Dissolved organic carbon, and chromophoric and fluorescent DOM measurements of sea surface microlayer and subsurface samples from the R/V Hugh R. Sharp cruises HRS2213, HRS2215 and HRS2407 in the Northwestern Atlantic Ocean in 2022 and 2024

Data includes dissolved organic carbon, as well as chromophoric and fluorescent dissolved organic matter (DOM) concentrations, of sea surface microlayer (SML) and subsurface samples collected across four hydrographic regions in the western North Atlantic. Sample information, including date and time, location (longitude and latitude), and oceanographic measurements such as salinity, temperature, wind speed, and humidity at the time of collection, is provided. SML samples were collected with a modified glass plate sampler, the Rosette-Based Glass Plate (RGP) Sampler, while subsurface samples were collected from a depth of 0.5 m using a pump. These data were generated as part of the Surfactants at the Ocean-Atmosphere Physical Interface (SOAPI) project to investigate the the composition, structure, and interfacial properties of surfactant organics at the sea surface. Data were collected by Dr. Andrew Wozniak (University of Delaware).