• Errata
  • Corrected mean calculation for metrics in Solutions* Files
    • Issue
    • Fix
    • Impact
      • EGU25 Virtual Poster
        • Table 1
      • MTEC-ICMAS 2024 conference paper
        • Table 1
        • Figure 6
          • Distribution of changes Figure 6a
          • Distribution of changes Figure 6b
      • VISIR-2 peer-reviewed paper
        • Figure 12a
          • Distribution of changes
        • Figure 14a
          • Distribution of changes

Errata

All bug fixes and relative affected products can be found in this section.

Corrected mean calculation for metrics in Solutions* Files

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Issue

Previously, the computation of average metrics across voyage plans in the Solutions* files was performed using arithmetic means. This approach treated each edge equally, regardless of how long the vessel sailed on it, potentially leading to inaccurate representations of voyage-wide performance.

Fix

We have updated the metric aggregation logic to use weighted means, where each edge’s contribution is weighted by its sailing time. This change ensures that longer segments of the voyage have proportionally greater influence on the computed average metrics, leading to more accurate and meaningful results.

Impact

This fix improves the consistency and accuracy of reported metrics. As a result, some metrics reported in prior analyses may differ from those computed under the corrected method. Integral metrics of the marine voyage (length, duration, total CO₂ emissions) are not impacted.

A detailed review and description of the impact of this fix on all previously published results and analyses will follow. From now on we will refer as Aritmetic mean the output produced up to v5 and Weighted mean the one produced using v6.

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EGU25 Virtual Poster

M.L. Salinas, G. Mannarini, Voyage Optimization with the VISIR-2 Model on the Shanghai-Los Angeles Green Corridor of shipping. EGU-2025 (Wien). DOI: https://doi.org/10.13140/RG.2.2.33136.16643, 2025

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Table 1

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MTEC-ICMAS 2024 conference paper

Mannarini, G., Salinas: A ferry route in the Skagerrak optimised via VISIR-2, Journal of Physics: Conference Series, (2867) 012003, https://doi.org//10.1088/1742-6596/2867/1/012003 , 2024.

Note: Figure 6b in manuscript is wrong. It should refer to NO-DK cuwa routes but is DK-NO wa instead. Here we show the comaprison with the fixed version.

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Table 1

Figure 6

Distribution of changes Figure 6a

Distribution of changes Figure 6b

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VISIR-2 peer-reviewed paper

Mannarini, G., Salinas, M. L., Carelli, L., Petacco, N., and Orović, J.: VISIR-2: ship weather routing in Python, Geosci. Model Dev., https://doi.org//10.5194/gmd-17-4355-2024 , 2024.

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Figure 12a

Distribution of changes

Figure 14a

Distribution of changes