Over the last year, the LASE-NOPAH Transnational Access (TA) took place, following a RECETOX, Masaryk University (Czech Rep.) TA application. The aim of this TA was to study the diffusive air-sea exchange of organic pollutants such as nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs, OPAHs) in the surface waters of the Mediterranean. It was hosted at the HCMR POSEIDON E1-M3A and HCB buoys in order to benefit respectively from an off-shore station and a coastal station located in the Mediterranean Sea (Greece). The buoys form part of the JERICO-S3 Cretan Sea Pilot Supersite. Air passive sampler (bell shape) placed on the main mast of the buoy. In the framework of the project,…