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Title: Lagrangian ocean analysis: Fundamentals and practices

Journal Article · · Ocean Modelling

Lagrangian analysis is a powerful way to analyse the output of ocean circulation models and other ocean velocity data such as from altimetry. In the Lagrangian approach, large sets of virtual particles are integrated within the three-dimensional, time-evolving velocity fields. A variety of tools and methods for this purpose have emerged, over several decades. Here, we review the state of the art in the field of Lagrangian analysis of ocean velocity data, starting from a fundamental kinematic framework and with a focus on large-scale open ocean applications. Beyond the use of explicit velocity fields, we consider the influence of unresolved physics and dynamics on particle trajectories. We comprehensively list and discuss the tools currently available for tracking virtual particles. We then showcase some of the innovative applications of trajectory data, and conclude with some open questions and an outlook. Our overall goal of this review paper is to reconcile some of the different techniques and methods in Lagrangian ocean analysis, while recognising the rich diversity of codes that have and continue to emerge, and the challenges of the coming age of petascale computing.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science (SC). Biological and Environmental Research (BER) (SC-23)
Grant/Contract Number:
SC0012457; AC52-06NA25396
OSTI ID:
1437781
Alternate ID(s):
OSTI ID: 1411342
Report Number(s):
LA-UR-16-24217; S1463500317301853; PII: S1463500317301853
Journal Information:
Ocean Modelling, Journal Name: Ocean Modelling Vol. 121 Journal Issue: C; ISSN 1463-5003
Publisher:
ElsevierCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 219 works
Citation information provided by
Web of Science

References (1)

Argo float data and metadata from Global Data Assembly Centre (Argo GDAC) dataset January 2018

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The Fate of Marine Litter in Semi-Enclosed Seas: A Case Study of the Black Sea journal October 2019
Lagrangian Timescales of Southern Ocean Upwelling in a Hierarchy of Model Resolutions journal January 2018
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Physical Drivers of Phytoplankton Bloom Initiation in the Southern Ocean's Scotia Sea journal August 2019
The Surface Pathways of the South Atlantic: Revisiting the Cold and Warm Water Routes Using Observational Data journal October 2019
Vertical Structure and Seasonal Variability of the Inflow to the Lofoten Basin Inferred From High‐Resolution Lagrangian Simulations journal December 2019
Influence of Barotropic Tidal Currents on Transport and Accumulation of Floating Microplastics in the Global Open Ocean journal January 2020
Transport Bias by Ocean Currents in Sedimentary Microplankton Assemblages: Implications for Paleoceanographic Reconstructions journal July 2019
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Circulation in the Gulf of Khambhat—A Lagrangian Perspective journal January 2020
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