Technical Report

OSNAP data products will match those of the RAPID/MOCHA program, namely, time series of the depth and zonally-integrated volume, heat and freshwater fluxes. The ability of the observational data to accurately estimate these products has been tested in a series of Observing System Simulation Experiments (OSSEs) that, along with the calculation methodology, are detailed in the OSNAP technical reports.  The reader is also referred to the following publications for details on the OSNAP calculation methods. 


[1] 2016 OSNAP technical report:  version.07.2016

[2] Li, F., M.S. Lozier, and W.E. Johns2017Calculating the Meridional Volume, Heat, and Freshwater Transports from an Observing System in the Subpolar North Atlantic: Observing System Simulation Experiment. J. Atmos. Oceanic Technol., 341483–1500, doi: 10.1175/JTECH-D-16-0247.1 

[3] Lozier, M. S., et al. (2019): A sea change in our view of overturning in the subpolar North Atlantic. Science, 363, 516-521, doi: 10.1126/science.aau6592.

[4] Li, F., et al. (2021): Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation, Nature Communications, 12, 1-9. doi: 10.1038/s41467-022-28397-3.

[5] Fu, Y. et al. (2023): Seasonality of the Meridional Overturning Circulation in the subpolar North Atlantic. Communications Earth and Environment 4, 181.

[6] 2023 OSNAP technical report: Calculation method summary