Preprints
https://doi.org/10.5194/gmd-2023-45
https://doi.org/10.5194/gmd-2023-45
Submitted as: model description paper
 | 
22 May 2023
Submitted as: model description paper |  | 22 May 2023
Status: a revised version of this preprint is currently under review for the journal GMD.

Intercomparisons of five ocean particle tracking software packages

Jilian Xiong and Parker MacCready

Abstract. Particle tracking is widely utilized to study transport features in a range of physical, chemical, and biological processes in oceanography. In this study, a new offline particle tracking package, Tracker, is introduced and its performance is evaluated in comparison to an online Eulerian dye, one online and three offline particle tracking software packages in a small high-resolution (200 m) model domain and a large coarser (1000 m) model domain. It was found that both particle and dye approaches give similar results across different model resolutions and domains when they were tracking the same water mass, as indicated by similar mean advection pathways and spatial distributions of dye and particles. The flexibility of offline particle tracking and its similarity against online dye and particle tracking make it a useful tool to complement existing ocean circulation models. Lastly, the new Tracker was shown to be a reliable particle tracking package to complement the Regional Ocean Modeling System (ROMS), and tradeoffs of performance, modifiability, and ease of use that can influence the choice of which package to use are discussed.

Jilian Xiong and Parker MacCready

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2023-45', Anonymous Referee #1, 18 Jun 2023
    • AC3: 'Reply on RC1', Jilian Xiong, 11 Sep 2023
  • CEC1: 'Comment on gmd-2023-45', Juan Antonio Añel, 19 Jun 2023
    • AC1: 'Reply on CEC1', Jilian Xiong, 26 Jun 2023
      • CEC2: 'Reply on AC1', Juan Antonio Añel, 27 Jun 2023
        • AC2: 'Reply on CEC2', Jilian Xiong, 04 Jul 2023
          • CEC3: 'Reply on AC2', Juan Antonio Añel, 10 Jul 2023
  • RC2: 'Comment on gmd-2023-45', Tor Nordam, 20 Jun 2023
    • AC4: 'Reply on RC2', Jilian Xiong, 11 Sep 2023

Jilian Xiong and Parker MacCready

Jilian Xiong and Parker MacCready

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Short summary
A new offline particle tracking model, Tracker, was introduced to work with the Regional Ocean Modeling System (ROMS). Its performance was compared with four other particle tracking models and passive dye, which span a representative range of tracking algorithms. All tracking models perform similarly, especially for the first day. The comparison of multiple tracking codes in the same circulation model establishes confidence in all, and allows comparison of performance and ease of use.