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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/gmd-2018-339
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2018-339
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 15 Jan 2019

Model description paper | 15 Jan 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

The Parcels v2.0 Lagrangian framework: new field interpolation schemes

Philippe Delandmeter and Erik van Sebille Philippe Delandmeter and Erik van Sebille
  • Utrecht University, Institute for Marine and Atmospheric Research, Princetonplein 5, 3584 CC Utrecht, the Netherlands

Abstract. With the increasing amount of data produced by numerical ocean models, so increases the need for efficient tools to analyse these data. One of these tools is Lagrangian ocean analysis, where a set of virtual particles are released and their dynamics is integrated in time based on fields defining the ocean state, including the hydrodynamics and biogeochemistry if available. This popular methodology needs to adapt to the large variety of models producing these fields at different formats.

This is precisely the aim of Parcels, a Lagrangian ocean analysis framework designed to combine (1) a wide flexibility to model particles of different natures and (2) an efficient implementation in accordance with modern computing infrastructure. In the new Parcels v2.0, we implement a set of interpolation schemes to read various types of discretised fields, from rectilinear to curvilinear grids in the horizontal direction, from z- to s- levels in the vertical and different variable distributions such as the Arakawa's A-, B- and C- grids. In particular, we develop a new interpolation scheme for a three-dimensional curvilinear C-grid and analyse its properties.

Parcels v2.0 capabilities, including a suite of meta-field objects, are then illustrated in a brief study of the distribution of floating microplastic in the North West European continental shelf and its sensitivity to different physical processes.

Philippe Delandmeter and Erik van Sebille
Interactive discussion
Status: open (until 12 Mar 2019)
Status: open (until 12 Mar 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Philippe Delandmeter and Erik van Sebille
Model code and software

Parcels v2.0.0beta E. van Sebille, P. Delandmeter, M. Lange, W. Rath, J. S. Phillips, J. Kronborg, D. Wichmann, R. Edwards, M. Sterl, S. Walbridge, I. Glissenaar, G. Vettoretti, and D. A. Ham https://doi.org/10.5281/zenodo.2422179

Simple interpolation code P. Delandmeter https://doi.org/10.5281/zenodo.2477418

Simulations of North Sea Plastic P. Delandmeter https://doi.org/10.5281/zenodo.2525279

Philippe Delandmeter and Erik van Sebille
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Latest update: 21 Feb 2019
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Short summary
Parcels is a framework to compute how ocean currents transport stuff such as plankton and plastic around. In the latest version 2.0 of Parcels, we focus on more accurate interpolation schemes and implement methods to seamlessly combine data from different sources (such as winds and currents, possibly in different regions). We show that this framework is very efficient to track how microplastic is transported through the North Sea into the Arctic.
Parcels is a framework to compute how ocean currents transport stuff such as plankton and...
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