In recent years, multiple estimates of the global air–sea CO₂ flux emerged from upscaling shipboard pCO₂ measurements. They are however limited to the open-ocean domain and do not consider the coastal ocean, i.e. a significant marine sink for CO₂. We build towards an integrated pCO₂ product that combines both the open-ocean and coastal-ocean domain and focus on the evaluation of the common overlap area of these products and how well the aquatic continuum is represented in the new climatology.