The presence of rich flow structures in the atmosphere and ocean down to the scales of atmospheric convection O (100 m - 10 km) has sparked renewed interest across atmospheric and ocean scientists in recent years. How does this diverse wind structure influence the exchange of energy and momentum through the air-sea interface, and impact weather and climate? Marine cumulus clouds, especially during rain, are one of the drivers of large wind variability and leave a clear imprint on ocean surface roughness seen in high-resolution Synthetic Aperture Radar (SAR) imagery.