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| Main Authors: | , |
|---|---|
| Format: | Recurso digital |
| Language: | English |
| Published: |
Zenodo
2025
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.14643997 |
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Table of Contents:
- <p><strong>Version 2.0 of NEMO-Sarg Sargassum transport-physiology model based on the NEMOv4.0.1 ocean platform.</strong><br><br>Model description and performances are detailed in the following manuscript : </p> <p><em>Jouanno, J., S. Berthet, Muller-Karger, Aumont et Sheinbaum (2025). An extreme North Atlantic Oscillation event drove the pelagic Sargassum tipping point. Communications Earth and Environment. </em></p> <p>The reference research configuration used in Jouanno et al. (2025) is SARG025-INTER25.</p> <p>Model ouputs from different interannual experiments analysed in Jouanno et al. (2025) are also provided :</p> <p><strong>EXP0</strong> : <strong>Reference interannual run.</strong> <br><strong>EXP1 </strong>: <strong>No interannual variability of surface currents</strong>. This is a simulation forced with high-pass filtered surface currents and a cut-off period of 90 days. The seasonal cycle was previously filtered with a Lanczos harmonic analysis and then added to the filtered time series to conserve the seasonal cycle of the currents. It is worth noting that in this simulation the winds, and so on the windage, are kept interannual.<br><strong>EXP2 :</strong> <strong>No interannual variability of nutrients</strong>. is forced with climatological biogeochemical fields representative of the 2000s, obtained by averaging the results of the 1/4° NEMO-PISCES simulation over the period 2000-2009,<br><strong>EXP3 : No interannual variability of SST.</strong> This is a simulation forced with a Lanczos high-pass filtered SST and a cut-off period of 90 days. The seasonal cycle was previously filtered with a Lanczos harmonic analysis and then added to the filtered time series to conserve the seasonal cycle of SST. <br><strong>EXP4 : No Amazon plume</strong>. This is a simulation forced with no nutrients in the Amazon plume area. The Amazon plume area is delimitated at each time step by sea surface salinities below 35 in the region 60°W-30°W and 0°-20°N.<br><strong>EXP5 :No upwelling.</strong> This is a simulation forced with no nutrients in Senegal-Mauritania upwelling. The is achieved by setting the nutrient concentrations at zero in the area between 20°W and the West Africa coast and between 10°N and 30°N.</p>