Time-series data of physical oceanography and ocean current velocities were obtained from mooring F2-21 in the Fram Strait from July 2022 to July 2024 as part of the Helmholtz infrastructure program Frontiers in Arctic Marine Monitoring (FRAM) legacy and the West Spitsbergen Current array long-term monitoring. The mooring was deployed during RV Polarstern expedition PS131 (ATWAICE) and recovered during PS143/2 (FRAM/Hausgarten). The attached archive contains raw data files of four Seabird SBE37 MicroCATs (nominal depths: 22m, 46m, 260m, 766m; sampling interval 10min/1h), nine Seabird SBE56 temperature loggers (nominal depths: 31m, 77m, 108m, 158m, 207m, 310m, 359m, 410m, 460m; sampling interval 30s), one upward-looking RDI 150kHz Quartermaster ADCP (nominal depth: 257m; sampling interval 1h), and one Nortek Aquadopp single-point current meter (nominal depth: 765m; sampling interval 20min). Auxiliary information, such as sensor calibration sheets, mooring diagrams, and schedule files, is also provided, if applicable.

The file F2-21.zip contains all available sensor raw data from the mooring F2-21. The structure of the unzipped folders is mooring->sensor/sampler type->serial number->instrument files. All instruments were synchronized to UTC before deployment, and the offset after the recovery is supplied in the respective instrument folder, if available. The archive also contains the sensor calibration sheets/files and relevant sampler schedule files, if available. Finally, mooring schematics are also attached as PDFs in the root folder.The authors are grateful to the captains, crews, and technical/scientific staff of the expeditions PS131 and PS143/2 onboard RV Polarstern. Many individuals have contributed to the conception of the research, the preparation of the instruments, the deployments and recoveries, and the retrieval of the data, which we greatly appreciate. We acknowledge support from the Helmholtz infrastructure program "Frontiers in Arctic Marine Monitoring", and the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung.