2023 Overturning in the Subpolar North Atlantic Program (OSNAP) Technical Report: Calculation Method Summary

• Main Authors: Fu, Yao, Li, Feili, Johns, William E., Lozier, M. Susan
• Format: Report
• Language: English
• Published: Georgia Institute of Technology 2023
• Subjects: Ocean observation; OSNAP calculation method; OSNAP technical report; Overturning in the Subpolar North Atlantic Program (OSNAP); Greenland; North Atlantic
• Online Access: https://hdl.handle.net/1853/72190; https://doi.org/10.35090/gatech/72190

In this technical report, we synthesize the OSNAP MOC metrics calculation methods that have been documented in a series of OSNAP publications. The Overturning in the Subpolar North Atlantic Program (OSNAP) observing system utilizes data from a suite of moorings, gliders, Argo floats, and satellite altimetry to estimate the subpolar Atlantic Meridional Overturning Circulation (MOC). The OSNAP section consists of two parts: OSNAP West extends from southern Labrador to southwestern Greenland and OSNAP East from southeastern Greenland to the coast of Scotland (Fig. 1). Since 2014 OSNAP array have been continuously monitoring the MOC, as well as the meridional heat (MHT) and freshwater (MFT) transports in the subpolar North Atlantic. Currently, the OSNAP record is 71 months (August 2014 to June 2020). Results have been published and the data is freely available at https://www.o-snap.org/data-access/. In this technical report, we synthesize the OSNAP MOC metrics calculation methods that have been documented in a series of OSNAP publications. National Science Foundation