current system. The acceleration is associated with eddy‐mean flow interactions: Eddies converge particles toward regions with stronger mean currents. Particles do not accelerate when they are advected by the eddy or mean flow alone. During a 9‐day parking period, speed increases induced by the eddy‐mean flow interactions can be as large as 2 cm s−1, representing roughly 10% of the mean velocity. If unaccounted for, this acceleration could bias velocities inferred from observed Argo float trajectories.
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