SUMOS ModSpray23

In the context of the SUMOS research cruise (2021) where sea spray concentrations were measured in February and March 2021 in the Bay of Biscay, the present dataset gathers numerical simulations of sea spray transport achieved with the MesoNH model. This dataset gathers MesoNH model outputs every hour over a 600x600km grid (300x300 cells) centered over the Bay of Biscay. The model was forced using the ECMWF model every three hours. Three sea spray generation functions are used to parameterize the sea spray generation flux: OVA14 (Ovadnevaite et al. 2014), B21A and B21B (Bruch et al. 2021). Modeled number concentrations are extracted at 2 µm radius for OVA14, and 2, 5, 10 and 20 µm for both B21A and B21B. The database presents these concentrations along a horizontal cross-section across the entire domain at 15 meters above mean sea level. This data is presented as 3D matrices structure as follows : Time x Longitude x Latitude. The database also provides the number concentration distribution as a function of particle radius (n(r)) at the location nearest to the Atalante vessel. Both horizontal wind speed components U and V are provided over the entire grid, as well as the horizontal wind speed sqrt(U²+V²) at the location nearest to the Atalante vessel. Units : Wind speed (m/s), number concentrations (#/cm3), Longitude and Latitude (Degrees). More information about the dataset can be found in the publication by (Bruch et al. 2023 – JGR – Atmosphere).