The Institute of Marine Sciences (ISMAR) of the National Research Council of Italy (CNR) is the largest research organization in Italy. CNR aims to promote, transfer, and improve knowledge in the main sectors of scientific, technological, economic, and social research activities. Marine disciplines, including physics, geology, chemistry, biology, fisheries, aquaculture, remote sensing, and operational oceanography, are investigated with a multidisciplinary approach. CNR–ISMAR Roma carries out advanced research and technological activities in marine and environmental sciences at national and international levels. The site hosts scientific and technical expertise and contributes to national, European, and international research infrastructures, providing services and support to the marine science community. For JERICO, the CNR–ISMAR Roma is involved in several Mission Advisory Groups for the definition and design of both Copernicus and Earth Explorer future missions. Related research activities cover a wide range of scientific applications and operational frameworks, including the study of oceanic physical processes (from ocean general circulation to meso/submesoscale dynamics, to air-sea interactions, at global, Mediterranean, and coastal scales), physical–biological interactions, biogeochemical cycles, monitoring of the marine environment and climate, risk assessment, and monitoring. The unit manages facilities acquired during the ITINERIS project and strictly connected to the JERICO Research Infrastructure, such as the new generation of Biogeochemical-SVP Lagrangian drifters (BGC-SVP). These drifters simultaneously collect biological and relevant physical and environmental variables at high spatio-temporal resolution, in a frame of reference moving with the plankton itself. CNR–ISMAR Roma automatically acquires raw data from these facilities, performs checks, pre-processing, processing, quality control, and distributes data with corresponding metadata in internationally recognized standards and formats. When possible, additional products are generated using recognized standards and formats. In the context of EUROFLEETS the CNR–ISMAR Roma is responsible for the following installations: Above-water Hyperspectral Radiometer System (So-Rad) installed on R/V Gaia Blu. The subsystem manages radiometric acquisition protocols, automatic motorised pointing and alignment, spectral QA/QC, and preparation of Level-1 and Level-2 radiometric products. It supports continuous acquisition of water-leaving radiance, sky radiance and irradiance, metadata preparation, integration with the ship network, and near-real-time data transmission to processing platforms and the Marine Data Store. Inherent Optical Properties (IOPs) subsystem installed on R/V Gaia Blu. It handles the acquisition of spectral absorption and attenuation (AC-S), optical backscatter, chlorophyll fluorescence, and CDOM (ECO Triplet). The unit prepares and maintains acquisition protocols, filtration procedures, calibration routines, and integration with navigation and thermosalinograph data. It supports data pre-processing, quality control, metadata preparation, and generation of ingestion-ready products for the Marine Data Store. For ACTRIS (the Aerosol, Clouds and Trace Gases Research Infrastructure), CNR–ISMAR Rome is involved in the management of the candidate National Facility (NF) Atmospheric Rome Joint Supersite (ARTE) and its Aerosol Remote Sensing (ARS) component, located in Rome. Related research activities cover a wide range of scientific applications and operational frameworks, including the characterization of atmospheric aerosols and water vapor, combined with the study of ocean optical properties. This multi-domain approach helps to achieve a more comprehensive understanding of physical and biogeochemical processes at the air–sea interface, whose role in climate regulation is still poorly understood. The unit manages facilities acquired during the ITINERIS project that are closely connected to ACTRIS, such as the innovative 3D Scanning Raman Depolarization Fluorescence LIDAR. This system is designed to combine atmospheric and ocean surface measurements. It supports the investigation of marine aerosols and physicochemical processes at the air–sea interface, as well as marine aerosol monitoring and integration with both atmospheric and oceanographic products from other instrumentation onboard the R/V Gaia Blu. Within ACTRIS, CNR–ISMAR Rome provides scientific and technical expertise in the development, operation, and application of active optical remote sensing systems, including atmospheric and marine LIDAR technologies. The unit is responsible of the following installation: - Atmospheric–marine LIDAR subsystem installed on the R/V Gaia Blu. It manages raw signal acquisition, Raman and depolarization channels, inversion routines, calibration procedures, and the scheduling of measurement sequences. The subsystem supports pre-processing, automatic NetCDF generation, metadata preparation, QA/QC procedures, and FTP-based semi-real-time data delivery to the Marine Data Store. It also enables remote control, system monitoring, and integration with the shipboard network infrastructure.