Fig. 4
From: Volcanic hazard assessment for tephra fallout in Martinique
Compass roses representing the 41-year wind database from the European Centre for Medium-Range Weather Forecasts ERA5 reanalysis (Hersbach et al. 2019) for a, c, e, the winter season and b, d, f, the rainy season. Horizontal wind vectors (speed and azimuth) are reported at different intervals of height: 0 to 7 km (a and b), 7 to 17 km (c and d), and 17 to 50 km (e and f). The wind speed is discretized into several layers, from 0 ms−1 at the center of the rose to the maximum value of each dataset at the rose boundary