Comparison of physical connectivity particle tracking models in the Flemish Cap region

ABSTRACT Lagrangian particle tracking models are considered an important tool for assessing connectivity in the deep sea. A number of user interfaces are available to assess oceanic structural connectivity. These use currents produced by state-of-the-art ocean models, and can be used to run forward/hindcast simulations, habitat connectivity calculations, comparison of physical circulation models, etc. We compared simulation outputs from two particle tracking packages, WebDrogue v.0.7 and the Parcels framework version 2.1, the former having been previously published in a study investigating con... Mehr ...

Verfasser: Wang, Shuangqiang
Wang, Zeilang
Lirette, Camille
Davies, Andrew J
Kenchington, Ellen L
Dokumenttyp: report
Erscheinungsdatum: 2019
Verlag/Hrsg.: Zenodo
Schlagwörter: Connectivity / Particle tracking model / Flemish Cap / European Union / Horizon 2020 / Deep-sea Sponge Grounds Ecosystems of the North Atlantic: An integrated approach towards their preservation and sustainable exploitation / SponGES / Grant Agreement No 679849
Sprache: unknown
Permalink: https://search.fid-benelux.de/Record/base-29066995
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://doi.org/10.5281/zenodo.3663643

ABSTRACT Lagrangian particle tracking models are considered an important tool for assessing connectivity in the deep sea. A number of user interfaces are available to assess oceanic structural connectivity. These use currents produced by state-of-the-art ocean models, and can be used to run forward/hindcast simulations, habitat connectivity calculations, comparison of physical circulation models, etc. We compared simulation outputs from two particle tracking packages, WebDrogue v.0.7 and the Parcels framework version 2.1, the former having been previously published in a study investigating connectivity patterns among closed areas in the NAFO Regulatory Area. We further tested a combination of parameters used by Parcels (number of particles, particle spacing, time step, random walk) to determine optimal values for future applications. Parcels identified more connectivity than WebDrogue with differences attributed to higher current velocities in the underlying ocean model, although drift pathways were generally similar in both. RÉSUMÉ On considère que les modèles Lagrangien de suivi de particules sont un outil important pour évaluer la connectivité en haute mer. Il existe un certain nombre d’interfaces utilisateur permettant d’évaluer la connectivité structurelle des océans. Ces interfaces, qui utilisent les courants issus de modèles océaniques de pointe, peuvent entre autres servir à effectuer des simulations prospectives ou rétrospectives, à faire des calculs liés à la connectivité de l’habitat ainsi qu’à comparer des modèles de circulation physique. Dans le cadre de la présente étude, nous avons comparé les résultats de simulation issus de deux interfaces de suivi de particules, soit la version 0.7 de WebDrogue et la version 2.1 de Parcels. Les résultats de simulation issus de WebDrogue ont déjà été publiés dans le cadre d’une étude sur les tendances de connectivité au sein de zones fermées situées au sein de la zone réglementée par l’OPANO. Nous avons donc testé une combinaison de paramètres utilisés par ...