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| Format: | Recurso digital |
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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19378255 |
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Table of Contents:
- <p>This dataset contains the maximum and 99th percentile wind speeds at 10 m height extracted within extratropical cyclones in the South Atlantic. The data are derived from the ERA5 reanalysis (1979–2020) using a Lagrangian reference frame centered on the cyclone core.</p> <p>The files are organized by year and variable type: <code>*_wind10_max.csv</code>: absolute maximum wind speeds at 10 m (m/s) and their relative location. <code>*_wind10_p99.csv</code>: 99th percentile wind speed at 10 m.</p> <p>Each file contains the following columns for each quadrant (NW, NE, SW, SE): relative coordinates (Δlon, Δlat), the extreme value (m/s), the distance to the center (degrees), and the timestamp. The columns <code>mx_mx_max</code> and <code>mx_mx_p99</code> contain the maximum value across all quadrants.</p> <p>Data were generated from the South Atlantic cyclone track database (Gramcianinov et al., 2019), enhanced with phase classification using CycloPhaser (de Souza et al., 2025). ERA5 hourly wind fields at 10 m (Hersbach et al., 2020) were used. For each cyclone, a 20°×20° Lagrangian domain centered on its core was defined, and fields were extracted at all timesteps during the cyclone's life cycle. Absolute maxima and 99th percentiles were then calculated within a circular mask of 9.5° radius, after applying Gaussian smoothing (σ=0.25).</p>